Add api paddle.device.cuda.empty_cache to release idle gpu memory hold by allocator。#35427
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tizhou86 merged 7 commits intoPaddlePaddle:developfrom Sep 14, 2021
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Add api paddle.device.cuda.empty_cache to release idle gpu memory hold by allocator。#35427tizhou86 merged 7 commits intoPaddlePaddle:developfrom
tizhou86 merged 7 commits intoPaddlePaddle:developfrom
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dingjiaweiww
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Sep 7, 2021
TCChenlong
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Sep 13, 2021
jzhang533
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Sep 13, 2021
xiaolao
dismissed stale reviews from jzhang533, TCChenlong, sneaxiy, and XiaoguangHu01
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AnnaTrainingG
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…d by allocator。 (PaddlePaddle#35427) * Add empty_cache api to release idle gpu memory hold by allocator,test=develop * Add empty_cache api to release idle gpu memory hold by allocator,test=develop * Add empty_cache api to release idle gpu memory hold by allocator,test=develop * Fix test coverage problem for empty_cache * delete redundant check for empty_cache * fix the problem of empty_cache's doc * delete the nvidia-smi comment in doc of empty_cache, test=document_fix
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PR types
New features
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APIs
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Add API paddle.device.cuda.empty_cache to releases idle cached memory held by the allocator so that those can be used in other GPU application and visible in
nvidia-smi. In most cases you don't need to use this function, Paddle does not release the memory back to the OS when you remove Tensors on the GPU, Because it keeps gpu memory in a pool so that next allocations can be done much faster.exaples: