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Move toward a base type of vector (count, type, blocklen, extent, disp) with disp and extent applying toward the count repertition and blocklen being a contiguous memory of type type. Implement 2 optimizations on this description used during type_commit: - collapse: successive similar datatype descriptions are collapsed together with an increased count. - fusion: fuse successive datatype descriptions in order to minimize the number of resulting memcpy during pack/unpack. Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
aka. OMPI_ENABLE_MPI1_COMPAT. Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Includes: - Fix the create_hindexed and vector creation. - Fix the handling of [get|set]_elements and _count. - Correctly compute the dispacement for block indexed types. Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Merge contiguous iov in order to minimize the number of returned iovec. Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Both the pack and unpack have been optimized, and brought in sync. Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
This work is based on @derbeyn patch provided on open-mpi#6678. I reworked it to be more inclusive (works now with both gcc and icc) and to cover more standard size lengths (4, 8, 16). Signed-off-by: George Bosilca <bosilca@icl.utk.edu> Signed-off-by: Nadia Derbey <Nadia.Derbey@atos.net>
Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
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