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AutoTP Assert Kernel Injection Support #2939

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Merged
molly-smith merged 2 commits into from
Mar 6, 2023
Merged

AutoTP Assert Kernel Injection Support #2939

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1836ae0
check kernel injection supported models
molly-smith Mar 3, 2023
176806a
Clarify why user should use kernel injection
molly-smith Mar 3, 2023
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23 changes: 20 additions & 3 deletions deepspeed/module_inject/auto_tp.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
import re

from torch import nn
from .replace_policy import replace_policies


class AutoTP():
Expand Down Expand Up @@ -73,15 +74,30 @@ def update_policy_list(policy_list, new_module, new_gems):
policy_list.append(tuple([type(new_module), new_gems]))
return policy_list

def kernel_supported(module_list):
policy = []
for plcy in replace_policies:
# instantiate a throw-away policy in order to populate the _orig_layer_class
_ = plcy(None)
if isinstance(plcy._orig_layer_class, list):
for orig_layer_class in plcy._orig_layer_class:
policy.append(orig_layer_class)
elif plcy._orig_layer_class is not None:
policy.append(plcy._orig_layer_class)
for child in module_list:
if child.__class__ in policy:
return True
return False

def tp_parser(model):
policy_list = []
module_list = []
layer_list = []
gem_list = []

assert AutoTP.supported(model), "Automatic policy not supported for model. Please provide policy."

module_list = AutoTP.get_module_list(model)
assert AutoTP.supported(model), "AutoTP not supported for model. Please use kernel injection since container policy for model exists." \
if AutoTP.kernel_supported(module_list) else "AutoTP not supported for model. Please provide policy."
for module in module_list:
for key, submodule in module._modules.items():
if isinstance(submodule, nn.Linear):
Expand All @@ -103,5 +119,6 @@ def tp_parser(model):
gem_list = list(set(gem_list))
policy_list = AutoTP.update_policy_list(policy_list, module, gem_list)
gem_list = []
assert len(policy_list), "Not able to determine model policy automatically. Please provide policy."
assert len(policy_list), "AutoTP not supported for model. Please use kernel injection since container policy for model exists." \
if AutoTP.kernel_supported(module_list) else "Not able to determine model policy automatically. Please provide policy."
return policy_list