MAGMA  1.6.1
Matrix Algebra for GPU and Multicore Architectures
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double-complex precision

Functions

magma_int_t magma_zbaiter (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_queue_t queue)
 Solves a system of linear equations A * x = b via the block asynchronous iteration method on GPU. More...
 
magma_int_t magma_zbicgstab (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_queue_t queue)
 Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A. More...
 
magma_int_t magma_zbicgstab_merge (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_queue_t queue)
 Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A. More...
 
magma_int_t magma_zbicgstab_merge2 (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_queue_t queue)
 Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A. More...
 
magma_int_t magma_zcir (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_precond_parameters *precond_par, magma_queue_t queue)
 Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A. More...
 
magma_int_t magma_zcpir (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_precond_parameters *precond_par, magma_queue_t queue)
 Solves a system of linear equations A * X = B where A is a hermetian matrix. More...
 
magma_int_t magma_zfgmres (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_z_preconditioner *precond_par, magma_queue_t queue)
 Solves a system of linear equations A * X = B where A is a complex sparse matrix stored in the GPU memory. More...
 
magma_int_t magma_zgmres (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_queue_t queue)
 Solves a system of linear equations A * X = B where A is a complex sparse matrix stored in the GPU memory. More...
 
magma_int_t magma_zilusetup (magma_z_sparse_matrix A, magma_z_sparse_matrix *M, magma_int_t *ipiv, magma_queue_t queue)
 LU for a BCSR matrix A. More...
 
magma_int_t magma_ziterref (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_z_preconditioner *precond_par, magma_queue_t queue)
 Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A. More...
 
magma_int_t magma_zjacobi (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_queue_t queue)
 Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A. More...
 
magma_int_t magma_zpastixsetup (magma_z_sparse_matrix A, magma_z_vector b, magma_z_preconditioner *precond, magma_queue_t queue)
 Prepares the PASTIX solver. More...
 
magma_int_t magma_zpgmres (magma_z_sparse_matrix A, magma_z_vector b, magma_z_vector *x, magma_z_solver_par *solver_par, magma_z_preconditioner *precond_par, magma_queue_t queue)
 ma Solves a system of linear equations A * X = B where A is a complex sparse matrix stored in the GPU memory. More...
 

Detailed Description

Function Documentation

magma_int_t magma_zbaiter ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * x = b via the block asynchronous iteration method on GPU.

Parameters
[in]Amagma_z_sparse_matrix input matrix A
[in]bmagma_z_vector RHS b
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zbicgstab ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A.

This is a GPU implementation of the Biconjugate Gradient Stabelized method.

Parameters
[in]Amagma_z_sparse_matrix input matrix A
[in]bmagma_z_vector RHS b
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zbicgstab_merge ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A.

This is a GPU implementation of the Biconjugate Gradient Stabelized method. The difference to magma_zbicgstab is that we use specifically designed kernels merging multiple operations into one kernel.

Parameters
[in]Amagma_z_sparse_matrix input matrix A
[in]bmagma_z_vector RHS b
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zbicgstab_merge2 ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A.

This is a GPU implementation of the Biconjugate Gradient Stabelized method. The difference to magma_zbicgstab is that we use specifically designed kernels merging multiple operations into one kernel.

Parameters
[in]Amagma_z_sparse_matrix input matrix A
[in]bmagma_z_vector RHS b
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zcir ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_precond_parameters *  precond_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A.

This is a GPU implementation of the mixed precision Iterative Refinement method.

Parameters
[in]Amagma_z_sparse_matrix input matrix A
[in]bmagma_z_vector RHS b
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters
[in,out]precond_parmagma_precond_parameters * parameters for inner solver
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zcpir ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_precond_parameters *  precond_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * X = B where A is a hermetian matrix.

This is a GPU implementation of the mixed precision Iterative Refinement method featuring a Jacobi smoother after the low precision inner solver.

Parameters
[in]Amagma_z_sparse_matrix input matrix A
[in]bmagma_z_vector RHS b
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters

magma_precond_parameters *precond_par parameters for inner solver

Parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zfgmres ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_z_preconditioner *  precond_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * X = B where A is a complex sparse matrix stored in the GPU memory.

X and B are complex vectors stored on the GPU memory. This is a GPU implementation of the right-preconditioned flexible GMRES.

Parameters
[in]Amagma_z_sparse_matrix descriptor for matrix A
[in]bmagma_z_vector RHS b vector
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters
[in]precond_parmagma_z_preconditioner* preconditioner
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zgmres ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * X = B where A is a complex sparse matrix stored in the GPU memory.

X and B are complex vectors stored on the GPU memory. This is a GPU implementation of the GMRES method.

Parameters
[in]Amagma_z_sparse_matrix descriptor for matrix A
[in]bmagma_z_vector RHS b vector
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zilusetup ( magma_z_sparse_matrix  A,
magma_z_sparse_matrix *  M,
magma_int_t *  ipiv,
magma_queue_t  queue 
)

LU for a BCSR matrix A.

We assume all diagonal blocks to be nonzero.

Parameters
[in]Amagma_z_sparse_matrix input matrix A (on DEV)
[in]Mmagma_z_sparse_matrix* output matrix M approx. (LU)^{-1} (on DEV)
[out]ipivmagma_int_t* pivoting vector
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_ziterref ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_z_preconditioner *  precond_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A.

This is a GPU implementation of the Iterative Refinement method. The inner solver is passed via the preconditioner argument.

Parameters
[in]Amagma_z_sparse_matrix input matrix A
[in]bmagma_z_vector RHS b
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters
[in,out]precond_parmagma_z_preconditioner* inner solver
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zjacobi ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_queue_t  queue 
)

Solves a system of linear equations A * X = B where A is a complex Hermitian N-by-N positive definite matrix A.

This is a GPU implementation of the Jacobi method.

Parameters
[in]Amagma_z_sparse_matrix input matrix A
[in]bmagma_z_vector RHS b
[in,out]xmagma_z_vector* solution approximation
[in,out]solver_parmagma_z_solver_par* solver parameters
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zpastixsetup ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_preconditioner *  precond,
magma_queue_t  queue 
)

Prepares the PASTIX solver.

Parameters
[in]Amagma_z_sparse_matrix input matrix A
[in]bmagma_z_vector RHS b
[in]precondmagma_z_preconditioner* preconditioner parameter
[in]queuemagma_queue_t Queue to execute in.
magma_int_t magma_zpgmres ( magma_z_sparse_matrix  A,
magma_z_vector  b,
magma_z_vector *  x,
magma_z_solver_par *  solver_par,
magma_z_preconditioner *  precond_par,
magma_queue_t  queue 
)

ma Solves a system of linear equations A * X = B where A is a complex sparse matrix stored in the GPU memory.

X and B are complex vectors stored on the GPU memory. This is a GPU implementation of the right-preconditioned GMRES method.

@param[in]
A           magma_z_sparse_matrix
            descriptor for matrix A

@param[in]
b           magma_z_vector
            RHS b vector

@param[in,out]
x           magma_z_vector*
            solution approximation

@param[in,out]
solver_par  magma_z_solver_par*
            solver parameters

@param[in]
precond_par magma_z_preconditioner*
            preconditioner
@param[in]
queue       magma_queue_t
            Queue to execute in.