Enable ckpt deserialization using colocated python. - #1362
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raytomato
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Mar 3, 2026
raytomato
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- Cherry picked PR 2/n to 4/n.
* [2/n] Add colocated python path to checkpoint manager. * Fix threading and asyncio bugs. * resolve dex-ai's comments. * Minor, remove redundant logging.
* [3/n] Use limiter to control cpu to tpu transfer to avoid OOM. * Use explicit profile call to trigger the patch properly. * Add tensor statics in the benchmark script. * Add more logging for located python. * Add accurate compute for per device bytes.
…ther reduce memory usage (#2214) * [4/n] Use global limiter to control the full model loading pipeline to further reduce memory usage. * Fix the index array issue. Plus minor optimization of the thread pool. * Fix parallel execution of colocated python. * more accurate byte per device computation. * Enable colocated python by default when it's available. Controlled through ENV when it's available. Controlled through ENV.. * simplify limiter usage in load_and_transfer_one * Resolve devx-ai's comments. * fix global_shape issue * resolve Ethan's comment. * minor tensorspec open improvement * resolve Ethan's new comments. And minor improvement in case ts has no read chunk.
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