OpenSeesMP with Mumps

[brag006]

Hi,

I am running an analysis using OpenSeesMP on a cluster and using the Mumps solver. I am getting the following error:

WARNING MumpsParallelSolver::solve(void)- Error -9 returned in substitution dmumps()
Work array too small; use -ICNTL14 option, the default is -ICNTL 20 make 20 larger

The interesting thing is I only get that error when I run more the 4 tasks. I have set the system command as follows:

system Mumps -ICNTL14 100

I tried numbers smaller than 100 but with no luck.

I can't seem why it fails only when i run more than 4 tasks in parallel.

[fmk]

as you change the number of tasks it may be changing the elimination ordering so that more work can be done in parallel.

it should of course not fail.

[brag006]

Any suggestions on solving this problem? It seems to be a weird and I can't find the source of the problem

[fmk]

Mumps is proving to be somehwat tempermental. it does not like for example repeated calls to setSize. sometimes even with the same model one works and the next fails! i am working on the petsc interface in the hope that it is my code hat is messed up and that another interface to Mumps will not have the issues.

[brag006]

Thanks for that, your work is much appreciated.

Do you have any advice on temporary solutions? Time is of the essence and this is a really big obstacle for me.

Any suggestions would be much appreciated.

Regards,

[fmk]

other than the obvious (stick with 4 or less for the moment), no .. i am trying but it is just me (and 50% of that at the moment due to funding considerations) and i am juggling a number of hot topic items just now.