[petsc-users] nan after VecDuplicate

[Orxan Shibliyev]

I get a nan for solution vector, 'x' right after VecDuplicate (x, &b)
where, 'b' is a Vec. This happens only with multiple processes while
sequential one works perfectly. I even tried to set 'x' with
VecZeroEntries(x) but didn't help.