How to multiply two sparse matrix using cuSparse?

Question

cuSparse only has a function api for multiplying a sparse matrix with a dense matrix. How to do multiply operation for two sparse matrices using cuSparse or any other cuda liberary?

Answer 1

The current version of cuSPARSE (CUDA Toolkit v5.0) supports sparse matrix-sparse matrix multiplications using the cusparse<t>csrgemm functions.

For this routine, compute capability 2.0 or better is needed.

Answer 2

As I commented, the CUSP library is available for matrix multiplication. From the site:

Cusp is a library for sparse linear algebra and graph computations on CUDA. Cusp provides a flexible, high-level interface for manipulating sparse matrices and solving sparse linear systems.