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Make threading an explicit option rather than relying on the MPI impl… #914

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Merged
boegel merged 3 commits into from
May 13, 2016
Merged

Make threading an explicit option rather than relying on the MPI impl… #914

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a995998
Make threading an explicit option rather than relying on the MPI impl…
May 10, 2016
1b1504d
Ensure backwards compatibility
May 13, 2016
c954170
Update scotch.py
May 13, 2016
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11 changes: 10 additions & 1 deletion easybuild/easyblocks/s/scotch.py
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@

import easybuild.tools.toolchain as toolchain
from easybuild.framework.easyblock import EasyBlock
from easybuild.framework.easyconfig import CUSTOM
from easybuild.tools.build_log import EasyBuildError
from easybuild.tools.filetools import copytree
from easybuild.tools.run import run_cmd
Expand All @@ -48,6 +49,14 @@
class EB_SCOTCH(EasyBlock):
"""Support for building/installing SCOTCH."""

@staticmethod
def extra_options(extra_vars=None):
"""Define custom easyconfig parameters specific to Scotch."""
extra_vars = {
'threadedmpi': [False, "Use threaded MPI calls.", CUSTOM],
}
return EasyBlock.extra_options(extra_vars)

def configure_step(self):
"""Configure SCOTCH build: locate the template makefile, copy it to a general Makefile.inc and patch it."""

Expand Down Expand Up @@ -108,7 +117,7 @@ def build_step(self):
if self.toolchain.options['i8']:
cflags += " -DINTSIZE64"

if not self.toolchain.mpi_family() in [toolchain.INTELMPI, toolchain.QLOGICMPI]: #@UndefinedVariable
if self.cfg['threadedmpi']:
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@boegel boegel May 10, 2016

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@ocaisa this implies that for builds on top of OpenMPI (for example), threadedmpi = True must be now specified to obtain the same installation, so this should be something like:

if self.cfg['threadedmpi'] or if self.toolchain.mpi_family() not in [toolchain.INTELMPI, toolchain.QLOGICMPI]

to ensure backward compatibility?

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@ocaisa ocaisa May 10, 2016 •
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Ok, but I'm pretty sure this wasn't working for people, to my eyes it's mostly there for OpenFOAM and threaded scotch does not work with OpenFOAM.
I'll set the default to true for OpenMPI (that's backwards compatibility for everything in the easyconfig repo) but personally I think this is probably not doing what people actually expect.

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@ocaisa ocaisa May 10, 2016

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How do I check a variable has been set in the easyconfig? I need to know if they have explicitly set the value to false in the easyconfig so I can ensure I only change the value to true when it's not defined there.

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@boegel boegel May 11, 2016

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@ocaisa you could use None as default value, and assume people will set it to False in the easyconfig?

and then check self.cfg['threadedmpi'] is None

there's no easy way to distinguish between a default value and the same value but specified by the easyconfig

cflags += " -DSCOTCH_PTHREAD"

# actually build
Expand Down