double-complex precision

Functions

magma_int_t magma_zlobpcg (magma_z_sparse_matrix A, magma_z_solver_par *solver_par, magma_queue_t queue)
 Solves an eigenvalue problem.

Function Documentation

magma_int_t magma_zlobpcg ( magma_z_sparse_matrix  A,
magma_z_solver_par *  solver_par,
magma_queue_t  queue 
)

Solves an eigenvalue problem.

A * X = evalues X

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 LOBPCG method.

This method allocates all required memory space inside the routine. Also, the memory is not allocated as one big chunk, but seperatly for the different blocks. This allows to use texture also for large matrices.

Parameters:
[in] A magma_z_sparse_matrix input matrix A
[in,out] solver_par magma_z_solver_par* solver parameters

make sure to fill: num_eigenvalues length_ev

Parameters:
[in] queue magma_queue_t Queue to execute in.

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