zgemm_Task Class Reference

Class to calculate a matrix product C=A*B in parallel. More...

#include <dot.h>

Inheritance diagram for zgemm_Task:

Public Member Functions
void	execute (tbb::task_group &g)
	This function is called when a task is spawned. More...
void	print (const std::stringstream &sstream, int verbose_level=1) const
	Call to print output messages in the function of the verbosity level. More...
void	set_debugfile (std::string debugfile)
	Call to set the debugfile name. More...
void	set_verbose (int verbose_in)
	Call to set the verbose attribute. More...
void	zgemm_chunk ()
	Call to calculate the product of matrix chunks defined by attributes rows, cols. More...
	zgemm_Task (Matrix &A_in, Matrix &B_in, Matrix &C_in)
	Constructor of the class. More...
	zgemm_Task (Matrix &A_in, Matrix &B_in, Matrix &C_in, row_indices &rows_in, col_indices &cols_in)
	Constructor of the class. More...

Public Attributes
Matrix	A
	The matrix A. More...
Matrix	B
	The matrix B. More...
Matrix	C
	The matrix C. More...
col_indices	cols
	Structure containing column limits for the partitioning of the matrix product calculations. More...
bool	debug
	Logical variable. Set true to write output messages to the 'debug.txt' file. More...
std::string	debugfile_name
	String variable. Set the debug file name. More...
CBLAS_ORDER	order
	CBLAS storage order. More...
row_indices	rows
	Structure containing row limits for the partitioning of the matrix product calculations. More...
int	verbose
	Set the verbosity level of the output messages. More...

Detailed Description

Class to calculate a matrix product C=A*B in parallel.

The parallelism follow the strategy of divide-and-conquer.

Definition at line 199 of file dot.h.

Constructor & Destructor Documentation

zgemm_Task() [1/2]

zgemm_Task::zgemm_Task	(	Matrix &	A_in,
		Matrix &	B_in,
		Matrix &	C_in
	)

Constructor of the class.

(In this case the row/col limits are extracted from matrices A,B,C).

Parameters

A_in	The object representing matrix A.
B_in	The object representing matrix B.
C_in	The object representing matrix C.

Definition at line 366 of file dot.cpp.

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zgemm_Task() [2/2]

zgemm_Task::zgemm_Task	(	Matrix &	A_in,
		Matrix &	B_in,
		Matrix &	C_in,
		row_indices &	rows_in,
		col_indices &	cols_in
	)

Constructor of the class.

Parameters

A_in	The object representing matrix A.
B_in	The object representing matrix B.
C_in	The object representing matrix C.
rows_in	Structure containing row limits for the partitioning of the matrix product calculations.
cols_in	Structure containing column limits for the partitioning of the matrix product calculations.

Definition at line 378 of file dot.cpp.

Member Function Documentation

execute()

void zgemm_Task::execute

(

tbb::task_group &

g

)

This function is called when a task is spawned.

It divides the work into chunks following the strategy of divide-and-conquer until the problem size meets a predefined treshold.

Returns

Returns with a pointer to a tbb::task instance or with a null pointer.

Definition at line 387 of file dot.cpp.

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print()

void logging::print ( const std::stringstream &  sstream, int  verbose_level = 1  ) const

inherited

Call to print output messages in the function of the verbosity level.

Parameters

sstream	The stringstream input to store the output messages.
verbose_level	Integer input. High level means write more to the standart output, 0 means write nothing. The default value is set to 1.

Definition at line 55 of file logging.cpp.

set_debugfile()

void logging::set_debugfile ( std::string  debugfile )

inherited

Call to set the debugfile name.

Parameters

debugfile

String variable. Set the debugfile name.

Definition at line 95 of file logging.cpp.

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set_verbose()

void logging::set_verbose ( int  verbose_in )

inherited

Call to set the verbose attribute.

Parameters

verbose_in

Integer variable. Set the number to specify the verbosity level for output messages.

Definition at line 85 of file logging.cpp.

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zgemm_chunk()

void zgemm_Task_serial::zgemm_chunk ( )

inherited

Call to calculate the product of matrix chunks defined by attributes rows, cols.

The result is stored in the corresponding chunk of matrix C.

Definition at line 301 of file dot.cpp.

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Member Data Documentation

A

Matrix zgemm_Task_serial::A

inherited

The matrix A.

Definition at line 151 of file dot.h.

B

Matrix zgemm_Task_serial::B

inherited

The matrix B.

Definition at line 153 of file dot.h.

C

Matrix zgemm_Task_serial::C

inherited

The matrix C.

Definition at line 155 of file dot.h.

cols

col_indices zgemm_Task_serial::cols

inherited

Structure containing column limits for the partitioning of the matrix product calculations.

Definition at line 159 of file dot.h.

debug

bool logging::debug

inherited

Logical variable. Set true to write output messages to the 'debug.txt' file.

Definition at line 53 of file logging.h.

debugfile_name

std::string logging::debugfile_name

inherited

String variable. Set the debug file name.

Definition at line 56 of file logging.h.

order

CBLAS_ORDER zgemm_Task_serial::order

inherited

CBLAS storage order.

Definition at line 161 of file dot.h.

rows

row_indices zgemm_Task_serial::rows

inherited

Structure containing row limits for the partitioning of the matrix product calculations.

Definition at line 157 of file dot.h.

verbose

int logging::verbose

inherited

Set the verbosity level of the output messages.

Definition at line 50 of file logging.h.

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The documentation for this class was generated from the following files:

• dot.h
• dot.cpp