Call deleter when destroying unconsumed DLPack PyCapsules#9297
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t-vi wants to merge 1 commit intopytorch:masterfrom
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Call deleter when destroying unconsumed DLPack PyCapsules#9297t-vi wants to merge 1 commit intopytorch:masterfrom
t-vi wants to merge 1 commit intopytorch:masterfrom
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Usually DLPack consumer is expected to call DLManagedTensor's deleter to signal that it doesn't need the contents. This patch calls the deleter when freeing unconsumed DLPack capsules created by PyTorch.
soumith
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Jul 10, 2018
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Summary:
Usually DLPack consumer is expected to call DLManagedTensor's
deleter to signal that it doesn't need the contents.
This patch calls the deleter when freeing unconsumed
DLPack capsules created by PyTorch.
Test script:
```
import torch
import torch.utils.dlpack
import gc
for i in range(10000):
a = torch.randn(1000,1000, dtype=torch.float32, device='cuda')
b = torch.utils.dlpack.to_dlpack(a)
gc.collect()
```
Before patch: consume all GPU ram.
After patch: constant GPU ram consumption.
Pull Request resolved: pytorch#9297
Differential Revision: D8781571
Pulled By: soumith
fbshipit-source-id: 2ebadec6c857646220d632ca64110af430dbd52f
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Usually DLPack consumer is expected to call DLManagedTensor's
deleter to signal that it doesn't need the contents.
This patch calls the deleter when freeing unconsumed
DLPack capsules created by PyTorch.
Test script:
Before patch: consume all GPU ram.
After patch: constant GPU ram consumption.