petsc-3.14.6 2021-03-30
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MatDenseCUDAReplaceArray
Allows one to replace the GPU array in a dense matrix with an array provided by the user. This is useful to avoid copying an array into a matrix
Synopsis
#include "petscmat.h"
PetscErrorCode
MatDenseCUDAReplaceArray
(
Mat
mat,const
PetscScalar
*array)
Not Collective
Input Parameters
mat
- the matrix
array
- the array in column major order
Notes
This permanently replaces the GPU array and frees the memory associated with the old GPU array. The memory passed in CANNOT be freed by the user. It will be freed when the matrix is destroyed. The array should respect the matrix leading dimension.
See Also
MatDenseCUDAGetArray
(),
MatDenseCUDAPlaceArray
(),
MatDenseCUDAResetArray
()
Level
developer
Location
src/mat/impls/dense/mpi/mpidense.c
Implementations
MatDenseCUDAReplaceArray_MPIDenseCUDA in src/mat/impls/dense/mpi/mpidense.c
MatDenseCUDAReplaceArray_SeqDenseCUDA in src/mat/impls/dense/seq/cuda/densecuda.cu
Index of all Mat routines
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Index of all manual pages