PyTorch使用自定义的内存分配器来管理GPU内存,这有助于减少内存碎片并提升内存分配的效率。PyTorch的内存分配器会维护一个缓存,用于存储最近释放的内存块,以便快速重新分配给需要它们的张量。这种机制减少了频繁的内存分配和释放操作,从而提高了性能。 2. 描述allocator cache flushes的含义 "Allocator cache flushes"指的
“4 pytorch allocator cache flushes since last step. this happens when there is high memory pressure and is detrimental to performance. if this is happening frequently consider adjusting settings to reduce memory consumption. If you are unable to make the cache flushes go away consider adding get_...