dolfin team mailing list archive

[Johannes Ring <johannr@xxxxxxxxx>]

On Wed, Oct 5, 2011 at 12:47 PM, Anders Logg <logg@xxxxxxxxx> wrote:
> On Tue, Oct 04, 2011 at 08:31:04PM +0200, Johannes Ring wrote:
>> On Tue, Oct 4, 2011 at 5:50 PM, Anders Logg <logg@xxxxxxxxx> wrote:
>> > On Tue, Oct 04, 2011 at 05:36:49PM +0200, Johannes Ring wrote:
>> >> On Tue, Oct 4, 2011 at 2:42 PM, Anders Logg <logg@xxxxxxxxx> wrote:
>> >> > It's in the 'logg' branch. I will merge once my buildbot is green, or
>> >> > rather "no longer yellow"... It seems to always hang with a timeout
>> >> > these days.
>> >>
>> >> It seems to be the cahn-hilliard cpp demo that hangs when run in
>> >> parallel. I don't know why but I will dig deeper tomorrow.
>> >
>> > Isn't it the Poisson demo?
>> >
>> > http://fenicsproject.org:8082/builders/dolfin-maverick-i386/builds/287/steps/dolfin%20check/logs/stdio
>> >
>> > Or am I looking at the wrong place?
>>
>> No, that is the correct place. I also thought it was the Poisson demo
>> but it worked fine when I logged in and ran it on the buildbot.
>
> ok.

The cahn-hilliard demo runs fine when using two or four processes, but
it hangs when using three processes and I get errors when I increase
it further:

[buildmaster:30400] *** An error occurred in MPI_Bcast
[buildmaster:30400] *** on communicator MPI COMMUNICATOR 5 DUP FROM 3
[buildmaster:30400] *** MPI_ERR_IN_STATUS: error code in status
[buildmaster:30400] *** MPI_ERRORS_ARE_FATAL (your MPI job will now abort)

Johannes