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Big MPI--MPI I/O functionality #98

tonyskjellum opened this issue Jun 14, 2018 · 1 comment


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commented Jun 14, 2018


For 64-bit clean functionality, convenience, and symmetry, the Big MPI principles being applied in Ticket #80 to collective operations should be applied to MPI I/O functionality.


The I/O chapter will get new APIs for 64-bit clean support.

Changes to the Text

Appropriate new API and descriptions will be added with the _X suffix.

Impact on Implementations

Implementations will have to comply with 64-bit clean inside, add these new APIs, and make sure their drivers for parallel file systems support larger transfers and buffers.

Impact on Users

Users who opt in to the new API will be able to do bigger I/O transfers.


Tickets #80 and #97.

PR mpi-forum/mpi-standard#58


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commented Sep 20, 2018

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