Dune Core Modules (2.8.0)
bcrsmatrix.hh
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172 DUNE_THROW(BCRSMatrixError,"You can only create an ImplicitBuilder for a matrix in implicit build mode");
174 DUNE_THROW(BCRSMatrixError,"You can only create an ImplicitBuilder for a matrix with set size that has not been compressed() yet");
192 ImplicitMatrixBuilder(Matrix& m, size_type rows, size_type cols, size_type avg_cols_per_row, double overflow_fraction)
196 DUNE_THROW(BCRSMatrixError,"You can only set up a matrix for this ImplicitBuilder if it has no memory allocated yet");
481 };
542 };
551 DUNE_THROW(BCRSMatrixError,"You cannot use operator[] in implicit build mode before calling compress()");
563 DUNE_THROW(BCRSMatrixError,"You cannot use operator[] in implicit build mode before calling compress()");
782 BCRSMatrix (size_type _n, size_type _m, size_type _avg, double compressionBufferSize, BuildMode bm)
809 DUNE_THROW(InvalidStateException,"BCRSMatrix can only be copy-constructed when source matrix is completely empty (size not set) or fully built)");
838 if (ready == building && (build_mode == unknown || build_mode == random || build_mode == row_wise) && (bm == row_wise || bm == random))
841 DUNE_THROW(InvalidStateException, "Matrix structure cannot be changed at this stage anymore (ready == "<<ready<<").");
867 DUNE_THROW(Dune::BCRSMatrixError,"number of non-zeroes may not be set in implicit mode, use setImplicitBuildModeParameters() instead");
898 DUNE_THROW(InvalidStateException,"You cannot modify build mode parameters at this stage anymore");
914 if (!((ready == notAllocated || ready == built) && (Mat.ready == notAllocated || Mat.ready == built)))
915 DUNE_THROW(InvalidStateException,"BCRSMatrix can only be copied when both target and source are empty or fully built)");
968 DUNE_THROW(BCRSMatrixError,"creation only allowed if row wise allocation was requested in the constructor");
1264 dwarn << "WARNING: size of row "<< i.index()<<" is "<<j.offset()<<". But was specified as being "<< (*i).end().offset()
1265 <<". This means you are wasting valuable space and creating additional cache misses!"<<std::endl;
1367 DUNE_THROW(InvalidStateException,"You may only call compress() at the end of the 'building' stage");
1414 "Please increase either the average number of entries per row or the compressionBufferSize value."
1429 "Please increase either the average number of entries per row or the compressionBufferSize value."
1447 "Please increase either the average number of entries per row or the compressionBufferSize value."
1486 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1514 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1547 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1569 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1594 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1614 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1640 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1663 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1686 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1709 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1724 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1768 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1791 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1814 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1837 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1862 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1885 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1905 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1925 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1948 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1986 nnz_ = std::accumulate( begin(), end(), size_type( 0 ), [] ( size_type s, const row_type &row ) { return s+row.getsize(); } );
2031 size_type allocationSize_; //allocated size of a and j arrays, except in implicit mode: nnz_==allocationsSize_
2192 Deallocator(typename std::allocator_traits<A>::template rebind_alloc<size_type>& sizeAllocator)
2217 void allocate(size_type rows, size_type columns, size_type allocationSize, bool allocateRows, bool allocate_data)
2229 DUNE_THROW(InvalidStateException,"Rows have already been allocated, cannot allocate a second time");
2276 DUNE_THROW(InvalidStateException,"implicit_allocate() may only be called in implicit build mode");
2282 DUNE_THROW(InvalidStateException,"You have to set the implicit build mode parameters before starting to build the matrix");
Helper functions for determining the vector/matrix block level.
This file implements a vector space as a tensor product of a given vector space. The number of compon...
Iterator class for sequential creation of blocks
Definition: bcrsmatrix.hh:955
bool operator==(const CreateIterator &it) const
equality
Definition: bcrsmatrix.hh:1050
CreateIterator & operator++()
prefix increment
Definition: bcrsmatrix.hh:975
size_type index() const
The number of the row that the iterator currently points to.
