Early in a Block Lanczos solution I am getting a memory error
message during a SplitGraphOrder operation. What can I do about
This error message refers to an operation performed by the METIS
reordering algorithm in the Sparse solver. It uses a lot of memory and
it appears it ran out on this model. A possible workaround is to request
an alternative sorting algorithm, which is slower, but requires less memory.
To request the alternative (undocumented) reordering method use BCSOPT,MMD.