Specifies use of the out-of-core eigensolver. Select Y (for yes) or N (for no).
This out-of-core eigensolver is used primarily as a benchmarking and debugging aid. Select Y to automatically run the out-of-core eigensolver on any problem size. Using this solver can take considerably more time than the in-core solver, but always produce the same results.
A problem may be too big to fit into the in-core solver because the capacity is based upon the amount of available extended memory. The out-of-core solver then runs automatically. This parameter does not need to be changed to Y to have this automatic switch occur.