[mpich-devel] small MPI_Win_allocate

[Jeff Hammond]

If I call MPI_Win_allocate for e.g. 8 bytes, does it allocate shared memory
every time, and thus potentially allocate with page alignment, which could
cause a lot of empty VM space?

Perhaps I do not understand POSIX shared memory well enough, but it strikes
me that it might be a worthwhile optimization to have a memory pool for
small-size MPI_Win_allocate(_shared) calls.

Thanks,

Jeff

-- 
Jeff Hammond
jeff.science at gmail.com
http://jeffhammond.github.io/
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