Definition: bcrsmatrix.hh:1056
bool operator!=(const CreateIterator &it) const
inequality
Definition: bcrsmatrix.hh:1044
CreateIterator(BCRSMatrix &_Mat, size_type _i)
constructor
Definition: bcrsmatrix.hh:958
void insert(size_type j)
put column index in row
Definition: bcrsmatrix.hh:1062
bool contains(size_type j)
return true if column index is in row
Definition: bcrsmatrix.hh:1068
size_type size() const
Get the current row size.
Definition: bcrsmatrix.hh:1077
Class used by shared_ptr to deallocate memory using the proper allocator.
Definition: bcrsmatrix.hh:2188
RealRowIterator()
empty constructor, use with care!
Definition: bcrsmatrix.hh:594
bool equals(const RealRowIterator< ValueType > &other) const
equality
Definition: bcrsmatrix.hh:622
std::remove_const< T >::type ValueType
The unqualified value type.
Definition: bcrsmatrix.hh:581
bool equals(const RealRowIterator< const ValueType > &other) const
equality
Definition: bcrsmatrix.hh:629
RealRowIterator(row_type *_p, size_type _i)
constructor
Definition: bcrsmatrix.hh:589
size_type index() const
return index
Definition: bcrsmatrix.hh:604
typename Imp::BlockTraits< B >::field_type field_type
export the type representing the field
Definition: bcrsmatrix.hh:486
bool exists(size_type i, size_type j) const
return true if (i,j) is in pattern
Definition: bcrsmatrix.hh:2005
BuildStage buildStage() const
The current build stage of the matrix.
Definition: bcrsmatrix.hh:1991
friend class CreateIterator
allow CreateIterator to access internal data
Definition: bcrsmatrix.hh:1092
void copyWindowStructure(const BCRSMatrix &Mat)
Copy the window structure from another matrix.
Definition: bcrsmatrix.hh:2120
B & entry(size_type row, size_type col)
Returns reference to entry (row,col) of the matrix.
Definition: bcrsmatrix.hh:1294
void usmhv(const field_type &alpha, const X &x, Y &y) const
y += alpha A^H x
Definition: bcrsmatrix.hh:1833
RealRowIterator< const row_type > const_iterator
The const iterator over the matrix rows.
Definition: bcrsmatrix.hh:705
static constexpr unsigned int blocklevel
increment block level counter
Definition: bcrsmatrix.hh:505
void allocate(size_type rows, size_type columns, size_type allocationSize, bool allocateRows, bool allocate_data)
Allocate memory for the matrix structure.
Definition: bcrsmatrix.hh:2217
BCRSMatrix & axpy(field_type alpha, const BCRSMatrix &b)
Add the scaled entries of another matrix to this one.
Definition: bcrsmatrix.hh:1590
FieldTraits< ft >::real_type infinity_norm_real() const
simplified infinity norm (uses Manhattan norm for complex values)
Definition: bcrsmatrix.hh:1903
void deallocate(bool deallocateRows=true)
deallocate memory of the matrix.
Definition: bcrsmatrix.hh:2137
Iterator RowIterator
rename the iterators for easier access
Definition: bcrsmatrix.hh:699
row_type & operator[](size_type i)
random access to the rows
Definition: bcrsmatrix.hh:547
void endrowsizes()
indicate that size of all rows is defined
Definition: bcrsmatrix.hh:1147
void incrementrowsize(size_type i, size_type s=1)
increment size of row i by s (1 by default)
Definition: bcrsmatrix.hh:1136
size_type nonzeroes() const
number of blocks that are stored (the number of blocks that possibly are nonzero)
Definition: bcrsmatrix.hh:1982
ConstIterator ConstRowIterator
rename the const row iterator for easier access
Definition: bcrsmatrix.hh:736
void setrowsize(size_type i, size_type s)
Set number of indices in row i to s.
Definition: bcrsmatrix.hh:1115
BCRSMatrix & operator*=(const field_type &k)
vector space multiplication with scalar
Definition: bcrsmatrix.hh:1482
RealRowIterator< row_type > iterator
The iterator over the (mutable matrix rows.
Definition: bcrsmatrix.hh:669
void usmtv(const field_type &alpha, const X &x, Y &y) const
y += alpha A^T x
Definition: bcrsmatrix.hh:1764
@ implicit
Build entries randomly with an educated guess for the number of entries per row.
