org.apache.sysds.runtime.data

Class DenseBlockLDRB

java.lang.Object

org.apache.sysds.runtime.data.DenseBlock

org.apache.sysds.runtime.data.DenseBlockLDRB

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

DenseBlockLBool, DenseBlockLFP32, DenseBlockLFP64, DenseBlockLInt32, DenseBlockLInt64, DenseBlockLString

public abstract class DenseBlockLDRB
extends DenseBlock

Dense Large Row Blocks have multiple 1D arrays (blocks), which contain complete rows. Except the last block all blocks have the same size (size refers to the number of rows contained and space allocated).

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.sysds.runtime.data.DenseBlock

DenseBlock.Type

Method Summary

Modifier and Type	Method and Description
int	blockSize() Get the number of rows per block, except last one.
int	blockSize(int bix) Get the number of rows of the given block.
long	countNonZeros() Compute the number of non-zero values, which potentially makes a full pass over the underlying blocks.
int	countNonZeros(int r) Compute the number of non-zero values for the given row, which potentially makes a full pass over the underlying row.
long	countNonZeros(int rl, int ru, int cl, int cu) Compute the number of non-zero values, which potentially makes a full pass over the underlying blocks in the row range.
int	index(int r) Get the block index for a given row.
boolean	isContiguous(int rl, int ru) Indicates if the dense block has a single underlying block for the given row range.
int	pos(int r) Get the position for a given row within its associated block.
int	pos(int[] ix) Get the position for a given cell within the associated block.
int	pos(int r, int c) Get the position for a given row and column within the associated block.
void	reset(int rlen, int[] odims, double v) Resets the dense block by setting the given value.
DenseBlock	set(DenseBlock db) Copy the given dense block.
DenseBlock	set(double v) Set the given value for the entire dense block (fill).
DenseBlock	set(int r, double[] v) Copy the given vector into the given row.
DenseBlock	set(int rl, int ru, int cl, int cu, double v) Set the given value for an entire index range of the dense block (fill).
int	size(int bix) Get the length of the given block.

Methods inherited from class org.apache.sysds.runtime.data.DenseBlock

capacity, get, get, getCumODims, getDim, getLong, getNextIndexes, getString, incr, incr, isContiguous, isNumeric, numBlocks, numDims, numRows, reset, reset, reset, reset, reset, reset, set, set, set, set, set, set, set, set, size, toString, values, valuesAt

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

blockSize

public int blockSize()

Description copied from class: DenseBlock

Get the number of rows per block, except last one.

Specified by:

blockSize in class DenseBlock

Returns:

number of rows in block

blockSize

public int blockSize(int bix)

Description copied from class: DenseBlock

Get the number of rows of the given block.

Specified by:

blockSize in class DenseBlock

Parameters:

bix - block index

Returns:

number of rows in block

reset

public void reset(int rlen,
                  int[] odims,
                  double v)

Description copied from class: DenseBlock

Resets the dense block by setting the given value.

Specified by:

reset in class DenseBlock

Parameters:

rlen - number of rows

odims - other dimensions

v - value

pos

public int pos(int[] ix)

Description copied from class: DenseBlock

Get the position for a given cell within the associated block.

Specified by:

pos in class DenseBlock

Parameters:

ix - cell indexes

Returns:

block position

isContiguous

public boolean isContiguous(int rl,
                            int ru)

Description copied from class: DenseBlock

Indicates if the dense block has a single underlying block for the given row range.

Specified by:

isContiguous in class DenseBlock

Parameters:

rl - row lower index

ru - row upper index (inclusive)

Returns:

true if single block in row range

size

public int size(int bix)

Description copied from class: DenseBlock

Get the length of the given block.

Specified by:

size in class DenseBlock

Parameters:

bix - block index

Returns:

length

index

public int index(int r)

Description copied from class: DenseBlock

Get the block index for a given row.

Specified by:

index in class DenseBlock

Parameters:

r - row index

Returns:

block index

pos

public int pos(int r)

Description copied from class: DenseBlock

Get the position for a given row within its associated block.

Specified by:

pos in class DenseBlock

Parameters:

r - row index

Returns:

block position

pos

public int pos(int r,
               int c)

Description copied from class: DenseBlock

Get the position for a given row and column within the associated block.

Specified by:

pos in class DenseBlock

Parameters:

r - row index

c - column index

Returns:

block position

countNonZeros

public long countNonZeros()

Description copied from class: DenseBlock

Compute the number of non-zero values, which potentially makes a full pass over the underlying blocks.

Specified by:

countNonZeros in class DenseBlock

Returns:

number of non-zeros

countNonZeros

public int countNonZeros(int r)

Description copied from class: DenseBlock

Compute the number of non-zero values for the given row, which potentially makes a full pass over the underlying row.

Specified by:

countNonZeros in class DenseBlock

Parameters:

r - row index

Returns:

number of non-zeros

countNonZeros

public long countNonZeros(int rl,
                          int ru,
                          int cl,
                          int cu)

Description copied from class: DenseBlock

Compute the number of non-zero values, which potentially makes a full pass over the underlying blocks in the row range.

Specified by:

countNonZeros in class DenseBlock

Parameters:

rl - row lower index

ru - row upper index (exclusive)

cl - column lower index

cu - column upper index (exclusive)

Returns:

number of non-zeros

set

public DenseBlock set(double v)

Description copied from class: DenseBlock

Set the given value for the entire dense block (fill).

Specified by:

set in class DenseBlock

Parameters:

v - value

Returns:

self

set

public DenseBlock set(int rl,
                      int ru,
                      int cl,
                      int cu,
                      double v)

Description copied from class: DenseBlock

Set the given value for an entire index range of the dense block (fill).

Specified by:

set in class DenseBlock

Parameters:

rl - row lower index

ru - row upper index (exclusive)

cl - column lower index

cu - column upper index (exclusive)

v - value

Returns:

self

set

public DenseBlock set(int r,
                      double[] v)

Description copied from class: DenseBlock

Copy the given vector into the given row.

Specified by:

set in class DenseBlock

Parameters:

r - row index

v - value vector

Returns:

self

set

public DenseBlock set(DenseBlock db)

Description copied from class: DenseBlock

Copy the given dense block.

Specified by:

set in class DenseBlock

Parameters:

db - dense block

Returns:

self