MAGMA  1.6.1
Matrix Algebra for GPU and Multicore Architectures
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single precision

Functions

magma_int_t magma_s_precond (magma_s_sparse_matrix A, magma_s_vector b, magma_s_vector *x, magma_s_preconditioner *precond, magma_queue_t queue)
 For a given input matrix A and vectors x, y and the preconditioner parameters, the respective preconditioner is chosen. More...
 
magma_int_t magma_s_precondsetup (magma_s_sparse_matrix A, magma_s_vector b, magma_s_preconditioner *precond, magma_queue_t queue)
 For a given input matrix A and vectors x, y and the preconditioner parameters, the respective preconditioner is preprocessed. More...
 
magma_int_t magma_s_applyprecond (magma_s_sparse_matrix A, magma_s_vector b, magma_s_vector *x, magma_s_preconditioner *precond, magma_queue_t queue)
 For a given input matrix A and vectors x, y and the preconditioner parameters, the respective preconditioner is applied. More...
 
magma_int_t magma_s_applyprecond_left (magma_s_sparse_matrix A, magma_s_vector b, magma_s_vector *x, magma_s_preconditioner *precond, magma_queue_t queue)
 For a given input matrix A and vectors x, y and the preconditioner parameters, the respective left preconditioner is applied. More...
 
magma_int_t magma_s_applyprecond_right (magma_s_sparse_matrix A, magma_s_vector b, magma_s_vector *x, magma_s_preconditioner *precond, magma_queue_t queue)
 For a given input matrix A and vectors x, y and the preconditioner parameters, the respective right-preconditioner is applied. More...
 
magma_int_t magma_s_solver (magma_s_sparse_matrix A, magma_s_vector b, magma_s_vector *x, magma_sopts *zopts, magma_queue_t queue)
 ALlows the user to choose a solver. More...
 
magma_int_t magma_sapplycustomprecond_l (magma_s_vector b, magma_s_vector *x, magma_s_preconditioner *precond, magma_queue_t queue)
 This is an interface to the left solve for any custom preconditioner. More...
 
magma_int_t magma_sapplycustomprecond_r (magma_s_vector b, magma_s_vector *x, magma_s_preconditioner *precond, magma_queue_t queue)
 This is an interface to the right solve for any custom preconditioner. More...
 
magma_int_t magma_sresidual (magma_s_sparse_matrix A, magma_s_vector b, magma_s_vector x, float *res, magma_queue_t queue)
 Computes the residual ||b-Ax|| for a solution approximation x. More...
 
magma_int_t magma_ccsrsplit (magma_int_t bsize, magma_c_sparse_matrix A, magma_c_sparse_matrix *D, magma_c_sparse_matrix *R, magma_queue_t queue)
 Splits a CSR matrix into two matrices, one containing the diagonal blocks with the diagonal element stored first, one containing the rest of the original matrix. More...
 
magma_int_t magma_dcsrsplit (magma_int_t bsize, magma_d_sparse_matrix A, magma_d_sparse_matrix *D, magma_d_sparse_matrix *R, magma_queue_t queue)
 Splits a CSR matrix into two matrices, one containing the diagonal blocks with the diagonal element stored first, one containing the rest of the original matrix. More...
 
magma_int_t magma_s_vfree (magma_s_vector *x, magma_queue_t queue)
 Free the memory of a magma_s_vector. More...
 
magma_int_t magma_s_mfree (magma_s_sparse_matrix *A, magma_queue_t queue)
 Free the memory of a magma_s_sparse_matrix. More...
 
magma_int_t magma_s_vinit (magma_s_vector *x, magma_location_t mem_loc, magma_int_t num_rows, float values, magma_queue_t queue)
 Initialize a magma_s_vector. More...
 
magma_int_t magma_srowentries (magma_s_sparse_matrix *A, magma_queue_t queue)
 Checks the maximal number of nonzeros in a row of matrix A. More...
 
magma_int_t magma_sdiameter (magma_s_sparse_matrix *A, magma_queue_t queue)
 Computes the diameter of a sparse matrix and stores the value in diameter. More...
 
magma_int_t magma_s_vvisu (magma_s_vector x, magma_int_t offset, magma_int_t visulen, magma_queue_t queue)
 Visualizes part of a vector of type magma_s_vector. More...
 
magma_int_t magma_s_vread (magma_s_vector *x, magma_int_t length, char *filename, magma_queue_t queue)
 Reads in a float vector of length "length". More...
 
magma_int_t magma_s_vspread (magma_s_vector *x, const char *filename, magma_queue_t queue)
 Reads in a sparse vector-block stored in COO format. More...
 
magma_int_t magma_scsrsplit (magma_int_t bsize, magma_s_sparse_matrix A, magma_s_sparse_matrix *D, magma_s_sparse_matrix *R, magma_queue_t queue)
 Splits a CSR matrix into two matrices, one containing the diagonal blocks with the diagonal element stored first, one containing the rest of the original matrix. More...
 
magma_int_t magma_s_csr_compressor (float **val, magma_index_t **row, magma_index_t **col, float **valn, magma_index_t **rown, magma_index_t **coln, magma_int_t *n, magma_queue_t queue)
 Helper function to compress CSR containing zero-entries. More...
 
magma_int_t magma_s_mconvert (magma_s_sparse_matrix A, magma_s_sparse_matrix *B, magma_storage_t old_format, magma_storage_t new_format, magma_queue_t queue)
 Converter between different sparse storage formats. More...
 
magma_int_t magma_smcsrcompressor (magma_s_sparse_matrix *A, magma_queue_t queue)
 Removes zeros in a CSR matrix. More...
 
magma_int_t magma_scsrset (magma_int_t m, magma_int_t n, magma_index_t *row, magma_index_t *col, float *val, magma_s_sparse_matrix *A, magma_queue_t queue)
 Passes a CSR matrix to MAGMA. More...
 
