Kaiming Ouyang d03ae00bac Fix cudaMemcpyAsync bug ...

We are trying to use the copy result of first cudaMemcpyAsync in the
second cudaMemcpyAsync without sync in between. This patch fixes it
by allocating a CPU side array to cache device side addr so that we
can avoid this consecutive cuda mem copy.

Fixes #957


[ROCm/rccl commit: 4365458757]

2023-09-20 05:51:14 -07:00

projects/rccl

Fix cudaMemcpyAsync bug

2023-09-20 05:51:14 -07:00

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