[ofiwg] GASNet with OFI on PSM provider

[Sayan Ghosh]

Just wanted to clarify that a discussion with GASNet developers revealed
that their PSM provider compatibility over OFI is only for PSM2 (since
TrueScale is an old technology).
https://groups.google.com/a/lbl.gov/forum/#!topic/gasnet-users/1Y_mDmdcCDw

On Tue, Jun 19, 2018 at 10:44 PM Sayan Ghosh <zsayanz at gmail.com> wrote:

> I am trying to install GASNet 1.30.0 using OFI on an Intel TrueScale
> network (PSM provider), and although OFI fi_info detects PSM provider (see
> attached output of fi_info), when I mention it during GASNet configure
> (config.log attached, please see line #10126), GASNet warns:
>
> WARNING: Invalid or unsupported OFI provider specified via the
> --with-ofi-provider flag.
> Defaulting to runtime provider feature detection for ofi-conduit.
>
> GASNet configuration:
>
> CC=icc CXX=icpc MPI_CC=/home/sghosh/builds/mvapich222-intel-psm/bin/mpicc
> MPI_CFLAGS="-I/home/sghosh/builds/mvapich222-intel-psm/include"
> MPI_LIBS="-L/home/sghosh/builds/mvapich222-intel-psm/lib -lpciaccess -lnuma
> -lxml2" ./configure --prefix=/home/sghosh/builds/gasnet-ofi --enable-ofi
> --with-ofi-home=/home/sghosh/builds/libfabric --disable-psm --disable-ibv
> --with-ofi-spawner=mpi --with-ofi-provider=psm
>
> GASNet throws this warning during application execution:
>
> WARNING: Using OFI provider (verbs;ofi_rxm), which has not been validated
> to provide
> WARNING: acceptable GASNet performance. You should consider using a more
> WARNING: hardware-appropriate GASNet conduit. See ofi-conduit/README.
> *** FATAL ERROR: The statically-determined value for
> GASNETC_OFI_HAS_MR_SCALABLE=1 does
>   not match the memory registration support that the (verbs;ofi_rxm)
> provider reported.
>   This could happen if a provider that previously only supported
> FI_MR_BASIC
>   added support for FI_MR_SCALABLE, or if the wrong provider was selected
> at runtime.
>   Use configure option --disable-ofi-mr-scalable to correct this.
>
> Instead of picking up psm, GASNet picks up verbs. I have reported this
> issue on GASNet user list as well. Please let me know if I can try some
> options in building libfabrics for PSM provider, that may fix this issue.
>
> --
> Thanks,
> Sayan | https://sg0.github.io/
>


-- 
Sayan | https://sg0.github.io/
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