The resulting matrix has something like >>> 119999808*119999808*1.e-6 14,399,953,920.036863
nonzero entries. It is possible that some integer operations are overflowing since C int can only go up to about 4 billion before overflowing. You can building with a different PETSC_ARCH value using the additional ./configure option for PETSc of --with-64-bit-indices and see if the problem is resolved. Barry > On Jun 5, 2017, at 12:37 PM, Kannan, Ramakrishnan <[email protected]> wrote: > > I am running EPS for NHEP on a matrix of size 119999808x119999808 and I am > experiencing the attached trapped. This is a 1D row distributed sparse > uniform random matrix with 1e-6 sparsity over 36 processors. It works fine > for smaller matrices of sizes with 1.2 million x 1.2 million. Let me know if > you are looking for more information. > > -- > Regards, > Ramki > > <slepc.e609742.zip>