magma_int_t magma_scsrget (magma_s_sparse_matrix A, magma_int_t *m, magma_int_t *n, magma_index_t **row, magma_index_t **col, float **val, magma_queue_t queue)
 Passes a MAGMA matrix to CSR structure. More...
 
magma_int_t magma_scsrset_gpu (magma_int_t m, magma_int_t n, magmaIndex_ptr row, magmaIndex_ptr col, magmaFloat_ptr val, magma_s_sparse_matrix *A, magma_queue_t queue)
 Passes a CSR matrix to MAGMA (located on DEV). More...
 
magma_int_t magma_scsrget_gpu (magma_s_sparse_matrix A, magma_int_t *m, magma_int_t *n, magmaIndex_ptr *row, magmaIndex_ptr *col, magmaFloat_ptr *val, magma_queue_t queue)
 Passes a MAGMA matrix to CSR structure (located on DEV). More...
 
magma_int_t magma_smdiff (magma_s_sparse_matrix A, magma_s_sparse_matrix B, real_Double_t *res, magma_queue_t queue)
 Computes the Frobenius norm of the difference between the CSR matrices A and B. More...
 
magma_int_t magma_smgenerator (magma_int_t n, magma_int_t offdiags, magma_index_t *diag_offset, float *diag_vals, magma_s_sparse_matrix *A, magma_queue_t queue)
 Generate a symmetric n x n CSR matrix for a stencil. More...
 
magma_int_t magma_sm_27stencil (magma_int_t n, magma_s_sparse_matrix *A, magma_queue_t queue)
 Generate a 27-point stencil for a 3D FD discretization. More...
 
magma_int_t magma_sm_5stencil (magma_int_t n, magma_s_sparse_matrix *A, magma_queue_t queue)
 Generate a 5-point stencil for a 2D FD discretization. More...
 
magma_int_t read_s_csr_from_binary (magma_int_t *n_row, magma_int_t *n_col, magma_int_t *nnz, float **val, magma_index_t **row, magma_index_t **col, const char *filename, magma_queue_t queue)
 Reads in a matrix stored in coo format from a binary and converts it into CSR format. More...
 
magma_int_t read_s_csr_from_mtx (magma_storage_t *type, magma_location_t *location, magma_int_t *n_row, magma_int_t *n_col, magma_int_t *nnz, float **val, magma_index_t **row, magma_index_t **col, const char *filename, magma_queue_t queue)
 Reads in a matrix stored in coo format from a Matrix Market (.mtx) file and converts it into CSR format. More...
 
magma_int_t write_s_csr_mtx (magma_int_t n_row, magma_int_t n_col, magma_int_t nnz, float **val, magma_index_t **row, magma_index_t **col, magma_order_t MajorType, const char *filename, magma_queue_t queue)
 Writes a CSR matrix to a file using Matrix Market format. More...
 
magma_int_t print_s_csr_mtx (magma_int_t n_row, magma_int_t n_col, magma_int_t nnz, float **val, magma_index_t **row, magma_index_t **col, magma_order_t MajorType, magma_queue_t queue)
 Prints a CSR matrix in Matrix Market format. More...
 
magma_int_t print_s_csr (magma_int_t n_row, magma_int_t n_col, magma_int_t nnz, float **val, magma_index_t **row, magma_index_t **col, magma_queue_t queue)
 Prints a CSR matrix in CSR format. More...
 
magma_int_t magma_s_mvisu (magma_s_sparse_matrix A, magma_queue_t queue)
 Prints a sparse matrix in CSR format. More...
 
magma_int_t magma_s_csr_mtx (magma_s_sparse_matrix *A, const char *filename, magma_queue_t queue)
 Reads in a matrix stored in coo format from a Matrix Market (.mtx) file and converts it into CSR format. More...
 
magma_int_t magma_s_csr_mtxsymm (magma_s_sparse_matrix *A, const char *filename, magma_queue_t queue)
 Reads in a SYMMETRIC matrix stored in coo format from a Matrix Market (.mtx) file and converts it into CSR format. More...
 
magma_int_t magma_smlumerge (magma_s_sparse_matrix L, magma_s_sparse_matrix U, magma_s_sparse_matrix *A, magma_queue_t queue)
 Takes an strictly lower triangular matrix L and an upper triangular matrix U and merges them into a matrix A containing the upper and lower triangular parts. More...
 
magma_int_t magma_smscale (magma_s_sparse_matrix *A, magma_scale_t scaling, magma_queue_t queue)
 Scales a matrix. More...
 
magma_int_t magma_smdiagadd (magma_s_sparse_matrix *A, float add, magma_queue_t queue)
 Adds a multiple of the Identity matrix to a matrix: A = A+add * I. More...
 
magma_int_t magma_s_mtransfer (magma_s_sparse_matrix A, magma_s_sparse_matrix *B, magma_location_t src, magma_location_t dst, magma_queue_t queue)
 Copies a matrix from memory location src to memory location dst. More...
 
magma_int_t s_transpose_csr (magma_int_t n_rows, magma_int_t n_cols, magma_int_t nnz, float *val, magma_index_t *row, magma_index_t *col, magma_int_t *new_n_rows, magma_int_t *new_n_cols, magma_int_t *new_nnz, float **new_val, magma_index_t **new_row, magma_index_t **new_col, magma_queue_t queue)
 Transposes a matrix stored in CSR format. More...
 
magma_int_t magma_s_mtranspose (magma_s_sparse_matrix A, magma_s_sparse_matrix *B, magma_queue_t queue)
 Interface to cuSPARSE transpose. More...
 
magma_int_t magma_s_cucsrtranspose (magma_s_sparse_matrix A, magma_s_sparse_matrix *B, magma_queue_t queue)
 Helper function to transpose CSR matrix. More...
 
magma_int_t magma_ssolverinfo (magma_s_solver_par *solver_par, magma_s_preconditioner *precond_par, magma_queue_t queue)
 Prints information about a previously called solver. More...
 
