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Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 18:19
by Andrea_P
Rich_B wrote: ↑13 Jul 2021, 18:16
Elmergrid successfully partitioned the mesh and stored the mesh as shown below.
Created mesh directory: /nobackup/st/palmarini/CASO
Created subdirectory: partitioning.3
Saving mesh in parallel ElmerSolver format to directory /nobackup/st/palmarini/CASO/partitioning.3.
Can you show the project directory listing?
Rich.
I think it is this one:
Code: Select all
/nobackup/st/palmarini/CASO OSCILLAZIONI/CON CAMPO MAGNETICO/PROFILO TECHNICAL NOTES/MESH_300X600_b_1
Andrea
Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 18:36
by Rich_B
Elmergrid can't tolerate any spaces in the directory names.
You wanted this
/nobackup/st/palmarini/CASO OSCILLAZIONI/CON CAMPO MAGNETICO/PROFILO TECHNICAL NOTES/MESH_300X600_b_1
Elmergrid stopped at the first space and stored the partition meshes into
/nobackup/st/palmarini/CASO
So, just make a new project directory, without any spaces, or convert the spaces to underscores, and run again, it should work.
Rich.
Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 18:46
by Andrea_P
Rich_B wrote: ↑13 Jul 2021, 18:36
Elmergrid can't tolerate any spaces in the directory names.
You wanted this
/nobackup/st/palmarini/CASO OSCILLAZIONI/CON CAMPO MAGNETICO/PROFILO TECHNICAL NOTES/MESH_300X600_b_1
Elmergrid stopped at the first space and stored the partition meshes into
/nobackup/st/palmarini/CASO
So, just make a new project directory, without any spaces, or convert the spaces to underscores, and run again, it should work.
Rich.
Right now, I try. Thanks again.
Andrea
Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 18:51
by Andrea_P
Rich_B wrote: ↑13 Jul 2021, 18:36
Elmergrid can't tolerate any spaces in the directory names.
You wanted this
/nobackup/st/palmarini/CASO OSCILLAZIONI/CON CAMPO MAGNETICO/PROFILO TECHNICAL NOTES/MESH_300X600_b_1
Elmergrid stopped at the first space and stored the partition meshes into
/nobackup/st/palmarini/CASO
So, just make a new project directory, without any spaces, or convert the spaces to underscores, and run again, it should work.
Rich.
This is the new output file.
Andrea
Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 19:05
by Rich_B
Here is the error message:
WARNING:: CheckLinearSolverOptions: Only MUMPS and CPardiso direct solver interface implemented in parallel, trying MUMPS!
ERROR:: CheckLinearSolverOptions: MUMPS solver has not been installed.
This looks like a continuation of this post:
viewtopic.php?f=2&t=7528&p=25355&hilit= ... mps#p25355
Can you try an iterative solver?
Rich.
Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 19:13
by Andrea_P
Rich_B wrote: ↑13 Jul 2021, 19:05
Here is the error message:
WARNING:: CheckLinearSolverOptions: Only MUMPS and CPardiso direct solver interface implemented in parallel, trying MUMPS!
ERROR:: CheckLinearSolverOptions: MUMPS solver has not been installed.
This looks like a continuation of this post:
viewtopic.php?f=2&t=7528&p=25355&hilit= ... mps#p25355
Can you try an iterative solver?
Rich.
Unfortunately, I can't use an iterative method. It's better a direct one. Eventually, it should work, if I didn't use Umfpack. Do you know how the restart file works ?
-Andrea
Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 19:26
by Rich_B
Regarding the restart file, I've never used it, so can't say anything about it.
The error message indicates that umfpack isn't designed to be run in parallel. Does the case run properly in serial operation?
Rich.
Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 19:32
by Andrea_P
Rich_B wrote: ↑13 Jul 2021, 19:26
Regarding the restart file, I've never used it, so can't say anything about it.
The error message indicates that umfpack isn't designed to be run in parallel. Does the case run properly in serial operation?
Rich.
Honestly, I don't know if the case is for serial operation. How could I check?
Andrea
Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 20:00
by Rich_B
In ElmerGUI, click on 'Run', 'Parallel settings', and uncheck the box 'use parallel solver', then click on the green arrow to run.
Rich.
Re: PARALLELING COMPUTATION
Posted: 13 Jul 2021, 20:08
by Andrea_P
Rich_B wrote: ↑13 Jul 2021, 20:00
In ElmerGUI, click on 'Run', 'Parallel settings', and uncheck the box 'use parallel solver', then click on the green arrow to run.
Rich.
So, you referred to that. The problem runs well until the 900th iteration when it diverges. I have written a post about that:
viewtopic.php?f=3&t=7592