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@@ -74,7 +74,7 @@ pre > code.sourceCode > span > a:first-child::before { text-decoration: underlin
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<link href="../site_libs/quarto-html/quarto-syntax-highlighting-dark-2fef5ea3f8957b3e4ecc936fc74692ca.css" rel="stylesheet" id="quarto-text-highlighting-styles">
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<script src="../site_libs/bootstrap/bootstrap.min.js"></script>
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<link href="../site_libs/bootstrap/bootstrap-icons.css" rel="stylesheet">
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<link href="../site_libs/bootstrap/bootstrap-ed9d63b928ec3538d7b05c99c63ac09f.min.css" rel="stylesheet" append-hash="true" id="quarto-bootstrap" data-mode="dark">
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<link href="../site_libs/bootstrap/bootstrap-4286dd70669dc30dbb11cd1e43bae81e.min.css" rel="stylesheet" append-hash="true" id="quarto-bootstrap" data-mode="dark">
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<script id="quarto-search-options" type="application/json">{
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"location": "navbar",
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"copy-button": false,
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@@ -474,9 +474,10 @@ gtag('config', 'G-9KYCVJBNMQ', { 'anonymize_ip': true});
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<li><a href="#sec-deepspeed-usage" id="toc-sec-deepspeed-usage" class="nav-link" data-scroll-target="#sec-deepspeed-usage"><span class="header-section-number">2.2</span> Usage</a></li>
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<li><a href="#sec-zero-stages" id="toc-sec-zero-stages" class="nav-link" data-scroll-target="#sec-zero-stages"><span class="header-section-number">2.3</span> ZeRO Stages</a></li>
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</ul></li>
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<li><a href="#sec-fsdp" id="toc-sec-fsdp" class="nav-link" data-scroll-target="#sec-fsdp"><span class="header-section-number">3</span> FSDP</a>
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<li><a href="#sec-fsdp" id="toc-sec-fsdp" class="nav-link" data-scroll-target="#sec-fsdp"><span class="header-section-number">3</span> Fully Sharded Data Parallel (FSDP)</a>
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<ul class="collapse">
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<li><a href="#sec-fsdp-config" id="toc-sec-fsdp-config" class="nav-link" data-scroll-target="#sec-fsdp-config"><span class="header-section-number">3.1</span> Basic FSDP Configuration</a></li>
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<li><a href="#sec-migrate-fsdp1-fsdp2" id="toc-sec-migrate-fsdp1-fsdp2" class="nav-link" data-scroll-target="#sec-migrate-fsdp1-fsdp2"><span class="header-section-number">3.1</span> Migrating from FSDP1 to FSDP2</a></li>
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<li><a href="#sec-fsdp-config" id="toc-sec-fsdp-config" class="nav-link" data-scroll-target="#sec-fsdp-config"><span class="header-section-number">3.2</span> FSDP1 (deprecated)</a></li>
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</ul></li>
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<li><a href="#sec-sequence-parallelism" id="toc-sec-sequence-parallelism" class="nav-link" data-scroll-target="#sec-sequence-parallelism"><span class="header-section-number">4</span> Sequence parallelism</a>
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<ul class="collapse">
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@@ -529,7 +530,6 @@ gtag('config', 'G-9KYCVJBNMQ', { 'anonymize_ip': true});
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</section>
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<section id="sec-deepspeed" class="level2" data-number="2">
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<h2 data-number="2" class="anchored" data-anchor-id="sec-deepspeed"><span class="header-section-number">2</span> DeepSpeed</h2>
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<p>DeepSpeed is the recommended approach for multi-GPU training due to its stability and performance. It provides various optimization levels through ZeRO stages.</p>
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<section id="sec-deepspeed-config" class="level3" data-number="2.1">
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<h3 data-number="2.1" class="anchored" data-anchor-id="sec-deepspeed-config"><span class="header-section-number">2.1</span> Configuration</h3>
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<p>Add to your YAML config:</p>
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@@ -590,16 +590,110 @@ Tip
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</section>
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</section>
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<section id="sec-fsdp" class="level2" data-number="3">
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<h2 data-number="3" class="anchored" data-anchor-id="sec-fsdp"><span class="header-section-number">3</span> FSDP</h2>
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<section id="sec-fsdp-config" class="level3" data-number="3.1">
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<h3 data-number="3.1" class="anchored" data-anchor-id="sec-fsdp-config"><span class="header-section-number">3.1</span> Basic FSDP Configuration</h3>
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<div class="sourceCode" id="cb3"><pre class="sourceCode yaml code-with-copy"><code class="sourceCode yaml"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp</span><span class="kw">:</span></span>
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<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> full_shard</span></span>
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<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> auto_wrap</span></span>
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<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_config</span><span class="kw">:</span></span>
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<span id="cb3-5"><a href="#cb3-5" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_offload_params</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
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<span id="cb3-6"><a href="#cb3-6" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_state_dict_type</span><span class="kw">:</span><span class="at"> FULL_STATE_DICT</span></span>
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<span id="cb3-7"><a href="#cb3-7" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_transformer_layer_cls_to_wrap</span><span class="kw">:</span><span class="at"> LlamaDecoderLayer</span></span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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<h2 data-number="3" class="anchored" data-anchor-id="sec-fsdp"><span class="header-section-number">3</span> Fully Sharded Data Parallel (FSDP)</h2>
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<div class="callout callout-style-default callout-note callout-titled">
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<div class="callout-header d-flex align-content-center">
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<div class="callout-icon-container">
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<i class="callout-icon"></i>
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||||
