Error while loop on Eigenvalue Problem

General Discussion
1

Hi there,
I try to solve a Eigenvalue problem on a loop with coarser mesh on each step. It works perfectly fine with the Element “P1nc”, but when I use the Element “P3” for example, I get the error

current line = 37
Exec error : arpack error NO_SHIFTS_APPLIED [sd]aupp
– number :3
Exec error : arpack error NO_SHIFTS_APPLIED [sd]aupp
– number :3
err code 8 , mpirank 0

Does anyone know why and how I can fix it?

This is the file:
testest.edp (1.2 KB)

2

This error is very strange it occurs only in P3 element.

to remove
start up loop a 2 no 1

 int n = 10;
 for (int m=2; m<=n; m++){