Definition: bcrsmatrix.hh:537
BCRSMatrix(size_type _n, size_type _m, size_type _nnz, BuildMode bm)
matrix with known number of nonzeroes
Definition: bcrsmatrix.hh:754
::Dune::CompressionStatistics< size_type > CompressionStatistics
The type for the statistics object returned by compress()
Definition: bcrsmatrix.hh:501
BCRSMatrix & operator-=(const BCRSMatrix &b)
Subtract the entries of another matrix from this one.
Definition: bcrsmatrix.hh:1565
BCRSMatrix(const BCRSMatrix &Mat)
copy constructor
Definition: bcrsmatrix.hh:803
Iterator end()
Get iterator to one beyond last row.
Definition: bcrsmatrix.hh:679
void setIndices(size_type row, It begin, It end)
Set all column indices for row from the given iterator range.
Definition: bcrsmatrix.hh:1232
void addindex(size_type row, size_type col)
add index (row,col) to the matrix
Definition: bcrsmatrix.hh:1189
row_type::Iterator ColIterator
Iterator for the entries of each row.
Definition: bcrsmatrix.hh:702
FieldTraits< field_type >::real_type frobenius_norm() const
frobenius norm: sqrt(sum over squared values of entries)
Definition: bcrsmatrix.hh:1875
A::size_type size_type
The type for the index access and the size.
Definition: bcrsmatrix.hh:498
BCRSMatrix & operator/=(const field_type &k)
vector space division by scalar
Definition: bcrsmatrix.hh:1510
BCRSMatrix & operator+=(const BCRSMatrix &b)
Add the entries of another matrix to this one.
Definition: bcrsmatrix.hh:1543
BCRSMatrix(size_type _n, size_type _m, size_type _avg, double compressionBufferSize, BuildMode bm)
construct matrix with a known average number of entries per row
Definition: bcrsmatrix.hh:782
CreateIterator createend()
get create iterator pointing to one after the last block
Definition: bcrsmatrix.hh:1101
FieldTraits< field_type >::real_type frobenius_norm2() const
square of frobenius norm, need for block recursion
Definition: bcrsmatrix.hh:1858
row_type::ConstIterator ConstColIterator
Const iterator to the entries of a row.
Definition: bcrsmatrix.hh:739
void usmv(F &&alpha, const X &x, Y &y) const
y += alpha A x
Definition: bcrsmatrix.hh:1682
size_type getrowsize(size_type i) const
get current number of indices in row i
Definition: bcrsmatrix.hh:1126
size_type M() const
number of columns (counted in blocks)
Definition: bcrsmatrix.hh:1976
Imp::CompressedBlockVectorWindow< B, A > row_type
implement row_type with compressed vector
Definition: bcrsmatrix.hh:495
CreateIterator createbegin()
get initial create iterator
Definition: bcrsmatrix.hh:1095
@ rowSizesBuilt
The row sizes of the matrix are known.
Definition: bcrsmatrix.hh:478
@ notbuilt
Matrix is not built at all, no memory has been allocated, build mode and size can still be set.
Definition: bcrsmatrix.hh:469
@ notAllocated
Matrix is not built at all, no memory has been allocated, build mode and size can still be set.
Definition: bcrsmatrix.hh:471
@ building
Matrix is currently being built, some memory has been allocated, build mode and size are fixed.
Definition: bcrsmatrix.hh:473
BuildMode buildMode() const
The currently selected build mode of the matrix.
Definition: bcrsmatrix.hh:1997
FieldTraits< ft >::real_type infinity_norm() const
infinity norm (row sum norm, how to generalize for blocks?)
Definition: bcrsmatrix.hh:1883
B block_type
export the type representing the components
Definition: bcrsmatrix.hh:489
void implicit_allocate(size_type _n, size_type _m)
organizes allocation implicit mode calculates correct array size to be allocated and sets the the win...
Definition: bcrsmatrix.hh:2273
void setImplicitBuildModeParameters(size_type _avg, double compressionBufferSize)
Set parameters needed for creation in implicit build mode.
Definition: bcrsmatrix.hh:887
BCRSMatrix(size_type _n, size_type _m, BuildMode bm)
matrix with unknown number of nonzeroes
Definition: bcrsmatrix.hh:763
void endindices()
indicate that all indices are defined, check consistency
Definition: bcrsmatrix.hh:1246
CompressionStatistics compress()
Finishes the buildstage in implicit mode.