</div>
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<div class="callout-title-container flex-fill">
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Note
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</div>
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</div>
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<div class="callout-body-container callout-body">
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<p>FSDP2 is recommended for new users. FSDP1 is deprecated and will be removed in an upcoming release of Axolotl.</p>
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</div>
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</div>
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<section id="sec-migrate-fsdp1-fsdp2" class="level3" data-number="3.1">
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<h3 data-number="3.1" class="anchored" data-anchor-id="sec-migrate-fsdp1-fsdp2"><span class="header-section-number">3.1</span> Migrating from FSDP1 to FSDP2</h3>
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||||
<p>To migrate your config from FSDP1 to FSDP2, you must use the <code>fsdp_version</code> top-level config field to specify the FSDP version, and
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also follow the config field mapping below to update field names.</p>
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<section id="config-mapping" class="level4" data-number="3.1.1">
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<h4 data-number="3.1.1" class="anchored" data-anchor-id="config-mapping"><span class="header-section-number">3.1.1</span> Config mapping</h4>
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<table class="caption-top table">
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<thead>
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<tr class="header">
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<th>FSDP1</th>
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<th>FSDP2</th>
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</tr>
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</thead>
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<tbody>
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<tr class="odd">
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<td>fsdp_sharding_strategy</td>
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<td>reshard_after_forward</td>
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</tr>
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<tr class="even">
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<td>fsdp_backward_prefetch_policy</td>
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<td><strong>REMOVED</strong></td>
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||||
</tr>
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||||
<tr class="odd">
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||||
<td>fsdp_backward_prefetch</td>
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<td><strong>REMOVED</strong></td>
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||||
</tr>
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||||
<tr class="even">
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||||
<td>fsdp_forward_prefetch</td>
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||||
<td><strong>REMOVED</strong></td>
|
||||
</tr>
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||||
<tr class="odd">
|
||||
<td>fsdp_sync_module_states</td>
|
||||
<td><strong>REMOVED</strong></td>
|
||||
</tr>
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||||
<tr class="even">
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||||
<td>fsdp_cpu_ram_efficient_loading</td>
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||||
<td>cpu_ram_efficient_loading</td>
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||||
</tr>
|
||||
<tr class="odd">
|
||||
<td>fsdp_state_dict_type</td>
|
||||
<td>state_dict_type</td>
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||||
</tr>
|
||||
<tr class="even">
|
||||
<td>fsdp_use_orig_params</td>
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||||
<td><strong>REMOVED</strong></td>
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||||
</tr>
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||||
</tbody>
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||||
</table>
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||||
<p>For example, if you were using the following FSDP1 config:</p>
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||||
<div class="sourceCode" id="cb3"><pre class="sourceCode yaml code-with-copy"><code class="sourceCode yaml"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_version</span><span class="kw">:</span><span class="at"> </span><span class="dv">1</span></span>
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<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_config</span><span class="kw">:</span></span>
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<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_offload_params</span><span class="kw">:</span><span class="at"> </span><span class="ch">false</span></span>
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||||
<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_cpu_ram_efficient_loading</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
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||||
<span id="cb3-5"><a href="#cb3-5" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_auto_wrap_policy</span><span class="kw">:</span><span class="at"> TRANSFORMER_BASED_WRAP</span></span>
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||||
<span id="cb3-6"><a href="#cb3-6" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_transformer_layer_cls_to_wrap</span><span class="kw">:</span><span class="at"> Qwen3DecoderLayer</span></span>
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||||
<span id="cb3-7"><a href="#cb3-7" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_state_dict_type</span><span class="kw">:</span><span class="at"> FULL_STATE_DICT</span></span>
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||||
<span id="cb3-8"><a href="#cb3-8" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_sharding_strategy</span><span class="kw">:</span><span class="at"> FULL_SHARD</span></span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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||||
<p>You can migrate to the following FSDP2 config:</p>
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||||
<div class="sourceCode" id="cb4"><pre class="sourceCode yaml code-with-copy"><code class="sourceCode yaml"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_version</span><span class="kw">:</span><span class="at"> </span><span class="dv">2</span></span>
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||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_config</span><span class="kw">:</span></span>
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||||
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">offload_params</span><span class="kw">:</span><span class="at"> </span><span class="ch">false</span></span>
|
||||
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">cpu_ram_efficient_loading</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
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||||
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">auto_wrap_policy</span><span class="kw">:</span><span class="at"> TRANSFORMER_BASED_WRAP</span></span>
|
||||
