how to implement matrix addition calculation

[hoseaaaa]

Hi Professor, I have a simple question
When I use amgcl to solve the problem, I have used mpi to read the two matrices A and B. How to realize the addition calculation of these two matrices?
auto A = std::make_shared<amgcl::mpi::distributed_matrix<DBackend>>( world, std::tie(chunk, ptr_A, col_A, val_A)); auto B = std::make_shared<amgcl::mpi::distributed_matrix<DBackend>>( world, std::tie(chunk, ptr_B, col_B, val_B));

[ddemidov]

Summing of distributed matrices is outside of the library scope. There is an internal implementation that takes matrices as amgcl::backend::csr, so you could copy your local chunks into csr, add them, and use the result to construct the distributed matrix.

[hoseaaaa]

Thanks for your help.i will try it