magma_int_t magma_ssolverinfo_free (magma_s_solver_par *solver_par, magma_s_preconditioner *precond_par, magma_queue_t queue)
 Frees any memory assocoiated with the verbose mode of solver_par. More...
 
magma_int_t magma_ssolverinfo_init (magma_s_solver_par *solver_par, magma_s_preconditioner *precond_par, magma_queue_t queue)
 Initializes all solver and preconditioner parameters. More...
 
magma_int_t magma_seigensolverinfo_init (magma_s_solver_par *solver_par, magma_queue_t queue)
 Initializes space for eigensolvers. More...
 
magma_int_t magma_sparse_opts (int argc, char **argv, magma_sopts *opts, int *matrices, magma_queue_t queue)
 Parses input options for a solver. More...
 
magma_int_t magma_svset (magma_int_t m, magma_int_t n, float *val, magma_s_vector *v, magma_queue_t queue)
 Passes a vector to MAGMA. More...
 
magma_int_t magma_svget (magma_s_vector v, magma_int_t *m, magma_int_t *n, float **val, magma_queue_t queue)
 Passes a MAGMA vector back. More...
 
magma_int_t magma_svset_dev (magma_int_t m, magma_int_t n, magmaFloat_ptr val, magma_s_vector *v, magma_queue_t queue)
 Passes a vector to MAGMA (located on DEV). More...
 
magma_int_t magma_svget_dev (magma_s_vector v, magma_int_t *m, magma_int_t *n, magmaFloat_ptr *val, magma_queue_t queue)
 Passes a MAGMA vector back (located on DEV). More...
 
magma_int_t magma_s_vtransfer (magma_s_vector x, magma_s_vector *y, magma_location_t src, magma_location_t dst, magma_queue_t queue)
 Copies a vector from memory location src to memory location dst. More...
 
magma_int_t magma_svtranspose (magma_s_vector x, magma_s_vector *y, magma_queue_t queue)
 Transposes a vector from col to row major and vice versa. More...
 
magma_int_t magma_zcsrsplit (magma_int_t bsize, magma_z_sparse_matrix A, magma_z_sparse_matrix *D, magma_z_sparse_matrix *R, magma_queue_t queue)
 Splits a CSR matrix into two matrices, one containing the diagonal blocks with the diagonal element stored first, one containing the rest of the original matrix. More...
 
magma_int_t magma_s_spmv_shift (float alpha, magma_s_sparse_matrix A, float lambda, magma_s_vector x, float beta, magma_int_t offset, magma_int_t blocksize, magma_index_t *add_rows, magma_s_vector y, magma_queue_t queue)
 For a given input matrix A and vectors x, y and scalars alpha, beta the wrapper determines the suitable SpMV computing y = alpha * ( A - lambda I ) * x + beta * y. More...
 
magma_int_t magma_smcsrcompressor_gpu (magma_s_sparse_matrix *A, magma_queue_t queue)
 Removes zeros in a CSR matrix. More...
 
magma_int_t magma_slobpcg_res (magma_int_t num_rows, magma_int_t num_vecs, magmaFloat_ptr evalues, magmaFloat_ptr X, magmaFloat_ptr R, magmaFloat_ptr res, magma_queue_t queue)
 This routine computes for Block-LOBPCG, the set of residuals. More...
 
magma_int_t magma_slobpcg_shift (magma_int_t num_rows, magma_int_t num_vecs, magma_int_t shift, magmaFloat_ptr x, magma_queue_t queue)
 For a Block-LOBPCG, the set of residuals (entries consecutive in memory) shrinks and the vectors are shifted in case shift residuals drop below threshold. More...
 
magma_int_t magma_scopyscale (int n, int k, magmaFloat_ptr r, magmaFloat_ptr v, magmaFloat_ptr skp, magma_queue_t queue)
 Computes the correction term of the pipelined GMRES according to P. More...
 

Detailed Description

Function Documentation

magma_int_t magma_ccsrsplit ( magma_int_t  bsize,
magma_c_sparse_matrix  A,
magma_c_sparse_matrix *  D,
magma_c_sparse_matrix *  R,
magma_queue_t  queue 
)

Splits a CSR matrix into two matrices, one containing the diagonal blocks with the diagonal element stored first, one containing the rest of the original matrix.

Parameters
[in]bsizemagma_int_t size of the diagonal blocks
[in]Amagma_c_sparse_matrix CSR input matrix
[out]Dmagma_c_sparse_matrix* CSR matrix containing diagonal blocks
[out]Rmagma_c_sparse_matrix* CSR matrix containing rest
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_dcsrsplit ( magma_int_t  bsize,
magma_d_sparse_matrix  A,
magma_d_sparse_matrix *  D,
magma_d_sparse_matrix *  R,
magma_queue_t  queue 
)

Splits a CSR matrix into two matrices, one containing the diagonal blocks with the diagonal element stored first, one containing the rest of the original matrix.

Parameters
[in]bsizemagma_int_t size of the diagonal blocks
[in]Amagma_d_sparse_matrix CSR input matrix
[out]Dmagma_d_sparse_matrix* CSR matrix containing diagonal blocks
[out]Rmagma_d_sparse_matrix* CSR matrix containing rest
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_applyprecond ( magma_s_sparse_matrix  A,
magma_s_vector  b,
magma_s_vector *  x,
magma_s_preconditioner *  precond,
magma_queue_t  queue 
)

For a given input matrix A and vectors x, y and the preconditioner parameters, the respective preconditioner is applied.

E.g. for Jacobi: the scaling-vetor, for ILU the triangular solves.