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">transformer_layer_cls_to_wrap</span><span class="kw">:</span><span class="at"> Qwen3DecoderLayer</span></span>
|
||||
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">state_dict_type</span><span class="kw">:</span><span class="at"> FULL_STATE_DICT</span></span>
|
||||
<span id="cb4-8"><a href="#cb4-8" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">reshard_after_forward</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
|
||||
</section>
|
||||
</section>
|
||||
<section id="sec-fsdp-config" class="level3" data-number="3.2">
|
||||
<h3 data-number="3.2" class="anchored" data-anchor-id="sec-fsdp-config"><span class="header-section-number">3.2</span> FSDP1 (deprecated)</h3>
|
||||
<div class="callout callout-style-default callout-note callout-titled">
|
||||
<div class="callout-header d-flex align-content-center">
|
||||
<div class="callout-icon-container">
|
||||
<i class="callout-icon"></i>
|
||||
</div>
|
||||
<div class="callout-title-container flex-fill">
|
||||
Note
|
||||
</div>
|
||||
</div>
|
||||
<div class="callout-body-container callout-body">
|
||||
<p>Using <code>fsdp</code> to configure FSDP is deprecated and will be removed in an upcoming release of Axolotl. Please use <code>fsdp_config</code> as above instead.</p>
|
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</div>
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</div>
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<div class="sourceCode" id="cb5"><pre class="sourceCode yaml code-with-copy"><code class="sourceCode yaml"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp</span><span class="kw">:</span></span>
|
||||
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> full_shard</span></span>
|
||||
<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> auto_wrap</span></span>
|
||||
<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_config</span><span class="kw">:</span></span>
|
||||
<span id="cb5-5"><a href="#cb5-5" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_offload_params</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
|
||||
<span id="cb5-6"><a href="#cb5-6" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_state_dict_type</span><span class="kw">:</span><span class="at"> FULL_STATE_DICT</span></span>
|
||||
<span id="cb5-7"><a href="#cb5-7" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_transformer_layer_cls_to_wrap</span><span class="kw">:</span><span class="at"> LlamaDecoderLayer</span></span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
|
||||
</section>
|
||||
</section>
|
||||
<section id="sec-sequence-parallelism" class="level2" data-number="4">
|
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@@ -1108,142 +1202,197 @@ single sequence causes OOM errors during model training.</p>
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}
|
||||
});
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</script><div class="modal fade" id="quarto-embedded-source-code-modal" tabindex="-1" aria-labelledby="quarto-embedded-source-code-modal-label" aria-hidden="true"><div class="modal-dialog modal-dialog-scrollable"><div class="modal-content"><div class="modal-header"><h5 class="modal-title" id="quarto-embedded-source-code-modal-label">Source Code</h5><button class="btn-close" data-bs-dismiss="modal"></button></div><div class="modal-body"><div class="">
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<div class="sourceCode" id="cb4" data-shortcodes="false"><pre class="sourceCode markdown code-with-copy"><code class="sourceCode markdown"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="co">---</span></span>
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||||
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a><span class="an">title:</span><span class="co"> "Multi-GPU"</span></span>
|
||||
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a><span class="an">format:</span></span>
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||||
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a><span class="co"> html:</span></span>
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||||
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a><span class="co"> toc: true</span></span>
|
||||
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a><span class="co"> toc-depth: 3</span></span>
|
||||
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a><span class="co"> number-sections: true</span></span>
|
||||
<span id="cb4-8"><a href="#cb4-8" aria-hidden="true" tabindex="-1"></a><span class="co"> code-tools: true</span></span>
|
||||
<span id="cb4-9"><a href="#cb4-9" aria-hidden="true" tabindex="-1"></a><span class="an">execute:</span></span>
|
||||
<span id="cb4-10"><a href="#cb4-10" aria-hidden="true" tabindex="-1"></a><span class="co"> enabled: false</span></span>
|
||||
<span id="cb4-11"><a href="#cb4-11" aria-hidden="true" tabindex="-1"></a><span class="co">---</span></span>
|
||||
<span id="cb4-12"><a href="#cb4-12" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-13"><a href="#cb4-13" aria-hidden="true" tabindex="-1"></a>This guide covers advanced training configurations for multi-GPU setups using Axolotl.</span>
|
||||
<span id="cb4-14"><a href="#cb4-14" aria-hidden="true" tabindex="-1"></a></span>
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||||
<span id="cb4-15"><a href="#cb4-15" aria-hidden="true" tabindex="-1"></a><span class="fu">## Overview {#sec-overview}</span></span>
|
||||
<span id="cb4-16"><a href="#cb4-16" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-17"><a href="#cb4-17" aria-hidden="true" tabindex="-1"></a>Axolotl supports several methods for multi-GPU training:</span>
|
||||
<span id="cb4-18"><a href="#cb4-18" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-19"><a href="#cb4-19" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>DeepSpeed (recommended)</span>
|
||||
<span id="cb4-20"><a href="#cb4-20" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>FSDP (Fully Sharded Data Parallel)</span>
|
||||
<span id="cb4-21"><a href="#cb4-21" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Sequence parallelism</span>
|
||||
<span id="cb4-22"><a href="#cb4-22" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>FSDP + QLoRA</span>
|
||||
<span id="cb4-23"><a href="#cb4-23" aria-hidden="true" tabindex="-1"></a></span>
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||||
<span id="cb4-24"><a href="#cb4-24" aria-hidden="true" tabindex="-1"></a><span class="fu">## DeepSpeed {#sec-deepspeed}</span></span>
|
||||
<span id="cb4-25"><a href="#cb4-25" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-26"><a href="#cb4-26" aria-hidden="true" tabindex="-1"></a>DeepSpeed is the recommended approach for multi-GPU training due to its stability and performance. It provides various optimization levels through ZeRO stages.</span>
|
||||
<span id="cb4-27"><a href="#cb4-27" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-28"><a href="#cb4-28" aria-hidden="true" tabindex="-1"></a><span class="fu">### Configuration {#sec-deepspeed-config}</span></span>
|
||||
<span id="cb4-29"><a href="#cb4-29" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-30"><a href="#cb4-30" aria-hidden="true" tabindex="-1"></a>Add to your YAML config:</span>
|
||||
<span id="cb4-31"><a href="#cb4-31" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-32"><a href="#cb4-32" aria-hidden="true" tabindex="-1"></a><span class="in">```{.yaml}</span></span>
|
||||
<span id="cb4-33"><a href="#cb4-33" aria-hidden="true" tabindex="-1"></a><span class="fu">deepspeed</span><span class="kw">:</span><span class="at"> deepspeed_configs/zero1.json</span></span>
