PARAM, CSTEVAL
Bulk Data Entry Use wall time based cost evaluation for Lanczos steps.
| Parameter | Values | Description |
|---|---|---|
| CSTEVAL | <YES, NO> | This parameter controls
whether to use wall time based cost evaluation to provide the
optimal performance in running Lanczos steps. The wall time based
cost evaluation is a function of system performance, hence it
could be influenced by the system load. Although it rarely
happens, this influence could result in a different number of
Lanczos steps, which could cause the resulting eigenvalues
having a round off difference. In most cases, this small
difference in solution is completely negligible for analysis.
However, it can produce visible differences in optimization runs
or in any solution that is sensitive to the small difference of
the obtained eigenvalues and eigenvectors.
|