bench fix

scripts/debug_qwen2_experts.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+"""Inspect Qwen2 MoE expert implementations for grouped-mm debugging."""
+
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+import torch
+
+ROOT = Path(__file__).resolve().parents[2]
+sys.path.extend(
+    [
+        str(ROOT / "transformers" / "src"),
+        str(ROOT / "src"),
+    ]
+)
+
+from transformers.models.qwen2_moe.configuration_qwen2_moe import Qwen2MoeConfig
+from transformers.models.qwen2_moe.modeling_qwen2_moe import Qwen2MoeSparseMoeBlock
+
+from axolotl.kernels.moe.torch_grouped import _iter_expert_impls
+
+
+def main() -> None:
+    cfg = Qwen2MoeConfig(
+        hidden_size=4096,
+        moe_intermediate_size=14336,
+        shared_expert_intermediate_size=14336,
+        num_experts=32,
+        num_experts_per_tok=4,
+    )
+
+    block = Qwen2MoeSparseMoeBlock(cfg).to("cuda", dtype=torch.bfloat16)
+    experts = block.experts
+    setattr(experts, "_ax_parent_block", block)
+
+    impls = _iter_expert_impls(experts)
+    print(f"impl count: {len(impls)}")
+    for idx, impl in enumerate(impls[:8]):
+        has_gate = hasattr(impl, "gate_proj")
+        has_up = hasattr(impl, "up_proj")
+        print(
+            f"impl[{idx}] type={impl.__class__.__name__} has_gate={has_gate} has_up={has_up}"
+        )
+        if has_gate:
+            print(f"  gate shape {tuple(impl.gate_proj.weight.shape)}")
+            print(f"  up shape   {tuple(impl.up_proj.weight.shape)}")
+            print(f"  down shape {tuple(impl.down_proj.weight.shape)}")
+
+
+if __name__ == "__main__":
+    main()