|
||||
<span id="cb4-34"><a href="#cb4-34" aria-hidden="true" tabindex="-1"></a><span class="in">```</span></span>
|
||||
<span id="cb4-35"><a href="#cb4-35" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-36"><a href="#cb4-36" aria-hidden="true" tabindex="-1"></a><span class="fu">### Usage {#sec-deepspeed-usage}</span></span>
|
||||
<span id="cb4-37"><a href="#cb4-37" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-38"><a href="#cb4-38" aria-hidden="true" tabindex="-1"></a><span class="in">```{.bash}</span></span>
|
||||
<span id="cb4-39"><a href="#cb4-39" aria-hidden="true" tabindex="-1"></a><span class="co"># Fetch deepspeed configs (if not already present)</span></span>
|
||||
<span id="cb4-40"><a href="#cb4-40" aria-hidden="true" tabindex="-1"></a><span class="ex">axolotl</span> fetch deepspeed_configs</span>
|
||||
<span id="cb4-41"><a href="#cb4-41" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-42"><a href="#cb4-42" aria-hidden="true" tabindex="-1"></a><span class="co"># Passing arg via config</span></span>
|
||||
<span id="cb4-43"><a href="#cb4-43" aria-hidden="true" tabindex="-1"></a><span class="ex">axolotl</span> train config.yml</span>
|
||||
<span id="cb4-44"><a href="#cb4-44" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-45"><a href="#cb4-45" aria-hidden="true" tabindex="-1"></a><span class="co"># Passing arg via cli</span></span>
|
||||
<span id="cb4-46"><a href="#cb4-46" aria-hidden="true" tabindex="-1"></a><span class="ex">axolotl</span> train config.yml <span class="at">--deepspeed</span> deepspeed_configs/zero1.json</span>
|
||||
<span id="cb4-47"><a href="#cb4-47" aria-hidden="true" tabindex="-1"></a><span class="in">```</span></span>
|
||||
<span id="cb4-48"><a href="#cb4-48" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-49"><a href="#cb4-49" aria-hidden="true" tabindex="-1"></a><span class="fu">### ZeRO Stages {#sec-zero-stages}</span></span>
|
||||
<span id="cb4-50"><a href="#cb4-50" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-51"><a href="#cb4-51" aria-hidden="true" tabindex="-1"></a>We provide default configurations for:</span>
|
||||
<span id="cb4-52"><a href="#cb4-52" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-53"><a href="#cb4-53" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 1 (<span class="in">`zero1.json`</span>)</span>
|
||||
<span id="cb4-54"><a href="#cb4-54" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 1 with torch compile (<span class="in">`zero1_torch_compile.json`</span>)</span>
|
||||
<span id="cb4-55"><a href="#cb4-55" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 2 (<span class="in">`zero2.json`</span>)</span>
|
||||
<span id="cb4-56"><a href="#cb4-56" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 3 (<span class="in">`zero3.json`</span>)</span>
|
||||
<span id="cb4-57"><a href="#cb4-57" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 3 with bf16 (<span class="in">`zero3_bf16.json`</span>)</span>
|
||||
<span id="cb4-58"><a href="#cb4-58" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 3 with bf16 and CPU offload params(<span class="in">`zero3_bf16_cpuoffload_params.json`</span>)</span>
|
||||
<span id="cb4-59"><a href="#cb4-59" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 3 with bf16 and CPU offload params and optimizer (<span class="in">`zero3_bf16_cpuoffload_all.json`</span>)</span>
|
||||
<span id="cb4-60"><a href="#cb4-60" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-61"><a href="#cb4-61" aria-hidden="true" tabindex="-1"></a>::: {.callout-tip}</span>
|
||||
<span id="cb4-62"><a href="#cb4-62" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-63"><a href="#cb4-63" aria-hidden="true" tabindex="-1"></a>Choose the configuration that offloads the least amount to memory while still being able to fit on VRAM for best performance.</span>
|
||||
<span id="cb4-64"><a href="#cb4-64" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-65"><a href="#cb4-65" aria-hidden="true" tabindex="-1"></a>Start from Stage 1 -> Stage 2 -> Stage 3.</span>
|
||||
<span id="cb4-66"><a href="#cb4-66" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-67"><a href="#cb4-67" aria-hidden="true" tabindex="-1"></a>:::</span>
|
||||
<span id="cb4-68"><a href="#cb4-68" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-69"><a href="#cb4-69" aria-hidden="true" tabindex="-1"></a>::: {.callout-tip}</span>
|
||||
<span id="cb4-70"><a href="#cb4-70" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-71"><a href="#cb4-71" aria-hidden="true" tabindex="-1"></a>Using ZeRO Stage 3 with Single-GPU training</span>
|
||||
<span id="cb4-72"><a href="#cb4-72" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-73"><a href="#cb4-73" aria-hidden="true" tabindex="-1"></a>ZeRO Stage 3 can be used for training on a single GPU by manually setting the environment variables:</span>
|
||||
<span id="cb4-74"><a href="#cb4-74" aria-hidden="true" tabindex="-1"></a><span class="in">`WORLD_SIZE=1 LOCAL_RANK=0 MASTER_ADDR=0.0.0.0 MASTER_PORT=29500`</span></span>
|
||||
<span id="cb4-75"><a href="#cb4-75" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-76"><a href="#cb4-76" aria-hidden="true" tabindex="-1"></a>:::</span>
|
||||
<span id="cb4-77"><a href="#cb4-77" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-78"><a href="#cb4-78" aria-hidden="true" tabindex="-1"></a><span class="fu">## FSDP {#sec-fsdp}</span></span>
|
||||
<span id="cb4-79"><a href="#cb4-79" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-80"><a href="#cb4-80" aria-hidden="true" tabindex="-1"></a><span class="fu">### Basic FSDP Configuration {#sec-fsdp-config}</span></span>
|
||||
<span id="cb4-81"><a href="#cb4-81" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-82"><a href="#cb4-82" aria-hidden="true" tabindex="-1"></a><span class="in">```{.yaml}</span></span>
|
||||
<span id="cb4-83"><a href="#cb4-83" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp</span><span class="kw">:</span></span>
|
||||
<span id="cb4-84"><a href="#cb4-84" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> </span>full_shard</span>
|
||||
<span id="cb4-85"><a href="#cb4-85" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> </span>auto_wrap</span>
|
||||
<span id="cb4-86"><a href="#cb4-86" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_config</span><span class="kw">:</span></span>
|
||||
<span id="cb4-87"><a href="#cb4-87" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_offload_params</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
|
||||
<span id="cb4-88"><a href="#cb4-88" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_state_dict_type</span><span class="kw">:</span><span class="at"> FULL_STATE_DICT</span></span>
|
||||
<span id="cb4-89"><a href="#cb4-89" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_transformer_layer_cls_to_wrap</span><span class="kw">:</span><span class="at"> LlamaDecoderLayer</span></span>
|
||||
<span id="cb4-90"><a href="#cb4-90" aria-hidden="true" tabindex="-1"></a><span class="in">```</span></span>
|
||||
<span id="cb4-91"><a href="#cb4-91" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-92"><a href="#cb4-92" aria-hidden="true" tabindex="-1"></a><span class="fu">## Sequence parallelism {#sec-sequence-parallelism}</span></span>
|
||||
<span id="cb4-93"><a href="#cb4-93" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-94"><a href="#cb4-94" aria-hidden="true" tabindex="-1"></a>We support sequence parallelism (SP) via the</span>
|
||||
