Update Prefetcher and Implement PinMemory IterDataPipe #1014
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I need to rebase onto #1003 after it's landed. |
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torchdata/utils/pin_memory.py
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| def pin_memory_fn(data, device=None): |
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Non-blocking: A short docstring and add this to torchdata.datapipes.utils.rst will be nice.
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Summary: Fixes pytorch#1013 ## Changes - Simplify the control flow of prefetcher - Delay Exception raised from thread worker to main thread in `__iter__` - Stop prefetching whenever Exception is received - As long as `stop_iteration` is not turned on or `buffer` is not empty, continue yielding data from `__iter__`. - Add serialization test - Add `PinMemory` DataPipe - `is_replciable() -> False` to keep it in the main process - Add unit tests - Update `test_proto_multi_rs.py` to `test_mprs.py` Pull Request resolved: pytorch#1014 Reviewed By: NivekT Differential Revision: D43329696 Pulled By: ejguan fbshipit-source-id: da4326dbe2388f4e23b9a1a3a5c43da09d29185a
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Summary: Fixes #1013 ## Changes - Simplify the control flow of prefetcher - Delay Exception raised from thread worker to main thread in `__iter__` - Stop prefetching whenever Exception is received - As long as `stop_iteration` is not turned on or `buffer` is not empty, continue yielding data from `__iter__`. - Add serialization test - Add `PinMemory` DataPipe - `is_replciable() -> False` to keep it in the main process - Add unit tests - Update `test_proto_multi_rs.py` to `test_mprs.py` Pull Request resolved: #1014 Reviewed By: NivekT Differential Revision: D43329696 Pulled By: ejguan fbshipit-source-id: da4326dbe2388f4e23b9a1a3a5c43da09d29185a
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Fixes #1013
Changes
__iter__stop_iterationis not turned on orbufferis not empty, continue yielding data from__iter__.PinMemoryDataPipeis_replciable() -> Falseto keep it in the main processtest_proto_multi_rs.pytotest_mprs.py