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mpich: add variant to enable per VCI critical sections (#27840)

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Hervé Yviquel 2022-04-25 12:31:13 -03:00 committed by GitHub
parent 2a8a0aa156
commit c1ed51e767
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1 changed files with 11 additions and 0 deletions
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var/spack/repos/builtin/packages/mpich/package.py
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@ -94,6 +94,13 @@ class Mpich(AutotoolsPackage, CudaPackage):
'-Wl,-flat_namespace'.'''
)
variant('vci', default=False, when='@4: device=ch4',
description='Enable multiple VCI (virtual communication '
'interface) critical sections to improve performance '
'of applications that do heavy concurrent MPI'
'communications. Set MPIR_CVAR_CH4_NUM_VCIS=<N> to '
'enable multiple vcis at runtime.')
# Todo: cuda can be a conditional variant, but it does not seem to work when
# overriding the variant from CudaPackage.
conflicts('+cuda', when='@:3.3')
@ -517,6 +524,10 @@ def configure_args(self):
if '+two_level_namespace' in spec:
config_args.append('--enable-two-level-namespace')
if '+vci' in spec:
config_args.append('--enable-thread-cs=per-vci')
config_args.append('--with-ch4-max-vcis=default')
return config_args
@run_after('install')