Parameters
[in]Amagma_s_sparse_matrix sparse matrix A
[in]bmagma_s_vector input vector b
[in,out]xmagma_s_vector* output vector x
[in]precondmagma_s_preconditioner preconditioner
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_applyprecond_left ( magma_s_sparse_matrix  A,
magma_s_vector  b,
magma_s_vector *  x,
magma_s_preconditioner *  precond,
magma_queue_t  queue 
)

For a given input matrix A and vectors x, y and the preconditioner parameters, the respective left preconditioner is applied.

E.g. for Jacobi: the scaling-vetor, for ILU the left triangular solve.

Parameters
[in]Amagma_s_sparse_matrix sparse matrix A
[in]bmagma_s_vector input vector b
[in,out]xmagma_s_vector* output vector x
[in]precondmagma_s_preconditioner preconditioner
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_applyprecond_right ( magma_s_sparse_matrix  A,
magma_s_vector  b,
magma_s_vector *  x,
magma_s_preconditioner *  precond,
magma_queue_t  queue 
)

For a given input matrix A and vectors x, y and the preconditioner parameters, the respective right-preconditioner is applied.

E.g. for Jacobi: the scaling-vetor, for ILU the right triangular solve.

Parameters
[in]Amagma_s_sparse_matrix sparse matrix A
[in]bmagma_s_vector input vector b
[in,out]xmagma_s_vector* output vector x
[in]precondmagma_s_preconditioner preconditioner
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_csr_compressor ( float **  val,
magma_index_t **  row,
magma_index_t **  col,
float **  valn,
magma_index_t **  rown,
magma_index_t **  coln,
magma_int_t *  n,
magma_queue_t  queue 
)

Helper function to compress CSR containing zero-entries.

Parameters
[in]valfloat** input val pointer to compress
[in]rowmagma_int_t** input row pointer to modify
[in]colmagma_int_t** input col pointer to compress
[in]valnfloat** output val pointer
[out]rownmagma_int_t** output row pointer
[out]colnmagma_int_t** output col pointer
[out]nmagma_int_t* number of rows in matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_csr_mtx ( magma_s_sparse_matrix *  A,
const char *  filename,
magma_queue_t  queue 
)

Reads in a matrix stored in coo format from a Matrix Market (.mtx) file and converts it into CSR format.

It duplicates the off-diagonal entries in the symmetric case.

Parameters
[out]Amagma_s_sparse_matrix* matrix in magma sparse matrix format
[in]filenameconst char* filname of the mtx matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_csr_mtxsymm ( magma_s_sparse_matrix *  A,
const char *  filename,
magma_queue_t  queue 
)

Reads in a SYMMETRIC matrix stored in coo format from a Matrix Market (.mtx) file and converts it into CSR format.

It does not duplicate the off-diagonal entries!

Parameters
[out]Amagma_s_sparse_matrix* matrix in magma sparse matrix format
[in]filenameconst char* filname of the mtx matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_cucsrtranspose ( magma_s_sparse_matrix  A,
magma_s_sparse_matrix *  B,
magma_queue_t  queue 
)

Helper function to transpose CSR matrix.

Using the CUSPARSE CSR2CSC function.

Parameters
[in]Amagma_s_sparse_matrix input matrix (CSR)
[out]Bmagma_s_sparse_matrix* output matrix (CSR)
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_mconvert ( magma_s_sparse_matrix  A,
magma_s_sparse_matrix *  B,
magma_storage_t  old_format,
magma_storage_t  new_format,
magma_queue_t  queue 
)

Converter between different sparse storage formats.

Parameters
[in]Amagma_s_sparse_matrix sparse matrix A
[out]Bmagma_s_sparse_matrix* copy of A in new format
[in]old_formatmagma_storage_t original storage format
[in]new_formatmagma_storage_t new storage format
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_mfree ( magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Free the memory of a magma_s_sparse_matrix.

Parameters
[in,out]Amagma_s_sparse_matrix* matrix to free
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_mtransfer ( magma_s_sparse_matrix  A,
magma_s_sparse_matrix *  B,
magma_location_t  src,
magma_location_t  dst,
magma_queue_t  queue 
)

Copies a matrix from memory location src to memory location dst.

Parameters
[in]Amagma_s_sparse_matrix sparse matrix A
[out]Bmagma_s_sparse_matrix* copy of A
[in]srcmagma_location_t original location A
[in]dstmagma_location_t location of the copy of A
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_mtranspose ( magma_s_sparse_matrix  A,
magma_s_sparse_matrix *  B,
magma_queue_t  queue 
)

Interface to cuSPARSE transpose.

Parameters
[in]Amagma_s_sparse_matrix input matrix (CSR)
[out]Bmagma_s_sparse_matrix* output matrix (CSR)
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_mvisu ( magma_s_sparse_matrix  A,
magma_queue_t  queue 
)

Prints a sparse matrix in CSR format.

Parameters
[in]Amagma_s_sparse_matrix sparse matrix in Magma_CSR format
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_precond ( magma_s_sparse_matrix  A,
magma_s_vector  b,
magma_s_vector *  x,
magma_s_preconditioner *  precond,
magma_queue_t  queue 
)

For a given input matrix A and vectors x, y and the preconditioner parameters, the respective preconditioner is chosen.

It approximates x for A x = y.

Parameters
[in]Amagma_s_sparse_matrix sparse matrix A
[in]bmagma_s_vector input vector b
[in]xmagma_s_vector* output vector x
[in,out]precondmagma_s_preconditioner preconditioner
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_precondsetup ( magma_s_sparse_matrix  A,
magma_s_vector  b,
magma_s_preconditioner *  precond,
magma_queue_t  queue 
)

For a given input matrix A and vectors x, y and the preconditioner parameters, the respective preconditioner is preprocessed.

E.g. for Jacobi: the scaling-vetor, for ILU the factorization.

Parameters
[in]Amagma_s_sparse_matrix sparse matrix A
[in]bmagma_s_vector input vector y
[in,out]precondmagma_s_preconditioner preconditioner
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_solver ( magma_s_sparse_matrix  A,
magma_s_vector  b,
magma_s_vector *  x,
magma_sopts *  zopts,
magma_queue_t  queue 
)

ALlows the user to choose a solver.

