Can SLEPc handle 1mx1m matrix?

[Barry Smith]

    Yes,

On Nov 29, 2009, at 7:12 PM, Takuya Sekikawa wrote:

> 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
> ---------------------------------------------------------------
>
>