openPMD/openPMD-api

MPI-I/O Hints

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#1,449 建立於 2023年5月23日

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MPIbackend: HDF5help wanted

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描述

Recent MPI standards provide in Chapter 14 - 14.2. FILE MANIPULATION standardized options to describe file striping, e.g., on Lustre.

ROMIO seems to support this well and also OpenMPI's OMPIO works well with those in 5.0+: https://github.com/open-mpi/ompi/issues/10132

We should consider exposing these options and setting reasonable defaults :)

https://www.mpi-forum.org/docs/mpi-4.0/mpi40-report.pdf

Older keys in T3PIO for ROMIO only: https://github.com/TACC/t3pio/blob/0ea823059607bd17c0faf0dd80c5a3979bf4ba69/libt3pio/set_info.c#L160-L173

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