Parameters
[in]Amagma_s_sparse_matrix sparse matrix A
[in]bmagma_s_vector input vector b
[in]xmagma_s_vector* output vector x
[in]zoptsmagma_sopts options for solver and preconditioner
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_spmv_shift ( float  alpha,
magma_s_sparse_matrix  A,
float  lambda,
magma_s_vector  x,
float  beta,
magma_int_t  offset,
magma_int_t  blocksize,
magma_index_t *  add_rows,
magma_s_vector  y,
magma_queue_t  queue 
)

For a given input matrix A and vectors x, y and scalars alpha, beta the wrapper determines the suitable SpMV computing y = alpha * ( A - lambda I ) * x + beta * y.

Parameters
alphafloat scalar alpha
Amagma_s_sparse_matrix sparse matrix A
lambdafloat scalar lambda
xmagma_s_vector input vector x
betafloat scalar beta
offsetmagma_int_t in case not the main diagonal is scaled
blocksizemagma_int_t in case of processing multiple vectors
add_rowsmagma_int_t* in case the matrixpowerskernel is used
ymagma_s_vector output vector y
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_vfree ( magma_s_vector *  x,
magma_queue_t  queue 
)

Free the memory of a magma_s_vector.

Parameters
i,out]x magma_s_vector* vector to free
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_vinit ( magma_s_vector *  x,
magma_location_t  mem_loc,
magma_int_t  num_rows,
float  values,
magma_queue_t  queue 
)

Initialize a magma_s_vector.

Parameters
[out]xmagma_s_vector* vector to initialize
[in]mem_locmagma_location_t memory for vector
[in]num_rowsmagma_int_t desired length of vector
[in]valuesfloat entries in vector
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_vread ( magma_s_vector *  x,
magma_int_t  length,
char *  filename,
magma_queue_t  queue 
)

Reads in a float vector of length "length".

Parameters
[out]xmagma_s_vector * vector to read in
[in]lengthmagma_int_t length of vector
[in]filenamechar* file where vector is stored
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_vspread ( magma_s_vector *  x,
const char *  filename,
magma_queue_t  queue 
)

Reads in a sparse vector-block stored in COO format.

Parameters
[out]xmagma_s_vector * vector to read in
[in]filenamechar* file where vector is stored
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_vtransfer ( magma_s_vector  x,
magma_s_vector *  y,
magma_location_t  src,
magma_location_t  dst,
magma_queue_t  queue 
)

Copies a vector from memory location src to memory location dst.

Parameters
[in]xmagma_s_vector vector x
[out]ymagma_s_vector* copy of x
[in]srcmagma_location_t original location x
[in]dstmagma_location_t location of the copy of x
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_s_vvisu ( magma_s_vector  x,
magma_int_t  offset,
magma_int_t  visulen,
magma_queue_t  queue 
)

Visualizes part of a vector of type magma_s_vector.

With input vector x , offset, visulen, the entries offset - (offset + visulen) of x are visualized.

Parameters
[in]xmagma_s_vector vector to visualize
[in]offsetmagma_int_t start inex of visualization
[in]visulenmagma_int_t number of entries to visualize
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_sapplycustomprecond_l ( magma_s_vector  b,
magma_s_vector *  x,
magma_s_preconditioner *  precond,
magma_queue_t  queue 
)

This is an interface to the left solve for any custom preconditioner.

It should compute x = FUNCTION(b) The vectors are located on the device.

Parameters
[in]bmagma_s_vector RHS
[in,out]xmagma_s_vector* vector to precondition
[in,out]precondmagma_s_preconditioner* preconditioner parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_sapplycustomprecond_r ( magma_s_vector  b,
magma_s_vector *  x,
magma_s_preconditioner *  precond,
magma_queue_t  queue 
)

This is an interface to the right solve for any custom preconditioner.

It should compute x = FUNCTION(b) The vectors are located on the device.

Parameters
[in]bmagma_s_vector RHS
[in,out]xmagma_s_vector* vector to precondition
[in,out]precondmagma_s_preconditioner* preconditioner parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_scopyscale ( int  n,
int  k,
magmaFloat_ptr  r,
magmaFloat_ptr  v,
magmaFloat_ptr  skp,
magma_queue_t  queue 
)

Computes the correction term of the pipelined GMRES according to P.

Ghysels and scales and copies the new search direction

Returns the vector v = r/ ( skp[k] - (sum_i=1^k skp[i]^2) ) .

Parameters
[in]nint length of v_i
[in]kint

skp entries v_i^T * r ( without r )

Parameters
[in]rmagmaFloat_ptr vector of length n
[in]vmagmaFloat_ptr vector of length n
[in]skpmagmaFloat_ptr array of parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_scsrget ( magma_s_sparse_matrix  A,
magma_int_t *  m,
magma_int_t *  n,
magma_index_t **  row,
magma_index_t **  col,
float **  val,
magma_queue_t  queue 
)

Passes a MAGMA matrix to CSR structure.

Parameters
[in]Amagma_s_sparse_matrix magma sparse matrix in CSR format
[out]mmagma_int_t number of rows
[out]nmagma_int_t number of columns
[out]rowmagma_index_t* row pointer
[out]colmagma_index_t* column indices
[out]valfloat* array containing matrix entries
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_scsrget_gpu ( magma_s_sparse_matrix  A,
magma_int_t *  m,
magma_int_t *  n,
magmaIndex_ptr *  row,
magmaIndex_ptr *  col,
magmaFloat_ptr *  val,
magma_queue_t  queue 
)

Passes a MAGMA matrix to CSR structure (located on DEV).

