MatSeqAIJCUSPARSEGetIJ

returns the device row storage i and j indices for MATSEQAIJCUSPARSE matrices.

Synopsis

#include "petscmat.h" 
PetscErrorCode MatSeqAIJCUSPARSEGetIJ(Mat A, PetscBool compressed, const int **i, const int **j)

Not Collective

Input Parameters

• A - the matrix

• compressed - PETSC_TRUE or PETSC_FALSE indicating the matrix data structure should be always returned in compressed form

Output Parameters

• i - the CSR row pointers, these are always int even when PETSc is configured with --with-64-bit-indices

• j - the CSR column indices, these are always int even when PETSc is configured with --with-64-bit-indices

Note

When compressed is true, the CSR structure does not contain empty rows

See Also

Matrices, Mat, MatSeqAIJCUSPARSERestoreIJ(), MatSeqAIJCUSPARSEGetArrayRead()

Level

developer

Location

src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu

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