open TELEMAC-MASCARET The mathematically superior suite of solvers

hello,
i have an issue with the installation of telemac with the python install path. i have it working in sequential mode and teh examples work like a charm but when i set it up to run in parallel mode it tells me :
I don't know how to run MPI, please help.

although the mpiexec is in my PATH variable and the config looks allright.
can anyone help?

i am already a step further:

i changed the config file :

configs: susgfortrans susgfortransdbg susgfopenmpi

which was wrong of course

i have a following issue with running in parallel:

LECDON_TELEMAC2D: ERROR FOR FILE NUMBER
I= 1 NAME=
THIS FILE SHOULD HAVE A STRING SUBMIT
IN DICTIONARY

PLANTE: PROGRAM STOPPED AFTER AN ERROR


this prevents running in parallel mode.

can someone help?

Hello,

If you are not in coupling mode, file 1 is the geometry file, check that its name is duly given in the steering file. If yes and if it works in scalar mode I do not know, check with one of the test-cases provided to see if it is linked to your case only.

Regards,

JMH

hi, i don't really know what you mean with coupling mode but i see in the working directory file appearing like:
T2DGEO
PARAL
PARTEL.PAR
partel_T2DGEO.log
T2DCAS
T2DCLI
T2DDICO

in the partel.TD2GEO.log there still is the line :
ERROR: TRY TO RUN PARTEL WITH A SERIAL CONFIGURATION

which i don't understand because it is compiled to run in parallel mode.

Hello,

OK, so the mesh has not been decomposed by partel, the files are not in the folder.
You get the message: ERROR: TRY TO RUN PARTEL WITH A SERIAL CONFIGURATION

when you do not add -DHAVE_MPI in the compiler directives. This is to link with MPI. SO I'm afraid you will have to recompile.

Regards,

Jean-Michel Hervouet (with help by Yoann Audouin)

i have added the -DHAVE_MPI in the config file and recompiled but to no avail.

i have added the new version of the config file.

after the compile : with modules : clean system (start from scratch)
i now have the problem that it crashes with a segmentation fault.

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0 0x2AAAAACE5E87
#1 0x2AAAAACE6454
#2 0x2AAAAC9B491F
#3 0x452977 in METIS_PartMeshDual
#4 0x4068E5 in partitioner_
#5 0x41882E in MAIN__ at partel.F:0
sh: line 1: 23422 Segmentation fault (core dumped) /home/user/telemac/v6p3r1/builds/susgfopenmpi/bin/partel < PARTEL.PAR >> partel_T2DGEO.log

Hi,

You get this error if you are using a earlier version of metis.
You need metis 5.x.x since v6p2.

Hope it helps.

ok, installed metis-5.xxx and recompiled the whole lot, so thanks.
It doesn't give any crashes anymore but it looks like i am back at square one.

First when i tried to use parallel processor =2 it gave me an error that the nc parameter didn't match the mpi nc parameter which is at 1. So I put the parallel processors back to 1, and ran it again.

and guess what, another error :

LECDON_TELEMAC2D: ERREUR POUR LE FICHIER
I= 1 NOM=
IL MANQUE UNE CHAINE SUBMIT DANS LE
DICTIONNAIRE

this is giving me a headache.