Parameters
[in]Amagma_s_sparse_matrix magma sparse matrix in CSR format
[out]mmagma_int_t number of rows
[out]nmagma_int_t number of columns
[out]rowmagmaIndex_ptr row pointer
[out]colmagmaIndex_ptr column indices
[out]valmagmaFloat_ptr array containing matrix entries
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_scsrset ( magma_int_t  m,
magma_int_t  n,
magma_index_t *  row,
magma_index_t *  col,
float *  val,
magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Passes a CSR matrix to MAGMA.

Parameters
[in]mmagma_int_t number of rows
[in]nmagma_int_t number of columns
[in]rowmagma_index_t* row pointer
[in]colmagma_index_t* column indices
[in]valfloat* array containing matrix entries
[out]Amagma_s_sparse_matrix* matrix in magma sparse matrix format
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_scsrset_gpu ( magma_int_t  m,
magma_int_t  n,
magmaIndex_ptr  row,
magmaIndex_ptr  col,
magmaFloat_ptr  val,
magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Passes a CSR matrix to MAGMA (located on DEV).

Parameters
[in]mmagma_int_t number of rows
[in]nmagma_int_t number of columns
[in]rowmagmaIndex_ptr row pointer
[in]colmagmaIndex_ptr column indices
[in]valmagmaFloat_ptr array containing matrix entries
[out]Amagma_s_sparse_matrix* matrix in magma sparse matrix format
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_scsrsplit ( magma_int_t  bsize,
magma_s_sparse_matrix  A,
magma_s_sparse_matrix *  D,
magma_s_sparse_matrix *  R,
magma_queue_t  queue 
)

Splits a CSR matrix into two matrices, one containing the diagonal blocks with the diagonal element stored first, one containing the rest of the original matrix.

Parameters
[in]bsizemagma_int_t size of the diagonal blocks
[in]Amagma_s_sparse_matrix CSR input matrix
[out]Dmagma_s_sparse_matrix* CSR matrix containing diagonal blocks
[out]Rmagma_s_sparse_matrix* CSR matrix containing rest
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_sdiameter ( magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Computes the diameter of a sparse matrix and stores the value in diameter.

Parameters
[in,out]Amagma_s_sparse_matrix* sparse matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_seigensolverinfo_init ( magma_s_solver_par *  solver_par,
magma_queue_t  queue 
)

Initializes space for eigensolvers.

Parameters
[in,out]solver_parmagma_s_solver_par* structure containing all solver information
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_slobpcg_res ( magma_int_t  num_rows,
magma_int_t  num_vecs,
magmaFloat_ptr  evalues,
magmaFloat_ptr  X,
magmaFloat_ptr  R,
magmaFloat_ptr  res,
magma_queue_t  queue 
)

This routine computes for Block-LOBPCG, the set of residuals.

R = Ax - x evalues It replaces: for(int i=0; i < n; i++){ magma_saxpy(m, MAGMA_S_MAKE(-evalues[i],0),blockX+i*m,1,blockR+i*m,1); } The memory layout of x is:

/ x1[0] x2[0] x3[0] \
| x1[1] x2[1] x3[1] |

x = | x1[2] x2[2] x3[2] | = x1[0] x1[1] x1[2] x1[3] x1[4] x2[0] x2[1] . | x1[3] x2[3] x3[3] | \ x1[4] x2[4] x3[4] /

Parameters
[in]num_rowsmagma_int_t number of rows
[in]num_vecsmagma_int_t number of vectors
[in]evaluesmagmaFloat_ptr array of eigenvalues/approximations
[in]XmagmaFloat_ptr block of eigenvector approximations
[in]RmagmaFloat_ptr block of residuals
[in]resmagmaFloat_ptr array of residuals
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_slobpcg_shift ( magma_int_t  num_rows,
magma_int_t  num_vecs,
magma_int_t  shift,
magmaFloat_ptr  x,
magma_queue_t  queue 
)

For a Block-LOBPCG, the set of residuals (entries consecutive in memory) shrinks and the vectors are shifted in case shift residuals drop below threshold.

The memory layout of x is:

/ x1[0] x2[0] x3[0] \ | x1[1] x2[1] x3[1] | x = | x1[2] x2[2] x3[2] | = x1[0] x2[0] x3[0] x1[1] x2[1] x3[1] x1[2] . | x1[3] x2[3] x3[3] | \ x1[4] x2[4] x3[4] /

Parameters
[in]num_rowsmagma_int_t number of rows
[in]num_vecsmagma_int_t number of vectors
[in]shiftmagma_int_t shift number
in/out]x magmaFloat_ptr input/output vector x
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_sm_27stencil ( magma_int_t  n,
magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Generate a 27-point stencil for a 3D FD discretization.

Parameters
[in]nmagma_int_t number of rows
[out]Amagma_s_sparse_matrix* matrix to generate
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_sm_5stencil ( magma_int_t  n,
magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Generate a 5-point stencil for a 2D FD discretization.

Parameters
[in]nmagma_int_t number of rows
[out]Amagma_s_sparse_matrix* matrix to generate
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_smcsrcompressor ( magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Removes zeros in a CSR matrix.

Parameters
[in,out]Amagma_s_sparse_matrix* input/output matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_smcsrcompressor_gpu ( magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Removes zeros in a CSR matrix.

This is a GPU implementation of the CSR compressor.

Parameters
Amagma_s_sparse_matrix* input/output matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_smdiagadd ( magma_s_sparse_matrix *  A,
float  add,
magma_queue_t  queue 
)

Adds a multiple of the Identity matrix to a matrix: A = A+add * I.

Parameters
[in,out]Amagma_s_sparse_matrix* input/output matrix
[in]addfloat scaling for the identity matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_smdiff ( magma_s_sparse_matrix  A,
magma_s_sparse_matrix  B,
real_Double_t *  res,
magma_queue_t  queue 
)

Computes the Frobenius norm of the difference between the CSR matrices A and B.

