[petsc-users] Issue about matsetvalues when turn off debugging

Jed Brown jedbrown at mcs.anl.gov
Wed Dec 18 17:16:59 CST 2013


Gavin Ge <jianchaoge at gmail.com> writes:

> Hi All:
>
> Hope everyone enjoy a nice holiday. I just got a problem with matsetvalues function when I mute the debugging option. A segmentation violation error jumps out when I set value for the very first element in the matrix. There is no problem for me to run the program when turning on the debugging option. I just want to tune this for better performance. Or is it better to turn on the debugging option? Could anybody help me with this? Thanks!

Run in a debugger and get a stack trace.  You can configure the
non-debug PETSC_ARCH with COPTFLAGS='-O0 -g' to ensure that debugging
symbols are available.
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