make pad_to_sequence_len default to the same value as sample_packing (#2941) [skip ci]

* make pad_to_sequence_len default to the same value as sample_packing

* remove duplicate validation

* fix test

* update description meta

Co-authored-by: NanoCode012 <nano@axolotl.ai>

---------

Co-authored-by: NanoCode012 <nano@axolotl.ai>

examples/mistral/bigstral-ds-zero3.yaml

@@ -27,7 +27,7 @@ output_dir: ./outputs/out
 
 sequence_len: 2048
 sample_packing: true
-pad_to_sequence_len: true
+
 
 gradient_accumulation_steps: 1
 micro_batch_size: 1

examples/mistral/config.yml

@@ -14,7 +14,7 @@ output_dir: ./outputs/out
 
 sequence_len: 8192
 sample_packing: true
-pad_to_sequence_len: true
+
 eval_sample_packing: false
 
 wandb_project:

examples/mistral/lora-mps.yml

@@ -18,7 +18,7 @@ lora_model_dir:
 
 sequence_len: 4096
 sample_packing: true
-pad_to_sequence_len: true
+
 
 lora_r: 32
 lora_alpha: 16

examples/mistral/lora.yml

@@ -20,7 +20,7 @@ lora_model_dir:
 
 sequence_len: 8192
 sample_packing: true
-pad_to_sequence_len: true
+
 
 lora_r: 32
 lora_alpha: 16

examples/mistral/mistral-dpo-qlora.yml

@@ -31,7 +31,7 @@ output_dir: ./outputs/dpo-qlora
 
 sequence_len: 2048
 sample_packing: false
-pad_to_sequence_len: true
+
 
 adapter: qlora
 lora_model_dir:

examples/mistral/mistral-qlora-orpo.yml

@@ -25,7 +25,7 @@ lora_model_dir:
 
 sequence_len: 4096
 sample_packing: false
-pad_to_sequence_len: true
+
 
 lora_r: 32
 lora_alpha: 16

examples/mistral/mixtral.yml

@@ -34,7 +34,7 @@ lora_model_dir:
 
 sequence_len: 4096
 sample_packing: true
-pad_to_sequence_len: true
+
 
 lora_r: 32
 lora_alpha: 16

examples/mistral/mixtral_22.yml

@@ -25,7 +25,7 @@ output_dir: ./outputs/out
 
 sequence_len: 8000
 sample_packing: true
-pad_to_sequence_len: true
+
 
 gradient_accumulation_steps: 1
 micro_batch_size: 1

examples/mistral/qlora.yml

@@ -20,7 +20,7 @@ lora_model_dir:
 
 sequence_len: 8192
 sample_packing: true
-pad_to_sequence_len: true
+
 
 lora_r: 32
 lora_alpha: 16