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[zero] add tensor placement policies (#743)

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* add tensor placement policies

* polish comments

* polish comments

* update moe unit tests
This commit is contained in:
ver217
2022-04-13 15:00:48 +08:00
committed by GitHub
parent 22c4b88d56
commit e396bb71f2
11 changed files with 139 additions and 83 deletions
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4
tests/test_moe/test_moe_zero_optim.py
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@@ -69,8 +69,7 @@ def _run_test_sharded_optim_v2(cpu_offload,
zero_model = ShardedModelV2(zero_model,
shard_strategy,
offload_config=dict(device='cpu') if cpu_offload else None,
use_memory_tracer=gpu_margin_mem_ratio > 0.0,
tensor_placement_policy='cpu' if cpu_offload else 'cuda',
reuse_fp16_shard=reuse_fp16_shard)
# check whether parameters are identical in ddp
@@ -88,7 +87,6 @@ def _run_test_sharded_optim_v2(cpu_offload,
sharded_optim = optimizer_class(zero_model.parameters(), lr=1e-3)
sharded_optim = ShardedOptimizerV2(zero_model,
sharded_optim,
cpu_offload=cpu_offload,
initial_scale=2**5,
gpu_margin_mem_ratio=gpu_margin_mem_ratio)