Open discussion for MAGMA library (Matrix Algebra on GPU and Multicore Architectures)

Klausb
 Posts: 21
 Joined: Thu Oct 05, 2017 3:04 pm
Post
by Klausb » Thu Oct 19, 2017 10:20 am
Hello,
I tried to export the matrices from my application using the MAGMA export function:
Code: Select all
magma_dwrite_csr_mtx(A, MagmaRowMajor, "sym_matrix_p.mtx", queue);
In any case, a file containing only the header information was created.
File content:
Code: Select all
%%MatrixMarket matrix coordinate real general
40800 40800 203400
What's wrong with my attempt?
Klaus

hartwig anzt
 Posts: 90
 Joined: Tue Sep 02, 2014 5:44 pm
Post
by hartwig anzt » Thu Oct 19, 2017 10:44 am
Klaus,
please always provide the complete code  this makes the analysis much easier.
Thanks, Hartwig

Klausb
 Posts: 21
 Joined: Thu Oct 05, 2017 3:04 pm
Post
by Klausb » Thu Oct 19, 2017 3:18 pm
Here the code section:
Code: Select all
// Initialize MAGMA and create some LA structures.
magma_init();
magma_dopts opts;
magma_queue_t queue;
magma_queue_create( 0, &queue );
magma_d_matrix A={Magma_CSR}, dA={Magma_CSR};
magma_d_matrix b={Magma_CSR}, db={Magma_CSR};
magma_d_matrix x={Magma_CSR}, dx={Magma_CSR};
// get vector size
magma_int_t n = matrix.diag().size();
magma_int_t one = 1; // magma vector number of columns
// Pass the system to MAGMA.
// import rhs
mFoam::import_vector(source, b, queue);
// convert matrix and fill matrix A based on magma_dcsrset( m, m, row, col, val, &A, queue );
mFoam::CSR2MAGMA(matrix, A, queue);
// save the matrix for p or U etc.
if (matrix.symmetric()) {
magma_dwrite_csr_mtx(A, MagmaRowMajor, "sym_matrix_p.mtx", queue); // p
} else {
magma_dwrite_csr_mtx(A, MagmaRowMajor, "asym_matrix_U.mtx", queue); // U etc.
}