Dear Experts,
Trying to use cusolverSpXcsrissymHost, even though in the documentation “csrValA” is mentioned, but it doesn’t show in the parameter list. I’m confused, my question is how can I pass “csr val” to this API?
Thanks,
Peter Han
The key to understanding is reading the first sentence in the documentation:
"This function checks if A has symmetric pattern or not. "
The function is not checking if the matrix is symmetric. The function is checking if the pattern is symmetric. Since we are talking about a sparse matrix representation, this means essentially what is the pattern of the defined non-zero elements. The actual element values are irrelevant for this.
Although csrValA is referenced in the text (because presumably you are talking about a sparse matrix that has an associated array of non-zero elements, and that is how such a CSR formatted matrix should be defined for use by cusparse/cusolver) the csrValA pointer/data is not required for this function.