Definition: bcrsmatrix.hh:1358
void setDataPointers()
Set data pointers for all rows.
Definition: bcrsmatrix.hh:2101
size_type N() const
number of rows (counted in blocks)
Definition: bcrsmatrix.hh:1970
void setBuildMode(BuildMode bm)
Sets the build mode of the matrix.
Definition: bcrsmatrix.hh:831
void setSize(size_type rows, size_type columns, size_type nnz=0)
Set the size of the matrix.
Definition: bcrsmatrix.hh:859
BCRSMatrix & operator=(const BCRSMatrix &Mat)
assignment
Definition: bcrsmatrix.hh:909
void setColumnPointers(ConstRowIterator row)
Copy row sizes from iterator range starting at row and set column index pointers for all rows.
Definition: bcrsmatrix.hh:2075
ConstIterator end() const
Get const iterator to one beyond last row.
Definition: bcrsmatrix.hh:716
ConstIterator begin() const
Get const iterator to first row.
Definition: bcrsmatrix.hh:710
A allocator_type
export the allocator type
Definition: bcrsmatrix.hh:492
Proxy row object for entry access.
Definition: bcrsmatrix.hh:135
block_type & operator[](size_type j) const
Returns entry in column j.
Definition: bcrsmatrix.hh:140
A wrapper for uniform access to the BCRSMatrix during and after the build stage in implicit build mod...
Definition: bcrsmatrix.hh:115
Matrix::block_type block_type
The block_type of the underlying matrix.
Definition: bcrsmatrix.hh:123
ImplicitMatrixBuilder(Matrix &m)
Creates an ImplicitMatrixBuilder for matrix m.
Definition: bcrsmatrix.hh:168
ImplicitMatrixBuilder(Matrix &m, size_type rows, size_type cols, size_type avg_cols_per_row, double overflow_fraction)
Sets up matrix m for implicit construction using the given parameters and creates an ImplicitBmatrixu...
Definition: bcrsmatrix.hh:192
size_type M() const
The number of columns in the matrix.
Definition: bcrsmatrix.hh:215
Matrix::size_type size_type
The size_type of the underlying matrix.
Definition: bcrsmatrix.hh:126
row_object operator[](size_type i) const
Returns a proxy for entries in row i.
Definition: bcrsmatrix.hh:203
size_type N() const
The number of rows in the matrix.
Definition: bcrsmatrix.hh:209
Thrown when the compression buffer used by the implicit BCRSMatrix construction is exhausted.
Definition: istlexception.hh:35
Default exception if a function was called while the object is not in a valid state for that function...
Definition: exceptions.hh:279
T block_type
Export the type representing the components.
Definition: matrix.hh:566
Base class for stl conformant forward iterators.
Definition: iteratorfacades.hh:432
Traits for type conversions and type information.
Type traits to determine the type of reals (when working with complex numbers)
constexpr decltype(auto) elementAt(Container &&c, Index &&i)
Get element at given position from container.
Definition: hybridutilities.hh:133
constexpr T accumulate(Range &&range, T value, F &&f)
Accumulate values.
Definition: hybridutilities.hh:289
auto max(ADLTag< 0 >, const V &v1, const V &v2)
implements binary Simd::max()
Definition: defaults.hh:79
DWarnType dwarn(std::cerr)
Stream for warnings indicating problems.
Definition: stdstreams.hh:159
This file implements iterator facade classes for writing stl conformant iterators.
Some handy generic functions for ISTL matrices.
Implements a scalar matrix view wrapper around an existing scalar.
Implements a scalar vector view wrapper around an existing scalar.
Standard Dune debug streams.
Statistics about compression achieved in implicit mode.
Definition: bcrsmatrix.hh:86
size_type overflow_total
total number of elements written to the overflow area during construction.
Definition: bcrsmatrix.hh:92
size_type maximum
maximum number of non-zeroes per row.
Definition: bcrsmatrix.hh:90
double avg
average number of non-zeroes per row.
Definition: bcrsmatrix.hh:88
double mem_ratio
fraction of wasted memory resulting from non-used overflow area.
Definition: bcrsmatrix.hh:97
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