On 2013-12-13 15:01, Jan Blechta wrote:
On Fri, 13 Dec 2013 14:51:19 +0000
"Garth N. Wells" <[email protected]> wrote:
On 2013-12-13 14:48, Jan Blechta wrote:
> On Fri, 13 Dec 2013 14:40:06 +0000
> "Garth N. Wells" <[email protected]> wrote:
>
>> On 2013-12-13 14:08, Jan Blechta wrote:
>> > Hi,
>> >
>> > DOLFIN build system looks for scotch_esmumps library. But the
>> > functionality (passing some SCOTCH data to MUMPS elimination
>> > tree computation algorithm) seems to be broken in
>> > scotch_esmumps_6.0.0 according to
>> > http://graal.ens-lyon.fr/MUMPS/index.php?page=faq#19. Does DOLFIN
>> > employ this functionality in fact? Is it then possible to link
>> > DOLFIN with scotch_6.0.0 and esmumps_5.1.12b?
>> >
>>
>> Just use SCOTCH 5.1.12.
>>
>> I loathe to do any special for a package like MUMPS that doesn't
>> bother to keep up with other library releases (MUMPS still does not
>> support ParMETIS 4, despite it being available for 2 1/2 years).
>
> You don't need to do anything - DOLFIN compiles with SCOTCH 6.0.0.
> Moreover MUMPS website claims that this is rather a bug in SCOTCH
> than MUMPS, isn't it?
>
So they say, but where is the bug report and where is the MUMPS
development repository?
Yes, I did not find the bug in SCOTCH bug tracker.
> Nevertheless you did not answer my question: is this scotch_esmumps
> functionality employed when using DOLFIN?
>
It is likely required when building DOLFIN with MUMPS.
When you're not explicitly aware of this functionality (a communication
of the partitioner and the solver) then this is probably not in use. I
believe that the solver has no access to partitioning objects to be
able
to do calls to SCOTCH behind the scene. Am I right?
The mesh partitioner does not use esmumps functionality.
If one builds DOLFIN with MUMPS, then one will generally require linkage
to scotch_esmumps. Feel free to modify the configure system if you wish
to detect esmumps only when configuring DOLFIN with MUMPS.
Garth
Jan
Garth
> Jan
>
>>
>> Garth
>>
>> > Jan
>> > _______________________________________________
>> > fenics-support mailing list
>> > [email protected]
>> > http://fenicsproject.org/mailman/listinfo/fenics-support
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