ViennaCL - The Vienna Computing Library
1.5.1
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A sparse square matrix, where entries are stored as triplets (i,j, val), where i and j are the row and column indices and val denotes the entry. More...
#include <coordinate_matrix.hpp>
Public Types | |
typedef viennacl::backend::mem_handle | handle_type |
typedef scalar< typename viennacl::tools::CHECK_SCALAR_TEMPLATE_ARGUMENT < SCALARTYPE >::ResultType > | value_type |
typedef vcl_size_t | size_type |
Public Member Functions | |
coordinate_matrix () | |
Default construction of a coordinate matrix. No memory is allocated. More... | |
coordinate_matrix (viennacl::context ctx) | |
coordinate_matrix (vcl_size_t rows, vcl_size_t cols, vcl_size_t nonzeros=0, viennacl::context ctx=viennacl::context()) | |
Construction of a coordinate matrix with the supplied number of rows and columns. If the number of nonzeros is positive, memory is allocated. More... | |
coordinate_matrix (vcl_size_t rows, vcl_size_t cols, viennacl::context ctx) | |
Construction of a coordinate matrix with the supplied number of rows and columns in the supplied context. Does not yet allocate memory. More... | |
void | reserve (vcl_size_t new_nonzeros) |
Allocate memory for the supplied number of nonzeros in the matrix. Old values are preserved. More... | |
void | resize (vcl_size_t new_size1, vcl_size_t new_size2, bool preserve=true) |
Resize the matrix. More... | |
vcl_size_t | size1 () const |
Returns the number of rows. More... | |
vcl_size_t | size2 () const |
Returns the number of columns. More... | |
vcl_size_t | nnz () const |
Returns the number of nonzero entries. More... | |
vcl_size_t | internal_nnz () const |
Returns the number of internal nonzero entries. More... | |
const handle_type & | handle12 () const |
Returns the OpenCL handle to the (row, column) index array. More... | |
const handle_type & | handle () const |
Returns the OpenCL handle to the matrix entry array. More... | |
const handle_type & | handle3 () const |
Returns the OpenCL handle to the group start index array. More... | |
vcl_size_t | groups () const |
Friends | |
template<typename CPU_MATRIX , typename SCALARTYPE2 , unsigned int ALIGNMENT2> | |
void | copy (const CPU_MATRIX &cpu_matrix, coordinate_matrix< SCALARTYPE2, ALIGNMENT2 > &gpu_matrix) |
A sparse square matrix, where entries are stored as triplets (i,j, val), where i and j are the row and column indices and val denotes the entry.
The present implementation of coordinate_matrix suffers from poor runtime efficiency. Users are adviced to use compressed_matrix in the meanwhile.
SCALARTYPE | The floating point type (either float or double, checked at compile time) |
ALIGNMENT | The internal memory size for the arrays, given by (size()/ALIGNMENT + 1) * ALIGNMENT. ALIGNMENT must be a power of two. |
typedef vcl_size_t size_type |
typedef scalar<typename viennacl::tools::CHECK_SCALAR_TEMPLATE_ARGUMENT<SCALARTYPE>::ResultType> value_type |
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inline |
Default construction of a coordinate matrix. No memory is allocated.
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inlineexplicit |
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inline |
Construction of a coordinate matrix with the supplied number of rows and columns. If the number of nonzeros is positive, memory is allocated.
rows | Number of rows |
cols | Number of columns |
nonzeros | Optional number of nonzeros for memory preallocation |
ctx | Optional context in which the matrix is created (one out of multiple OpenCL contexts, CUDA, host) |
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inlineexplicit |
Construction of a coordinate matrix with the supplied number of rows and columns in the supplied context. Does not yet allocate memory.
rows | Number of rows |
cols | Number of columns |
ctx | Context in which to create the matrix |
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inline |
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inline |
Returns the OpenCL handle to the matrix entry array.
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inline |
Returns the OpenCL handle to the (row, column) index array.
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inline |
Returns the OpenCL handle to the group start index array.
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inline |
Returns the number of internal nonzero entries.
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inline |
Returns the number of nonzero entries.
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inline |
Allocate memory for the supplied number of nonzeros in the matrix. Old values are preserved.
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inline |
Resize the matrix.
new_size1 | New number of rows |
new_size2 | New number of columns |
preserve | If true, the old values are preserved. At present, old values are always discarded. |
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inline |
Returns the number of rows.
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inline |
Returns the number of columns.
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friend |