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Sparse Direct Solver

Posted: Fri Apr 03, 2015 4:33 pm
by dannnnn
I would like to know which routine is for sparse LU direct solver? I would like to know whether the LU solve under Linear Systems in the documentation can be used for solving sparse matrices? Thank you!

Re: Sparse Direct Solver

Posted: Fri Apr 03, 2015 4:51 pm
by hartwig anzt
The LU is an incomplete LU (ILU) this can be used as a preconditioner for iterative solvers.

Re: Sparse Direct Solver

Posted: Mon Apr 06, 2015 10:46 am
by dannnnn
You mean function magma_dgesv() is ILU? Can I use it as direct solver for sparse matrix?

Re: Sparse Direct Solver

Posted: Tue Apr 14, 2015 12:28 am
by mgates3
No, magma_dgesv is normal LU (direct method) for dense matrices.

For sparse methods, see the routines under Sparse-iter and in Modules > Sparse.
http://icl.cs.utk.edu/projectsfiles/mag ... rsesolvers
http://icl.cs.utk.edu/projectsfiles/mag ... _gesv.html

-mark