They do not need to share the same sparsity pattern!

   res = ||A-B||_F = sqrt( sum_ij (A_ij-B_ij)^2 )
Parameters
[in]Amagma_s_sparse_matrix sparse matrix in CSR
[in]Bmagma_s_sparse_matrix sparse matrix in CSR
[out]resreal_Double_t* residual
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_smgenerator ( magma_int_t  n,
magma_int_t  offdiags,
magma_index_t *  diag_offset,
float *  diag_vals,
magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Generate a symmetric n x n CSR matrix for a stencil.

Parameters
[in]nmagma_int_t number of rows
[in]offdiagsmagma_int_t number of offdiagonals
[in]diag_offsetmagma_int_t* array containing the offsets
                            (length offsets+1)
[in]diag_valsfloat* array containing the values
                            (length offsets+1)
[out]Amagma_s_sparse_matrix* matrix to generate
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_smlumerge ( magma_s_sparse_matrix  L,
magma_s_sparse_matrix  U,
magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Takes an strictly lower triangular matrix L and an upper triangular matrix U and merges them into a matrix A containing the upper and lower triangular parts.

Parameters
[in]Lmagma_s_sparse_matrix input strictly lower triangular matrix L
[in]Umagma_s_sparse_matrix input upper triangular matrix U
[out]Amagma_s_sparse_matrix* output matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_smscale ( magma_s_sparse_matrix *  A,
magma_scale_t  scaling,
magma_queue_t  queue 
)

Scales a matrix.

Parameters
[in,out]Amagma_s_sparse_matrix* input/output matrix
[in]scalingmagma_scale_t scaling type (unit rownorm / unit diagonal)
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_sparse_opts ( int  argc,
char **  argv,
magma_sopts *  opts,
int *  matrices,
magma_queue_t  queue 
)

Parses input options for a solver.

Parameters
[in]argcint command line input
[in]argvchar** command line input
[in,out]optsmagma_sopts * magma solver options
[out]matricesint counter how many linear systems to process
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_sresidual ( magma_s_sparse_matrix  A,
magma_s_vector  b,
magma_s_vector  x,
float *  res,
magma_queue_t  queue 
)

Computes the residual ||b-Ax|| for a solution approximation x.

Parameters
[in]Amagma_s_sparse_matrix input matrix A
[in]bmagma_s_vector RHS b
[in]xmagma_s_vector solution approximation
[out]resfloat* return residual
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_srowentries ( magma_s_sparse_matrix *  A,
magma_queue_t  queue 
)

Checks the maximal number of nonzeros in a row of matrix A.

Inserts the data into max_nnz_row.

Parameters
[in,out]Amagma_s_sparse_matrix* sparse matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_ssolverinfo ( magma_s_solver_par *  solver_par,
magma_s_preconditioner *  precond_par,
magma_queue_t  queue 
)

Prints information about a previously called solver.

Parameters
[in]solver_parmagma_s_solver_par* structure containing all solver information
[in,out]precond_parmagma_s_preconditioner* structure containing all preconditioner information
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_ssolverinfo_free ( magma_s_solver_par *  solver_par,
magma_s_preconditioner *  precond_par,
magma_queue_t  queue 
)

Frees any memory assocoiated with the verbose mode of solver_par.

The other values are set to default.

Parameters
[in,out]solver_parmagma_s_solver_par* structure containing all solver information
[in,out]precond_parmagma_s_preconditioner* structure containing all preconditioner information
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_ssolverinfo_init ( magma_s_solver_par *  solver_par,
magma_s_preconditioner *  precond_par,
magma_queue_t  queue 
)

Initializes all solver and preconditioner parameters.

Parameters
[in,out]solver_parmagma_s_solver_par* structure containing all solver information
[in,out]precond_parmagma_s_preconditioner* structure containing all preconditioner information
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_svget ( magma_s_vector  v,
magma_int_t *  m,
magma_int_t *  n,
float **  val,
magma_queue_t  queue 
)

Passes a MAGMA vector back.

Parameters
[in]vmagma_s_vector magma vector
[out]mmagma_int_t number of rows
[out]nmagma_int_t number of columns
[out]valfloat* array containing vector entries
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_svget_dev ( magma_s_vector  v,
magma_int_t *  m,
magma_int_t *  n,
magmaFloat_ptr *  val,
magma_queue_t  queue 
)

Passes a MAGMA vector back (located on DEV).

Parameters
[in]vmagma_s_vector magma vector
[out]mmagma_int_t number of rows
[out]nmagma_int_t number of columns
[out]valmagmaFloat_ptr array containing vector entries
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_svset ( magma_int_t  m,
magma_int_t  n,
float *  val,
magma_s_vector *  v,
magma_queue_t  queue 
)

Passes a vector to MAGMA.

Parameters
[in]mmagma_int_t number of rows
[in]nmagma_int_t number of columns
[in]valfloat* array containing vector entries
[out]vmagma_s_vector* magma vector
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_svset_dev ( magma_int_t  m,
magma_int_t  n,
magmaFloat_ptr  val,
magma_s_vector *  v,
magma_queue_t  queue 
)

Passes a vector to MAGMA (located on DEV).

Parameters
[in]mmagma_int_t number of rows
[in]nmagma_int_t number of columns
[in]valmagmaFloat_ptr array containing vector entries
[out]vmagma_s_vector* magma vector
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_svtranspose ( magma_s_vector  x,
magma_s_vector *  y,
magma_queue_t  queue 
)

Transposes a vector from col to row major and vice versa.

Parameters
[in]xmagma_s_vector input vector
[out]ymagma_s_vector* output vector
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zcsrsplit ( magma_int_t  bsize,
magma_z_sparse_matrix  A,
magma_z_sparse_matrix *  D,
magma_z_sparse_matrix *  R,
magma_queue_t  queue 
)

Splits a CSR matrix into two matrices, one containing the diagonal blocks with the diagonal element stored first, one containing the rest of the original matrix.

