Hi,

I'm a new user of PETSc and I try to use it with MUMPS functionalities to compute a nullbasis. I wrote a code where I compute 4 times the same nullbasis. It does work well when I run it with several procs but with only one processor I get an error on the 2nd iteration when KSPSetUp is called. Furthermore when it is run with a debugger ( --with-debugging=yes), it works fine with one or several processors. Have you got any idea about why it doesn't work with one processor and no debugger?

Thanks.
Constantin.

PS: You can find the code and the files required to run it enclosed.

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