Add span_alloc for the size of gpu data allocation#786
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Not a good solution for distributed env |
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It seems this PR is not needed, as we can reallocate memory in the BODY on GPU for both CPU and GPU. |
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This is useful when the GPU copy memory grows during runtime. It may reserve more memory than currently needed, but it avoids the overhead of GPU memory reallocations.
It's not the best solution, as it's not good for low-rank on GPU.