[petsc-users] Segmentatoin fault

[Jed Brown]

丁老师 <ztdepyahoo at 163.com> writes:

> I write a FVM code for the convection diffusion problem on a 2D
> cartesian grid.  the code can run correctly with a grid of
> 720*720. and it use only 26% of the system memory(8G) during its
> running.  

How are you testing the total application memory usage?

> but if i increase the grid to 800*800, it gives me the following
> error? could you please give me some information how to resolve it.
>
>
>
> mpiexec -np 4 ./main
> ===================================================================================
> = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES = EXIT CODE: 11
> = CLEANING UP REMAINING PROCESSES = YOU CAN IGNORE THE BELOW CLEANUP
> MESSAGES
> ===================================================================================
> YOUR APPLICATION TERMINATED WITH THE EXIT STRING: Segmentation fault
> (signal 11) This typically refers to a problem with your application.
> Please see the FAQ page for debugging suggestions
> ztdep at linuxdell:~/Projects/CartesianPFlowingHeat2D-KDE/build> mpiexec
> -np 4 ./main write the grid to Grid.cgns sucessfully
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