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Is this assertion for mask wrong? #400

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yinfangchen opened this issue Feb 15, 2024 · 1 comment
Open

Is this assertion for mask wrong? #400

yinfangchen opened this issue Feb 15, 2024 · 1 comment

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@yinfangchen
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I got an AssertionError: Mask is silently ignored due to the use of a custom kernel when training GPT-2 with examples/pretrain_gpt.sh.

This line leads to the assertion error:

Megatron-DeepSpeed/megatron/model/fused_softmax.py

Line 191 in 8387ae1

assert mask is None, "Mask is silently ignored due to the use of a custom kernel"

Is this assertion necessary? And is it even correct?
@LordEdison
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same puzzlement

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@yinfangchen @LordEdison