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Added CPU offloading #3452

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Description

Added CPU offloading. Compilation takes no more than 1x GPU memory. Before engine compilation, the model and graph module are moved to CPU.

Fixes # (issue)

Type of change

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  • New feature (non-breaking change which adds functionality)

Checklist:

  • My code follows the style guidelines of this project (You can use the linters)
  • I have performed a self-review of my own code
  • I have commented my code, particularly in hard-to-understand areas and hacks
  • I have made corresponding changes to the documentation
  • I have added tests to verify my fix or my feature
  • New and existing unit tests pass locally with my changes
  • I have added the relevant labels to my PR in so that relevant reviewers are notified

@github-actions github-actions bot added component: conversion Issues re: Conversion stage component: api [Python] Issues re: Python API component: dynamo Issues relating to the `torch.compile` or `torch._dynamo.export` paths labels Mar 26, 2025
@github-actions github-actions bot requested a review from gs-olive March 26, 2025 16:33
@github-actions github-actions bot added the component: tests Issues re: Tests label Mar 31, 2025
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@peri044 peri044 peri044 left review comments

@zewenli98 zewenli98 zewenli98 left review comments

@narendasan narendasan Awaiting requested review from narendasan

@gs-olive gs-olive Awaiting requested review from gs-olive

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@cehongwang @peri044 @zewenli98 @facebook-github-bot