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Re: Problems with -eps_monitor_draw and mpiexec

The X server does not like your hostname (localhost.localdomain). You can
set your DISPLAY env variable, or just give the display argument -display :0.0

 Matt

On 6/14/07, Tim Stitt <timothy.stitt@xxxxxxxx> wrote: 
Hi all,

I've finally got my parallel solver working in SLEPc. I want to monitor the
eigenvalues and error tolerances graphically using -eps_monitor_draw. This
works perfectly fine for the serial version of the code but when I test the
parallel version I get the following errors from all nodes:

[1]PETSC ERROR: --------------------- Error
Message ------------------------------------
[1]PETSC ERROR: Error in external library!
[1]PETSC ERROR: Unable to open display on localhost.localdomain:0.0
.  Make sure your COMPUTE NODES are authorized to connect
    to this X server and either your DISPLAY variable
    is set or you use the -display name option

FYI: I am testing these codes on a multi-core laptop so I am running mpiexec
directly from the command-line. Without -eps_monitor_draw the code runs as
aspected.

Just wondering if someone can hint at a fix so that I can get the graphical
monitoring working in parallel.

Regards,

Tim.

--
Dr. Timothy Stitt <timothy_dot_stitt_at_ichec.ie>
HPC Application Consultant - ICHEC (www.ichec.ie)

Dublin Institute for Advanced Studies
5 Merrion Square - Dublin 2 - Ireland

+353-1-6621333 (tel) / +353-1-6621477 (fax) / +353-874195427 (mobile)




--
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which
their experiments lead.
-- Norbert Wiener