Hi Ognen,
MPI-IO is implemented by two components:
- ROMIO (from MPICH)
- ompio ("native" Open MPI MPI-IO, default component unless running on Lustre)
Assuming you want to add support for a new filesystem in ompio, first
step is to implement a new component in the fs framework
the framework is in /ompi/mca/fs, and each component is in its own
directory (for example ompi/mca/fs/gpfs)
There are a some configury tricks (create a configure.m4, add Makefile
to autoconf, ...) to make sure your component is even compiled.
If you are struggling with these, feel free to open a Pull Request to
get some help fixing the missing bits.
Cheers,
Gilles
On Sun, Nov 1, 2020 at 12:18 PM Ognen Duzlevski via users
<users@lists.open-mpi.org> wrote:
>
> Hello!
>
> If I wanted to support a specific filesystem in open mpi, how is this
> done? What code in the source tree does it?
>
> Thanks!
> Ognen
