Well - this was the previous default - and was removed as it was deemed
unnecessary.
https://bitbucket.org/petsc/petsc/commits/2d4f01c230fe350f0ab5a28d1f5ef05ceab7ea3d
The attached patch provides --download-metis-use-doubleprecision option
Satish
On Thu, 10 Jan 2019, Matthew Overholt via petsc-users wrote:
> Hello,
>
> How does one configure the PETSc installation to download METIS and have it
> use REALTYPEWIDTH 64 (as defined in metis.h)? I am using:
>
> --with-64-bit-indices --download-metis=yes
>
> to get IDXTYPEWIDTH 64. If I were installing METIS independently I would
> set the following near the top of metis.h: #define
> METIS_USE_DOUBLEPRECISION
>
> The reason for this is I want to call METIS routines outside of PETSc and
> prefer double precision.
>
> Thanks,
> Matt Overholt
> CapeSym, Inc.
>
diff --git a/config/BuildSystem/config/packages/metis.py
b/config/BuildSystem/config/packages/metis.py
index be348891e2..136526da05 100644
--- a/config/BuildSystem/config/packages/metis.py
+++ b/config/BuildSystem/config/packages/metis.py
@@ -12,6 +12,12 @@ class Configure(config.package.CMakePackage):
self.hastests = 1
return
+ def setupHelp(self, help):
+ config.package.CMakePackage.setupHelp(self,help)
+ import nargs
+ help.addArgument('METIS', '-download-metis-use-doubleprecision=<bool>',
nargs.ArgBool(None, 0, 'enable METIS_USE_DOUBLEPRECISION'))
+ return
+
def setupDependencies(self, framework):
config.package.CMakePackage.setupDependencies(self, framework)
self.compilerFlags = framework.require('config.compilerFlags', self)
@@ -33,6 +39,8 @@ class Configure(config.package.CMakePackage):
args.append('-DDEBUG=1')
if self.getDefaultIndexSize() == 64:
args.append('-DMETIS_USE_LONGINDEX=1')
+ if self.framework.argDB['download-metis-use-doubleprecision']:
+ args.append('-DMETIS_USE_DOUBLEPRECISION=1')
args.append('-DMATH_LIB="'+self.libraries.toStringNoDupes(self.mathlib.lib)+'"')
return args
