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OpenMPI/4.1.6-cpeGNU-23.09 (OpenMPI-4.1.6-cpeGNU-23.09.eb)

Install with the EasyBuild-user module:

eb OpenMPI-4.1.6-cpeGNU-23.09.eb -r

To access module help after installation and get reminded for which stacks and partitions the module is installed, use module spider OpenMPI/4.1.6-cpeGNU-23.09.

EasyConfig:

easyblock = 'ConfigureMake'

name =    'OpenMPI'
version = '4.1.6'

homepage = 'https://www.open-mpi.org/'

whatis = [
    "Description: The Open MPI Project is an open source MPI-3 implementation."    
]

description = """
The Open MPI Project is an open source MPI-3 implementation.

Note that the MPI as provided by this module is not GPU-aware. That would
require a non-released branch of OpenMPI 5 and some components that are 
currently not supported on LUMI.

Both srun and mpirun can be used as process starters. It looks like
srun does a much better job of process placement though.

When running on a single node, there will be an error message about
failing on an OFI Librabric library call (fi_domain). It doesn't
seem to influence the running program though.

The MPI compiler wrappers from OpenMPI call the Cray compiler wrappers.

Note that the HPE Cray libfabric implementation with cxi provider for 
Slingshot is not feature-complete so not all MPI routines may work as 
expected. This module is offered as-is without any support or promise
that it would be suitable for your code.

The primary MPI application which users should use as much as possible on LUMI
is cray-mpich. This module is only to solve very specific problems and may in
fact cause other ones.
"""

usage = """
After loading this module, please unload the cray-libsci and cray-mpich modules
(the latter essential):

module unload cray-libsci cray-mpich
"""

docurls = [
    'Web-based manual pages on https://www.open-mpi.org/doc/v4.1/',
]

toolchain = {'name': 'cpeGNU', 'version': '23.09'}

source_urls = ['http://www.open-mpi.org/software/ompi/v%(version_major_minor)s/downloads']
sources =     [SOURCELOWER_TAR_BZ2]
checksums =   ['f740994485516deb63b5311af122c265179f5328a0d857a567b85db00b11e415']

preconfigopts = "module unload cray-libsci cray-mpich && "

# I was hoping to save configuration time by not testing for things that will
# not work on LUMI, but it doesn't turn out to be the case.
configopts  = '--without-ucx --without-verbs --without-usnic --without-verbs-usnic --without-portals4 --without-cuda '
configopts += '--without-ugni --without-psm --without-psm2 --without-mxm '
configopts += '--without-knem '
#configopts += '--without-pmix ' # Causes an error message even though in the end it is not built?
configopts += '--without-lsf --without-tm --without-sge --without-moab '
configopts += '--without-fca --without-hcoll --without-gpfs '
# The next ones are more important, certainly --with-ofi and --with-pmi.
configopts += '--with-cray-xpmem '
configopts += '--with-slurm '
configopts += '--with-ofi=/opt/cray/libfabric/$(pkg-config --modversion libfabric) '
configopts += '--with-pmi=/usr '

prebuildopts = "module unload cray-libsci cray-mpich && "

postinstallcmds = [
    'mkdir -p %(installdir)s/share/licenses/%(name)s && cp LICENSE README NEWS %(installdir)s/share/licenses/%(name)s'
]

sanity_check_paths = {
    'files': ['bin/ompi_info', 'bin/opal_wrapper', 'bin/orterun', 'lib/libmpi.so'],
    'dirs':  ['bin', 'lib', 'include'],
}

# Trying to unload cray-mpich in the LUA footer failes unless cpeGNU/23.09
# is loaded before in a separate module load.
#modluafooter = """
#-- family( "mpi" ) -- Cannot be used as the module first itself loads cray-mpich at the moment.
#if not ( isloaded("EasyBuild") ) then
#    unload( "cray-mpich" )
#end
#"""

moduleclass = 'mpi'

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