symmetric sparse marix by a dense matrix

utab — Tue, 20 Sep 2011 08:27:14 GMT

Dear all,

I was wondering if there is a routine for the multiplication of a sparse symmetric matrix with a dense matrix. There is

mkl_dcsrmm

however it accepts the general CSR format not the symmetric one. I guess this is not directly possible, however there is a routine which does it for a sparse symmetric matrix and a dense vector, so I could make use of this to generate the columns of the resulting dense matrix in this way. I was wondering what could be the best way to accomplish this task. Since my matrices for the application I work on are symmetric, I was wondering if there are some clever tricks.

Thanks for the advice and best regards,
Umut

Edit: Reading a bit more on the documentation, on the matdescra character array one can specify Symmetric option, does that mean that it extracts the symmetric triplets inside that, I am a bit confused.

symmetric sparse marix by a dense matrix

Sergey_K_Intel1 — Tue, 20 Sep 2011 10:52:55 GMT

Dear Umut,

Like dense BLAS symmetric matrix-matrix multiply, mkl_dcsrmmis able to extract internallythesymmetric triplets but it alsoworks if there is only CSR representation of upper or lower triangle of the matrix.

All the best
Sergey

topic symmetric sparse marix by a dense matrix in Intel® oneAPI Math Kernel Library

symmetric sparse marix by a dense matrix

symmetric sparse marix by a dense matrix