<span id="cb4-95"><a href="#cb4-95" aria-hidden="true" tabindex="-1"></a><span class="co">[</span><span class="ot">ring-flash-attention</span><span class="co">](https://github.com/zhuzilin/ring-flash-attention)</span> project. This</span>
|
||||
<span id="cb4-96"><a href="#cb4-96" aria-hidden="true" tabindex="-1"></a>allows one to split up sequences across GPUs, which is useful in the event that a</span>
|
||||
<span id="cb4-97"><a href="#cb4-97" aria-hidden="true" tabindex="-1"></a>single sequence causes OOM errors during model training.</span>
|
||||
<span id="cb4-98"><a href="#cb4-98" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-99"><a href="#cb4-99" aria-hidden="true" tabindex="-1"></a>See our <span class="co">[</span><span class="ot">dedicated guide</span><span class="co">](sequence_parallelism.qmd)</span> for more information.</span>
|
||||
<span id="cb4-100"><a href="#cb4-100" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-101"><a href="#cb4-101" aria-hidden="true" tabindex="-1"></a><span class="fu">### FSDP + QLoRA {#sec-fsdp-qlora}</span></span>
|
||||
<span id="cb4-102"><a href="#cb4-102" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-103"><a href="#cb4-103" aria-hidden="true" tabindex="-1"></a>For combining FSDP with QLoRA, see our <span class="co">[</span><span class="ot">dedicated guide</span><span class="co">](fsdp_qlora.qmd)</span>.</span>
|
||||
<span id="cb4-104"><a href="#cb4-104" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-105"><a href="#cb4-105" aria-hidden="true" tabindex="-1"></a><span class="fu">## Performance Optimization {#sec-performance}</span></span>
|
||||
<span id="cb4-106"><a href="#cb4-106" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-107"><a href="#cb4-107" aria-hidden="true" tabindex="-1"></a><span class="fu">### Liger Kernel Integration {#sec-liger}</span></span>
|
||||
<span id="cb4-108"><a href="#cb4-108" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-109"><a href="#cb4-109" aria-hidden="true" tabindex="-1"></a>Please see <span class="co">[</span><span class="ot">docs</span><span class="co">](custom_integrations.qmd#liger)</span> for more info.</span>
|
||||
<span id="cb4-110"><a href="#cb4-110" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-111"><a href="#cb4-111" aria-hidden="true" tabindex="-1"></a><span class="fu">## Troubleshooting {#sec-troubleshooting}</span></span>
|
||||
<span id="cb4-112"><a href="#cb4-112" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-113"><a href="#cb4-113" aria-hidden="true" tabindex="-1"></a><span class="fu">### NCCL Issues {#sec-nccl}</span></span>
|
||||
<span id="cb4-114"><a href="#cb4-114" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-115"><a href="#cb4-115" aria-hidden="true" tabindex="-1"></a>For NCCL-related problems, see our <span class="co">[</span><span class="ot">NCCL troubleshooting guide</span><span class="co">](nccl.qmd)</span>.</span>
|
||||
<span id="cb4-116"><a href="#cb4-116" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-117"><a href="#cb4-117" aria-hidden="true" tabindex="-1"></a><span class="fu">### Common Problems {#sec-common-problems}</span></span>
|
||||
<span id="cb4-118"><a href="#cb4-118" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-119"><a href="#cb4-119" aria-hidden="true" tabindex="-1"></a>::: {.panel-tabset}</span>
|
||||
<span id="cb4-120"><a href="#cb4-120" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-121"><a href="#cb4-121" aria-hidden="true" tabindex="-1"></a><span class="fu">## Memory Issues</span></span>
|
||||
<span id="cb4-122"><a href="#cb4-122" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-123"><a href="#cb4-123" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Reduce <span class="in">`micro_batch_size`</span></span>
|
||||
<span id="cb4-124"><a href="#cb4-124" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Reduce <span class="in">`eval_batch_size`</span></span>
|
||||
<span id="cb4-125"><a href="#cb4-125" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Adjust <span class="in">`gradient_accumulation_steps`</span></span>
|
||||
<span id="cb4-126"><a href="#cb4-126" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Consider using a higher ZeRO stage</span>
|
||||
<span id="cb4-127"><a href="#cb4-127" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-128"><a href="#cb4-128" aria-hidden="true" tabindex="-1"></a><span class="fu">## Training Instability</span></span>
|
||||
<span id="cb4-129"><a href="#cb4-129" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-130"><a href="#cb4-130" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Start with DeepSpeed ZeRO-2</span>
|
||||
<span id="cb4-131"><a href="#cb4-131" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Monitor loss values</span>
|
||||
<span id="cb4-132"><a href="#cb4-132" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Check learning rates</span>
|
||||
<span id="cb4-133"><a href="#cb4-133" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-134"><a href="#cb4-134" aria-hidden="true" tabindex="-1"></a>:::</span>
|
||||
<span id="cb4-135"><a href="#cb4-135" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb4-136"><a href="#cb4-136" aria-hidden="true" tabindex="-1"></a>For more detailed troubleshooting, see our <span class="co">[</span><span class="ot">debugging guide</span><span class="co">](debugging.qmd)</span>.</span></code><button title="Copy to Clipboard" class="code-copy-button" data-in-quarto-modal=""><i class="bi"></i></button></pre></div>
|
||||
<div class="sourceCode" id="cb6" data-shortcodes="false"><pre class="sourceCode markdown code-with-copy"><code class="sourceCode markdown"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a><span class="co">---</span></span>
|
||||
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a><span class="an">title:</span><span class="co"> "Multi-GPU"</span></span>
|
||||
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a><span class="an">format:</span></span>
|
||||
<span id="cb6-4"><a href="#cb6-4" aria-hidden="true" tabindex="-1"></a><span class="co"> html:</span></span>
|
||||
<span id="cb6-5"><a href="#cb6-5" aria-hidden="true" tabindex="-1"></a><span class="co"> toc: true</span></span>
|
||||
<span id="cb6-6"><a href="#cb6-6" aria-hidden="true" tabindex="-1"></a><span class="co"> toc-depth: 3</span></span>
|
||||
<span id="cb6-7"><a href="#cb6-7" aria-hidden="true" tabindex="-1"></a><span class="co"> number-sections: true</span></span>
|
||||
<span id="cb6-8"><a href="#cb6-8" aria-hidden="true" tabindex="-1"></a><span class="co"> code-tools: true</span></span>
|
||||
<span id="cb6-9"><a href="#cb6-9" aria-hidden="true" tabindex="-1"></a><span class="an">execute:</span></span>
|
||||
<span id="cb6-10"><a href="#cb6-10" aria-hidden="true" tabindex="-1"></a><span class="co"> enabled: false</span></span>
|
||||
<span id="cb6-11"><a href="#cb6-11" aria-hidden="true" tabindex="-1"></a><span class="co">---</span></span>
|
||||
<span id="cb6-12"><a href="#cb6-12" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-13"><a href="#cb6-13" aria-hidden="true" tabindex="-1"></a>This guide covers advanced training configurations for multi-GPU setups using Axolotl.</span>
|
||||
<span id="cb6-14"><a href="#cb6-14" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-15"><a href="#cb6-15" aria-hidden="true" tabindex="-1"></a><span class="fu">## Overview {#sec-overview}</span></span>
|
||||
<span id="cb6-16"><a href="#cb6-16" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-17"><a href="#cb6-17" aria-hidden="true" tabindex="-1"></a>Axolotl supports several methods for multi-GPU training:</span>
