| 0 | program terminated without error. |
| 90 | LBIG is too small. |
| 95 | IVEM or U is too small. |
| 99 | fatal error. |
| >0 | only error messages are printed. |
| >1 | in addition a protocol and the norm of the inputsolution is printed. |
| >2 | in addition the solution is printed on process 1. |