open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello,

I'm trying to use a very large mesh with Artemis and got the message :

RESOLUTION DIRECTE
At line 316 in file sd_solve_1.f
Traceback : not available <...>
Operating system error : Espace insuffisant pour traiter cette commande

I saw in the documentation that we can adjust the MEMFACTOR parameter in the sd_solve_1 sub-routine in case of large mesh.
I have therefore two questions :
1- is it the right thing to do, regarding the error message ? I run artemis under Win7 32bit with 4Gb RAM.
2- if yes, could you indicate me how to adjust the MEMFACTOR ? I had a look to sd_solve_1.f, and found the MEMFACTOR parametrizing at the line 250 but I don't know what to do now.

Thank you very much in advance.

Hello,

What is the number of elements in your mesh ? I'm afraid that in your case there is not enough memory in your machine for the direct solver. You can try an iterative solver to see if it would run, but it will be probably a lot of iterations.

With best regards,

Jean-Michel Hervouet

Thanks for your quick answer.
My mesh has about 1 000 000 nodes. I try the iterative solver and will reduce my area if I cannot obtain a result within one night.

Best regards.