|
||||
<span id="cb6-18"><a href="#cb6-18" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-19"><a href="#cb6-19" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>DeepSpeed (recommended)</span>
|
||||
<span id="cb6-20"><a href="#cb6-20" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>FSDP (Fully Sharded Data Parallel)</span>
|
||||
<span id="cb6-21"><a href="#cb6-21" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Sequence parallelism</span>
|
||||
<span id="cb6-22"><a href="#cb6-22" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>FSDP + QLoRA</span>
|
||||
<span id="cb6-23"><a href="#cb6-23" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-24"><a href="#cb6-24" aria-hidden="true" tabindex="-1"></a><span class="fu">## DeepSpeed {#sec-deepspeed}</span></span>
|
||||
<span id="cb6-25"><a href="#cb6-25" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-26"><a href="#cb6-26" aria-hidden="true" tabindex="-1"></a><span class="fu">### Configuration {#sec-deepspeed-config}</span></span>
|
||||
<span id="cb6-27"><a href="#cb6-27" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-28"><a href="#cb6-28" aria-hidden="true" tabindex="-1"></a>Add to your YAML config:</span>
|
||||
<span id="cb6-29"><a href="#cb6-29" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-30"><a href="#cb6-30" aria-hidden="true" tabindex="-1"></a><span class="in">```{.yaml}</span></span>
|
||||
<span id="cb6-31"><a href="#cb6-31" aria-hidden="true" tabindex="-1"></a><span class="fu">deepspeed</span><span class="kw">:</span><span class="at"> deepspeed_configs/zero1.json</span></span>
|
||||
<span id="cb6-32"><a href="#cb6-32" aria-hidden="true" tabindex="-1"></a><span class="in">```</span></span>
|
||||
<span id="cb6-33"><a href="#cb6-33" aria-hidden="true" tabindex="-1"></a><span class="fu">### Usage {#sec-deepspeed-usage}</span></span>
|
||||
<span id="cb6-34"><a href="#cb6-34" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-35"><a href="#cb6-35" aria-hidden="true" tabindex="-1"></a><span class="in">```{.bash}</span></span>
|
||||
<span id="cb6-36"><a href="#cb6-36" aria-hidden="true" tabindex="-1"></a><span class="co"># Fetch deepspeed configs (if not already present)</span></span>
|
||||
<span id="cb6-37"><a href="#cb6-37" aria-hidden="true" tabindex="-1"></a><span class="ex">axolotl</span> fetch deepspeed_configs</span>
|
||||
<span id="cb6-38"><a href="#cb6-38" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-39"><a href="#cb6-39" aria-hidden="true" tabindex="-1"></a><span class="co"># Passing arg via config</span></span>
|
||||
<span id="cb6-40"><a href="#cb6-40" aria-hidden="true" tabindex="-1"></a><span class="ex">axolotl</span> train config.yml</span>
|
||||
<span id="cb6-41"><a href="#cb6-41" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-42"><a href="#cb6-42" aria-hidden="true" tabindex="-1"></a><span class="co"># Passing arg via cli</span></span>
|
||||
<span id="cb6-43"><a href="#cb6-43" aria-hidden="true" tabindex="-1"></a><span class="ex">axolotl</span> train config.yml <span class="at">--deepspeed</span> deepspeed_configs/zero1.json</span>
|
||||
<span id="cb6-44"><a href="#cb6-44" aria-hidden="true" tabindex="-1"></a><span class="in">```</span></span>
|
||||
<span id="cb6-45"><a href="#cb6-45" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-46"><a href="#cb6-46" aria-hidden="true" tabindex="-1"></a><span class="fu">### ZeRO Stages {#sec-zero-stages}</span></span>
|
||||
<span id="cb6-47"><a href="#cb6-47" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-48"><a href="#cb6-48" aria-hidden="true" tabindex="-1"></a>We provide default configurations for:</span>
|
||||
<span id="cb6-49"><a href="#cb6-49" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-50"><a href="#cb6-50" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 1 (<span class="in">`zero1.json`</span>)</span>
|
||||
<span id="cb6-51"><a href="#cb6-51" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 1 with torch compile (<span class="in">`zero1_torch_compile.json`</span>)</span>
|
||||
<span id="cb6-52"><a href="#cb6-52" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 2 (<span class="in">`zero2.json`</span>)</span>
|
||||
<span id="cb6-53"><a href="#cb6-53" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 3 (<span class="in">`zero3.json`</span>)</span>
|
||||
<span id="cb6-54"><a href="#cb6-54" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 3 with bf16 (<span class="in">`zero3_bf16.json`</span>)</span>
|
||||
<span id="cb6-55"><a href="#cb6-55" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 3 with bf16 and CPU offload params(<span class="in">`zero3_bf16_cpuoffload_params.json`</span>)</span>
|
||||
<span id="cb6-56"><a href="#cb6-56" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>ZeRO Stage 3 with bf16 and CPU offload params and optimizer (<span class="in">`zero3_bf16_cpuoffload_all.json`</span>)</span>
|
||||
<span id="cb6-57"><a href="#cb6-57" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-58"><a href="#cb6-58" aria-hidden="true" tabindex="-1"></a>::: {.callout-tip}</span>
|
||||
<span id="cb6-59"><a href="#cb6-59" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-60"><a href="#cb6-60" aria-hidden="true" tabindex="-1"></a>Choose the configuration that offloads the least amount to memory while still being able to fit on VRAM for best performance.</span>
|
||||
<span id="cb6-61"><a href="#cb6-61" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-62"><a href="#cb6-62" aria-hidden="true" tabindex="-1"></a>Start from Stage 1 -> Stage 2 -> Stage 3.</span>
|
||||
<span id="cb6-63"><a href="#cb6-63" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-64"><a href="#cb6-64" aria-hidden="true" tabindex="-1"></a>:::</span>
|
||||
<span id="cb6-65"><a href="#cb6-65" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-66"><a href="#cb6-66" aria-hidden="true" tabindex="-1"></a>::: {.callout-tip}</span>
|
||||
<span id="cb6-67"><a href="#cb6-67" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-68"><a href="#cb6-68" aria-hidden="true" tabindex="-1"></a>Using ZeRO Stage 3 with Single-GPU training</span>
|
||||
<span id="cb6-69"><a href="#cb6-69" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-70"><a href="#cb6-70" aria-hidden="true" tabindex="-1"></a>ZeRO Stage 3 can be used for training on a single GPU by manually setting the environment variables:</span>
|
||||
<span id="cb6-71"><a href="#cb6-71" aria-hidden="true" tabindex="-1"></a><span class="in">`WORLD_SIZE=1 LOCAL_RANK=0 MASTER_ADDR=0.0.0.0 MASTER_PORT=29500`</span></span>
|
||||
<span id="cb6-72"><a href="#cb6-72" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-73"><a href="#cb6-73" aria-hidden="true" tabindex="-1"></a>:::</span>
|
||||
<span id="cb6-74"><a href="#cb6-74" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-75"><a href="#cb6-75" aria-hidden="true" tabindex="-1"></a><span class="fu">## Fully Sharded Data Parallel (FSDP) {#sec-fsdp}</span></span>
|
||||
<span id="cb6-76"><a href="#cb6-76" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-77"><a href="#cb6-77" aria-hidden="true" tabindex="-1"></a>::: {.callout-note}</span>
|
||||
<span id="cb6-78"><a href="#cb6-78" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-79"><a href="#cb6-79" aria-hidden="true" tabindex="-1"></a>FSDP2 is recommended for new users. FSDP1 is deprecated and will be removed in an upcoming release of Axolotl.</span>
|
||||
<span id="cb6-80"><a href="#cb6-80" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-81"><a href="#cb6-81" aria-hidden="true" tabindex="-1"></a>:::</span>
|
||||
