Author Topic: segmentation violation with 500 elements on 8 cpu  (Read 4664 times)

blackbird

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segmentation violation with 500 elements on 8 cpu
« on: February 27, 2015, 06:32:02 AM »
Dear FEAP Admin, dear all.

While using feap 8.3 in parallel for a while, I now updated to 8.4, linux OS, 64bit. Installation and testing of petsc 3.5.3 went fine but i am struggling with a simple test case in combination with the new feap:

A row of 500 elements, calculated in transient with a surface pressure at one end. The example is attached and runs fine in serial. When trying in parallel, everytime i get a segmentation violation. also i managed to see the following:

/home/cs/FEAP84/petsc-3.5.3/src/mat/impls/aij/mpi/mpiaij.c the maximum colum number is exceeded

but, all these errors dont show up, if I exclude the tang,,1 command of the file solve.w, so i guess there is some issue there ...



best, christian

blackbird

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Re: segmentation violation with 500 elements on 8 cpu
« Reply #1 on: March 04, 2015, 03:41:16 AM »
i "fixed" this. error occurs due to wrong petsc-version used. when using petsc3.3-p7 everything seems to work fine