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def generate_ds_config(ds_bf16, train_batch_size, nvme_offload_dir):
'''
DeepSpeed configuration
https://huggingface.co/docs/transformers/main_classes/deepspeed
'''
if nvme_offload_dir:
ds_config = {
"fp16": {
"enabled": not ds_bf16,
},
"bf16": {
"enabled": ds_bf16,
},
"zero_optimization": {
"stage": 3,
"offload_param": {
"device": "nvme",
"nvme_path": nvme_offload_dir,
"pin_memory": True,
"buffer_count": 5,
"buffer_size": 1e9,
"max_in_cpu": 1e9
},
"overlap_comm": True,
"reduce_bucket_size": "auto",
"contiguous_gradients": True,
"sub_group_size": 1e8,
"stage3_prefetch_bucket_size": "auto",
"stage3_param_persistence_threshold": "auto",
"stage3_max_live_parameters": "auto",
"stage3_max_reuse_distance": "auto",
},
"aio": {
"block_size": 262144,
"queue_depth": 32,
"thread_count": 1,
"single_submit": False,
"overlap_events": True
},
"steps_per_print": 2000,
"train_batch_size": train_batch_size,
"train_micro_batch_size_per_gpu": 1,
"wall_clock_breakdown": False
}
else:
ds_config = {
"fp16": {
"enabled": not ds_bf16,
},
"bf16": {
"enabled": ds_bf16,
},
"zero_optimization": {
"stage": 3,
"offload_param": {
"device": "cpu",
"pin_memory": True
},
"overlap_comm": True,
"contiguous_gradients": True,
"reduce_bucket_size": "auto",
"stage3_prefetch_bucket_size": "auto",
"stage3_param_persistence_threshold": "auto",
"stage3_max_live_parameters": "auto",
"stage3_max_reuse_distance": "auto",
},
"steps_per_print": 2000,
"train_batch_size": train_batch_size,
"train_micro_batch_size_per_gpu": 1,
"wall_clock_breakdown": False
}
return ds_config
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