<span id="cb6-82"><a href="#cb6-82" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-83"><a href="#cb6-83" aria-hidden="true" tabindex="-1"></a><span class="fu">### Migrating from FSDP1 to FSDP2 {#sec-migrate-fsdp1-fsdp2}</span></span>
|
||||
<span id="cb6-84"><a href="#cb6-84" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-85"><a href="#cb6-85" aria-hidden="true" tabindex="-1"></a>To migrate your config from FSDP1 to FSDP2, you must use the <span class="in">`fsdp_version`</span> top-level config field to specify the FSDP version, and</span>
|
||||
<span id="cb6-86"><a href="#cb6-86" aria-hidden="true" tabindex="-1"></a>also follow the config field mapping below to update field names.</span>
|
||||
<span id="cb6-87"><a href="#cb6-87" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-88"><a href="#cb6-88" aria-hidden="true" tabindex="-1"></a><span class="fu">#### Config mapping</span></span>
|
||||
<span id="cb6-89"><a href="#cb6-89" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-90"><a href="#cb6-90" aria-hidden="true" tabindex="-1"></a>FSDP1 | FSDP2</span>
|
||||
<span id="cb6-91"><a href="#cb6-91" aria-hidden="true" tabindex="-1"></a>-------- | --------</span>
|
||||
<span id="cb6-92"><a href="#cb6-92" aria-hidden="true" tabindex="-1"></a>fsdp_sharding_strategy | reshard_after_forward</span>
|
||||
<span id="cb6-93"><a href="#cb6-93" aria-hidden="true" tabindex="-1"></a>fsdp_backward_prefetch_policy | **REMOVED**</span>
|
||||
<span id="cb6-94"><a href="#cb6-94" aria-hidden="true" tabindex="-1"></a>fsdp_backward_prefetch | **REMOVED**</span>
|
||||
<span id="cb6-95"><a href="#cb6-95" aria-hidden="true" tabindex="-1"></a>fsdp_forward_prefetch | **REMOVED**</span>
|
||||
<span id="cb6-96"><a href="#cb6-96" aria-hidden="true" tabindex="-1"></a>fsdp_sync_module_states | **REMOVED**</span>
|
||||
<span id="cb6-97"><a href="#cb6-97" aria-hidden="true" tabindex="-1"></a>fsdp_cpu_ram_efficient_loading | cpu_ram_efficient_loading</span>
|
||||
<span id="cb6-98"><a href="#cb6-98" aria-hidden="true" tabindex="-1"></a>fsdp_state_dict_type | state_dict_type</span>
|
||||
<span id="cb6-99"><a href="#cb6-99" aria-hidden="true" tabindex="-1"></a>fsdp_use_orig_params | **REMOVED**</span>
|
||||
<span id="cb6-100"><a href="#cb6-100" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-101"><a href="#cb6-101" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-102"><a href="#cb6-102" aria-hidden="true" tabindex="-1"></a>For example, if you were using the following FSDP1 config:</span>
|
||||
<span id="cb6-103"><a href="#cb6-103" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-104"><a href="#cb6-104" aria-hidden="true" tabindex="-1"></a><span class="in">```{.yaml}</span></span>
|
||||
<span id="cb6-105"><a href="#cb6-105" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_version</span><span class="kw">:</span><span class="at"> </span><span class="dv">1</span></span>
|
||||
<span id="cb6-106"><a href="#cb6-106" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_config</span><span class="kw">:</span></span>
|
||||
<span id="cb6-107"><a href="#cb6-107" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_offload_params</span><span class="kw">:</span><span class="at"> </span><span class="ch">false</span></span>
|
||||
<span id="cb6-108"><a href="#cb6-108" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_cpu_ram_efficient_loading</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
|
||||
<span id="cb6-109"><a href="#cb6-109" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_auto_wrap_policy</span><span class="kw">:</span><span class="at"> TRANSFORMER_BASED_WRAP</span></span>
|
||||
<span id="cb6-110"><a href="#cb6-110" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_transformer_layer_cls_to_wrap</span><span class="kw">:</span><span class="at"> Qwen3DecoderLayer</span></span>
|
||||
<span id="cb6-111"><a href="#cb6-111" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_state_dict_type</span><span class="kw">:</span><span class="at"> FULL_STATE_DICT</span></span>
|
||||
<span id="cb6-112"><a href="#cb6-112" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_sharding_strategy</span><span class="kw">:</span><span class="at"> FULL_SHARD</span></span>
|
||||
<span id="cb6-113"><a href="#cb6-113" aria-hidden="true" tabindex="-1"></a><span class="in">```</span></span>
|
||||
<span id="cb6-114"><a href="#cb6-114" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-115"><a href="#cb6-115" aria-hidden="true" tabindex="-1"></a>You can migrate to the following FSDP2 config:</span>
|
||||
<span id="cb6-116"><a href="#cb6-116" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-117"><a href="#cb6-117" aria-hidden="true" tabindex="-1"></a><span class="in">```{.yaml}</span></span>
|
||||
<span id="cb6-118"><a href="#cb6-118" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_version</span><span class="kw">:</span><span class="at"> </span><span class="dv">2</span></span>
|
||||
<span id="cb6-119"><a href="#cb6-119" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_config</span><span class="kw">:</span></span>
|
||||
<span id="cb6-120"><a href="#cb6-120" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">offload_params</span><span class="kw">:</span><span class="at"> </span><span class="ch">false</span></span>
|
||||
<span id="cb6-121"><a href="#cb6-121" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">cpu_ram_efficient_loading</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
|
||||
<span id="cb6-122"><a href="#cb6-122" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">auto_wrap_policy</span><span class="kw">:</span><span class="at"> TRANSFORMER_BASED_WRAP</span></span>
|
||||
<span id="cb6-123"><a href="#cb6-123" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">transformer_layer_cls_to_wrap</span><span class="kw">:</span><span class="at"> Qwen3DecoderLayer</span></span>
|
||||
<span id="cb6-124"><a href="#cb6-124" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">state_dict_type</span><span class="kw">:</span><span class="at"> FULL_STATE_DICT</span></span>
|
||||
<span id="cb6-125"><a href="#cb6-125" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">reshard_after_forward</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
|
||||
<span id="cb6-126"><a href="#cb6-126" aria-hidden="true" tabindex="-1"></a><span class="in">```</span></span>
|
||||
<span id="cb6-127"><a href="#cb6-127" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-128"><a href="#cb6-128" aria-hidden="true" tabindex="-1"></a><span class="fu">### FSDP1 (deprecated) {#sec-fsdp-config}</span></span>
|
||||
<span id="cb6-129"><a href="#cb6-129" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-130"><a href="#cb6-130" aria-hidden="true" tabindex="-1"></a>::: {.callout-note}</span>
|
||||
<span id="cb6-131"><a href="#cb6-131" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-132"><a href="#cb6-132" aria-hidden="true" tabindex="-1"></a>Using <span class="in">`fsdp`</span> to configure FSDP is deprecated and will be removed in an upcoming release of Axolotl. Please use <span class="in">`fsdp_config`</span> as above instead.</span>
|
||||
<span id="cb6-133"><a href="#cb6-133" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-134"><a href="#cb6-134" aria-hidden="true" tabindex="-1"></a>:::</span>
|
||||
<span id="cb6-135"><a href="#cb6-135" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-136"><a href="#cb6-136" aria-hidden="true" tabindex="-1"></a><span class="in">```{.yaml}</span></span>
|
||||
<span id="cb6-137"><a href="#cb6-137" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp</span><span class="kw">:</span></span>
