[Unity][PyTorch] Disable gradient during dynamo subgraph capture to save RAM#14602
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tqchen merged 1 commit intoapache:unityfrom Apr 12, 2023
Merged
[Unity][PyTorch] Disable gradient during dynamo subgraph capture to save RAM#14602tqchen merged 1 commit intoapache:unityfrom
tqchen merged 1 commit intoapache:unityfrom
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tqchen
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Apr 12, 2023
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I got an out-of-memory error on my 16G linux system when trying to trace VAE in web-stable-diffusion https://github.com/mlc-ai/web-stable-diffusion/blob/main/build.py#L82 (this is not an issue on Mac). This simple change let me complete the build successfully.
Using the
time -vcommand to measure the peak RAM usage of a script that does VAE tracing, I gotBefore:
Maximum resident set size (kbytes): 12288884After (disable grad):
Maximum resident set size (kbytes): 7179364So this is a good reduction of 5GB.
@MasterJH5574 @spectrometerHBH @junrushao