refine auto_growth allocator #35732
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refine auto_growth allocator #35732
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PR types
Performance optimization
PR changes
Others
Describe
refine auto_growth allocator
CUDA does address alignment itself, so in most case we do not need to manually perform address alignment.
refer: https://stackoverflow.com/questions/14082964/cuda-alignment-256bytes-seriously
The problem is that, the original implementation may alloc more 256 bytes due to AlignedAllocator and the 256 bytes may put into
free blocks. Which may introduce more memory fragmentation and increase the time to find fit block when allocing new allocation.before
after
The max number of free blocks in standalone_executor_test(single thread, no gc version, for consistance) decreases: 200->185