|
||||
<span id="cb6-138"><a href="#cb6-138" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> </span>full_shard</span>
|
||||
<span id="cb6-139"><a href="#cb6-139" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="kw">-</span><span class="at"> </span>auto_wrap</span>
|
||||
<span id="cb6-140"><a href="#cb6-140" aria-hidden="true" tabindex="-1"></a><span class="fu">fsdp_config</span><span class="kw">:</span></span>
|
||||
<span id="cb6-141"><a href="#cb6-141" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_offload_params</span><span class="kw">:</span><span class="at"> </span><span class="ch">true</span></span>
|
||||
<span id="cb6-142"><a href="#cb6-142" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_state_dict_type</span><span class="kw">:</span><span class="at"> FULL_STATE_DICT</span></span>
|
||||
<span id="cb6-143"><a href="#cb6-143" aria-hidden="true" tabindex="-1"></a><span class="at"> </span><span class="fu">fsdp_transformer_layer_cls_to_wrap</span><span class="kw">:</span><span class="at"> LlamaDecoderLayer</span></span>
|
||||
<span id="cb6-144"><a href="#cb6-144" aria-hidden="true" tabindex="-1"></a><span class="in">```</span></span>
|
||||
<span id="cb6-145"><a href="#cb6-145" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-146"><a href="#cb6-146" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-147"><a href="#cb6-147" aria-hidden="true" tabindex="-1"></a><span class="fu">## Sequence parallelism {#sec-sequence-parallelism}</span></span>
|
||||
<span id="cb6-148"><a href="#cb6-148" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-149"><a href="#cb6-149" aria-hidden="true" tabindex="-1"></a>We support sequence parallelism (SP) via the</span>
|
||||
<span id="cb6-150"><a href="#cb6-150" aria-hidden="true" tabindex="-1"></a><span class="co">[</span><span class="ot">ring-flash-attention</span><span class="co">](https://github.com/zhuzilin/ring-flash-attention)</span> project. This</span>
|
||||
<span id="cb6-151"><a href="#cb6-151" aria-hidden="true" tabindex="-1"></a>allows one to split up sequences across GPUs, which is useful in the event that a</span>
|
||||
<span id="cb6-152"><a href="#cb6-152" aria-hidden="true" tabindex="-1"></a>single sequence causes OOM errors during model training.</span>
|
||||
<span id="cb6-153"><a href="#cb6-153" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-154"><a href="#cb6-154" aria-hidden="true" tabindex="-1"></a>See our <span class="co">[</span><span class="ot">dedicated guide</span><span class="co">](sequence_parallelism.qmd)</span> for more information.</span>
|
||||
<span id="cb6-155"><a href="#cb6-155" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-156"><a href="#cb6-156" aria-hidden="true" tabindex="-1"></a><span class="fu">### FSDP + QLoRA {#sec-fsdp-qlora}</span></span>
|
||||
<span id="cb6-157"><a href="#cb6-157" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-158"><a href="#cb6-158" aria-hidden="true" tabindex="-1"></a>For combining FSDP with QLoRA, see our <span class="co">[</span><span class="ot">dedicated guide</span><span class="co">](fsdp_qlora.qmd)</span>.</span>
|
||||
<span id="cb6-159"><a href="#cb6-159" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-160"><a href="#cb6-160" aria-hidden="true" tabindex="-1"></a><span class="fu">## Performance Optimization {#sec-performance}</span></span>
|
||||
<span id="cb6-161"><a href="#cb6-161" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-162"><a href="#cb6-162" aria-hidden="true" tabindex="-1"></a><span class="fu">### Liger Kernel Integration {#sec-liger}</span></span>
|
||||
<span id="cb6-163"><a href="#cb6-163" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-164"><a href="#cb6-164" aria-hidden="true" tabindex="-1"></a>Please see <span class="co">[</span><span class="ot">docs</span><span class="co">](custom_integrations.qmd#liger)</span> for more info.</span>
|
||||
<span id="cb6-165"><a href="#cb6-165" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-166"><a href="#cb6-166" aria-hidden="true" tabindex="-1"></a><span class="fu">## Troubleshooting {#sec-troubleshooting}</span></span>
|
||||
<span id="cb6-167"><a href="#cb6-167" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-168"><a href="#cb6-168" aria-hidden="true" tabindex="-1"></a><span class="fu">### NCCL Issues {#sec-nccl}</span></span>
|
||||
<span id="cb6-169"><a href="#cb6-169" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-170"><a href="#cb6-170" aria-hidden="true" tabindex="-1"></a>For NCCL-related problems, see our <span class="co">[</span><span class="ot">NCCL troubleshooting guide</span><span class="co">](nccl.qmd)</span>.</span>
|
||||
<span id="cb6-171"><a href="#cb6-171" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-172"><a href="#cb6-172" aria-hidden="true" tabindex="-1"></a><span class="fu">### Common Problems {#sec-common-problems}</span></span>
|
||||
<span id="cb6-173"><a href="#cb6-173" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-174"><a href="#cb6-174" aria-hidden="true" tabindex="-1"></a>::: {.panel-tabset}</span>
|
||||
<span id="cb6-175"><a href="#cb6-175" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-176"><a href="#cb6-176" aria-hidden="true" tabindex="-1"></a><span class="fu">## Memory Issues</span></span>
|
||||
<span id="cb6-177"><a href="#cb6-177" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-178"><a href="#cb6-178" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Reduce <span class="in">`micro_batch_size`</span></span>
|
||||
<span id="cb6-179"><a href="#cb6-179" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Reduce <span class="in">`eval_batch_size`</span></span>
|
||||
<span id="cb6-180"><a href="#cb6-180" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Adjust <span class="in">`gradient_accumulation_steps`</span></span>
|
||||
<span id="cb6-181"><a href="#cb6-181" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Consider using a higher ZeRO stage</span>
|
||||
<span id="cb6-182"><a href="#cb6-182" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-183"><a href="#cb6-183" aria-hidden="true" tabindex="-1"></a><span class="fu">## Training Instability</span></span>
|
||||
<span id="cb6-184"><a href="#cb6-184" aria-hidden="true" tabindex="-1"></a></span>
|
||||
<span id="cb6-185"><a href="#cb6-185" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Start with DeepSpeed ZeRO-2</span>
|
||||
<span id="cb6-186"><a href="#cb6-186" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Monitor loss values</span>
|
||||
<span id="cb6-187"><a href="#cb6-187" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Check learning rates</span>
|
||||
<span id="cb6-188"><a href="#cb6-188" aria-hidden="true" tabindex="-1"></a></span>
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<span id="cb6-189"><a href="#cb6-189" aria-hidden="true" tabindex="-1"></a>:::</span>
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<span id="cb6-190"><a href="#cb6-190" aria-hidden="true" tabindex="-1"></a></span>
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||||
<span id="cb6-191"><a href="#cb6-191" aria-hidden="true" tabindex="-1"></a>For more detailed troubleshooting, see our <span class="co">[</span><span class="ot">debugging guide</span><span class="co">](debugging.qmd)</span>.</span></code><button title="Copy to Clipboard" class="code-copy-button" data-in-quarto-modal=""><i class="bi"></i></button></pre></div>
|
||||
</div></div></div></div></div>
|
||||
</div> <!-- /content -->
|
||||
|
||||
|
||||
Reference in New Issue
Block a user