Parameters
[in]bsizemagma_int_t size of the diagonal blocks
[in]Amagma_z_sparse_matrix CSR input matrix
[out]Dmagma_z_sparse_matrix* CSR matrix containing diagonal blocks
[out]Rmagma_z_sparse_matrix* CSR matrix containing rest
[in]queuemagma_queue_t Queue to execute in.
magma_int_t print_s_csr ( magma_int_t  n_row,
magma_int_t  n_col,
magma_int_t  nnz,
float **  val,
magma_index_t **  row,
magma_index_t **  col,
magma_queue_t  queue 
)

Prints a CSR matrix in CSR format.

Parameters
[in]n_rowmagma_int_t* number of rows in matrix
[in]n_colmagma_int_t* number of columns in matrix
[in]nnzmagma_int_t* number of nonzeros in matrix
[in]valfloat** value array of CSR
[in]rowmagma_index_t** row pointer of CSR
[in]colmagma_index_t** column indices of CSR
[in]queuemagma_queue_t Queue to execute in.
magma_int_t print_s_csr_mtx ( magma_int_t  n_row,
magma_int_t  n_col,
magma_int_t  nnz,
float **  val,
magma_index_t **  row,
magma_index_t **  col,
magma_order_t  MajorType,
magma_queue_t  queue 
)

Prints a CSR matrix in Matrix Market format.

Parameters
[in]n_rowmagma_int_t* number of rows in matrix
[in]n_colmagma_int_t* number of columns in matrix
[in]nnzmagma_int_t* number of nonzeros in matrix
[in]valfloat** value array of CSR
[in]rowmagma_index_t** row pointer of CSR
[in]colmagma_index_t** column indices of CSR
[in]MajorTypemagma_index_t Row or Column sort default: 0 = RowMajor, 1 = ColMajor
[in]queuemagma_queue_t Queue to execute in.
magma_int_t read_s_csr_from_binary ( magma_int_t *  n_row,
magma_int_t *  n_col,
magma_int_t *  nnz,
float **  val,
magma_index_t **  row,
magma_index_t **  col,
const char *  filename,
magma_queue_t  queue 
)

Reads in a matrix stored in coo format from a binary and converts it into CSR format.

It duplicates the off-diagonal entries in the symmetric case.

Parameters
[out]n_rowmagma_int_t* number of rows in matrix
[out]n_colmagma_int_t* number of columns in matrix
[out]nnzmagma_int_t* number of nonzeros in matrix
[out]valfloat** value array of CSR output
[out]rowmagma_index_t** row pointer of CSR output
[out]colmagma_index_t** column indices of CSR output
[in]filenameconst char* filname of the mtx matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t read_s_csr_from_mtx ( magma_storage_t *  type,
magma_location_t *  location,
magma_int_t *  n_row,
magma_int_t *  n_col,
magma_int_t *  nnz,
float **  val,
magma_index_t **  row,
magma_index_t **  col,
const char *  filename,
magma_queue_t  queue 
)

Reads in a matrix stored in coo format from a Matrix Market (.mtx) file and converts it into CSR format.

It duplicates the off-diagonal entries in the symmetric case.

Parameters
[out]typemagma_storage_t* storage type of matrix
[out]locationmagma_location_t* location of matrix
[out]n_rowmagma_int_t* number of rows in matrix
[out]n_colmagma_int_t* number of columns in matrix
[out]nnzmagma_int_t* number of nonzeros in matrix
[out]valfloat** value array of CSR output
[out]rowmagma_index_t** row pointer of CSR output
[out]colmagma_index_t** column indices of CSR output
[in]filenameconst char* filname of the mtx matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t s_transpose_csr ( magma_int_t  n_rows,
magma_int_t  n_cols,
magma_int_t  nnz,
float *  val,
magma_index_t *  row,
magma_index_t *  col,
magma_int_t *  new_n_rows,
magma_int_t *  new_n_cols,
magma_int_t *  new_nnz,
float **  new_val,
magma_index_t **  new_row,
magma_index_t **  new_col,
magma_queue_t  queue 
)

Transposes a matrix stored in CSR format.

Parameters
[in]n_rowsmagma_int_t number of rows in input matrix
[in]n_colsmagma_int_t number of columns in input matrix
[in]nnzmagma_int_t number of nonzeros in input matrix
[in]valfloat* value array of input matrix
[in]rowmagma_index_t* row pointer of input matrix
[in]colmagma_index_t* column indices of input matrix
[in]new_n_rowsmagma_index_t* number of rows in transposed matrix
[in]new_n_colsmagma_index_t* number of columns in transposed matrix
[in]new_nnzmagma_index_t* number of nonzeros in transposed matrix
[in]new_valfloat** value array of transposed matrix
[in]new_rowmagma_index_t** row pointer of transposed matrix
[in]new_colmagma_index_t** column indices of transposed matrix
[in]queuemagma_queue_t Queue to execute in.
magma_int_t write_s_csr_mtx ( magma_int_t  n_row,
magma_int_t  n_col,
magma_int_t  nnz,
float **  val,
magma_index_t **  row,
magma_index_t **  col,
magma_order_t  MajorType,
const char *  filename,
magma_queue_t  queue 
)

Writes a CSR matrix to a file using Matrix Market format.

Parameters
[in]n_rowmagma_int_t* number of rows in matrix
[in]n_colmagma_int_t* number of columns in matrix
[in]nnzmagma_int_t* number of nonzeros in matrix
[in]valfloat** value array of CSR
[in]rowmagma_index_t** row pointer of CSR
[in]colmagma_index_t** column indices of CSR
[in]MajorTypemagma_index_t Row or Column sort default: 0 = RowMajor, 1 = ColMajor
[in]filenameconst char* output-filname of the mtx matrix
[in]queuemagma_queue_t Queue to execute in.