rocsparse_csr2bsr_nnz Interface Reference

• hipfort_rocsparse
• rocsparse_csr2bsr_nnz

Public Member Functions | List of all members

hipfort_rocsparse::rocsparse_csr2bsr_nnz Interface Reference

Public Member Functions
integer(kind(rocsparse_status_success)) function	rocsparse_csr2bsr_nnz_ (handle, dir, m, n, csr_descr, csr_row_ptr, csr_col_ind, block_dim, bsr_descr, bsr_row_ptr, bsr_nnz)
integer(kind(rocsparse_status_success)) function	rocsparse_csr2bsr_nnz_rank_0 (handle, dir, m, n, csr_descr, csr_row_ptr, csr_col_ind, block_dim, bsr_descr, bsr_row_ptr, bsr_nnz)
integer(kind(rocsparse_status_success)) function	rocsparse_csr2bsr_nnz_rank_1 (handle, dir, m, n, csr_descr, csr_row_ptr, csr_col_ind, block_dim, bsr_descr, bsr_row_ptr, bsr_nnz)

Detailed Description

This function takes a sparse CSR matrix as input and computes the block row offset array, bsr_row_ptr, and the total number of non-zero blocks, bsr_nnz, that will result from converting the CSR format input matrix to a BSR format output matrix. This function is the first step in the conversion and is used in conjunction with rocsparse_Xcsr2bsr().

Note

The routine supports asynchronous execution if the pointer mode is set to device.

This routine does not support execution in a hipGraph context.

Parameters

[in]	handle	- handle to the rocSPARSE library context queue.
[in]	dir	- direction that specifies whether to count non-zero elements by rocsparse_direction_row or by rocsparse_direction_column.
[in]	m	- number of rows of the sparse CSR matrix.
[in]	n	- number of columns of the sparse CSR matrix.
[in]	csr_descr	- descriptor of the sparse CSR matrix. Currently, only rocsparse_matrix_type_general is supported.
[in]	csr_row_ptr	- integer array containing m+1 elements that point to the start of each row of the CSR matrix.
[in]	csr_col_ind	- integer array of the column indices for each non-zero element in the CSR matrix.
[in]	block_dim	- the block dimension of the BSR matrix. Between 1 and min(m, n).
[in]	bsr_descr	- descriptor of the sparse BSR matrix. Currently, only rocsparse_matrix_type_general is supported.
[out]	bsr_row_ptr	- integer array containing mb+1 elements that point to the start of each block row of the BSR matrix.
[out]	bsr_nnz	- total number of non-zero elements in device or host memory.

Return values

rocsparse_status_success	the operation completed successfully.
rocsparse_status_invalid_handle	the library context was not initialized.
rocsparse_status_invalid_size	m, n, or block_dim is invalid.
rocsparse_status_invalid_pointer	csr_row_ptr, csr_col_ind, bsr_row_ptr, or bsr_nnz pointer is invalid.

Member Function/Subroutine Documentation

◆ rocsparse_csr2bsr_nnz_()

integer(kind(rocsparse_status_success)) function hipfort_rocsparse::rocsparse_csr2bsr_nnz::rocsparse_csr2bsr_nnz_	(	type(c_ptr), value	handle,
		integer(kind(rocsparse_direction_row)), value	dir,
		integer(c_int), value	m,
		integer(c_int), value	n,
		type(c_ptr), value	csr_descr,
		type(c_ptr), value	csr_row_ptr,
		type(c_ptr), value	csr_col_ind,
		integer(c_int), value	block_dim,
		type(c_ptr), value	bsr_descr,
		type(c_ptr), value	bsr_row_ptr,
		type(c_ptr), value	bsr_nnz
	)

◆ rocsparse_csr2bsr_nnz_rank_0()

integer(kind(rocsparse_status_success)) function hipfort_rocsparse::rocsparse_csr2bsr_nnz::rocsparse_csr2bsr_nnz_rank_0	(	type(c_ptr)	handle,
		integer(kind(rocsparse_direction_row))	dir,
		integer(c_int)	m,
		integer(c_int)	n,
		type(c_ptr)	csr_descr,
		integer(c_int), target	csr_row_ptr,
		integer(c_int), target	csr_col_ind,
		integer(c_int)	block_dim,
		type(c_ptr)	bsr_descr,
		integer(c_int), target	bsr_row_ptr,
		integer(c_int), target	bsr_nnz
	)

◆ rocsparse_csr2bsr_nnz_rank_1()

integer(kind(rocsparse_status_success)) function hipfort_rocsparse::rocsparse_csr2bsr_nnz::rocsparse_csr2bsr_nnz_rank_1	(	type(c_ptr)	handle,
		integer(kind(rocsparse_direction_row))	dir,
		integer(c_int)	m,
		integer(c_int)	n,
		type(c_ptr)	csr_descr,
		integer(c_int), dimension(:), target	csr_row_ptr,
		integer(c_int), dimension(:), target	csr_col_ind,
		integer(c_int)	block_dim,
		type(c_ptr)	bsr_descr,
		integer(c_int), dimension(:), target	bsr_row_ptr,
		integer(c_int), dimension(:), target	bsr_nnz
	)

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The documentation for this interface was generated from the following file:

• hipfort_rocsparse.F90