Can SLEPc handle 1mx1m matrix?
Takuya Sekikawa
sekikawa at msi.co.jp
Sun Nov 29 19:12:11 CST 2009
Dear SLEPc/PETSc team,
In past I have made eigenvalue solving program with SLEPc.
At that time matrix size was at most 10000x10000.
(that program is running with no problem)
Now I need to extend it to handle 1,000,000x1,000,1000 matrix.
(100 times larger than before, in row and column each)
Also, over 99% of matrix values are zero. (sparse matrix)
and I don't need all the eigenvalues/vectors.
I only need several large magnitudes.
I think I could handle it with indirect method like KRYLOVSCHUR or
LANCZOS, plus using MPI, but I'm not sure if I can.
Can SLEPc handle these quite large matrix?
Thanks,
Takuya
---------------------------------------------------------------
Takuya Sekikawa
Mathematical Systems, Inc
sekikawa at msi.co.jp
---------------------------------------------------------------
More information about the petsc-users
mailing list