Linear performance models, which given measurements, provides new model guess. More...

#include <model.h>

Inheritance diagram for CTF_int::LinModel< nparam >:

Collaboration diagram for CTF_int::LinModel< nparam >:

Public Member Functions
	LinModel (double const init_guess, char const name, int hist_size=32768)
	constructor More...

	LinModel ()

	~LinModel ()

void	update (MPI_Comm cm)
	updates model based on observarions More...

void	observe (double const *time_param)
	records observation consisting of execution time and nparam paramter values More...

bool	should_observe (double const *time_param)
	decides whether the current instance should be observed More...

double	est_time (double const *param)
	estimates model time based on observarions More...

void	print ()
	prints current parameter estimates More...

void	print_uo ()
	prints time estimate errors More...

double *	get_coeff ()
	return the turned model coefficients More...

void	load_coeff (std::string file_name)
	load model coefficients from file More...

void	write_coeff (std::string file_name)
	write model coefficients to file More...

void	dump_data (std::string path)
	dump model data to a file More...

Data Fields
int	hist_size
	the number of latest observations we want to consider when updating the model More...

double *	time_param_mat
	matrix containing parameter/time obervations, with hist_size columns and nmat_lda rows, stores the last hist_size paramstime obervations More...

double	coeff_guess [nparam]
	current coefficients for each paramter that the linear model will use More...

char *	name
	name of model More...

Detailed Description

template<int nparam>
class CTF_int::LinModel< nparam >

Linear performance models, which given measurements, provides new model guess.

Definition at line 32 of file model.h.

Constructor & Destructor Documentation

template<int nparam>

CTF_int::LinModel< nparam >::LinModel	(	double const *	init_guess,
		char const *	name,
		int	hist_size = `32768`
	)

constructor

Parameters

[in]	init_guess	array of size nparam consisting of initial model parameter guesses
[in]	name	identifier
[in]	hist_size	number of times to keep in history

Definition at line 122 of file model.cxx.

References CTF_int::alloc(), and CTF_int::get_all_models().

template<int nparam>

CTF_int::LinModel< nparam >::LinModel ( )

Definition at line 151 of file model.cxx.

template<int nparam>

CTF_int::LinModel< nparam >::~LinModel ( )

Definition at line 159 of file model.cxx.

References CTF_int::cdealloc().

Member Function Documentation

template<int nparam>

void CTF_int::LinModel< nparam >::dump_data ( std::string path )

virtual

dump model data to a file

Reimplemented from CTF_int::Model.

Definition at line 686 of file model.cxx.

References ctf.core::np(), ctf.core::rank(), and ctf.core::string.

Referenced by CTF_int::CubicModel< nparam >::dump_data().

template<int nparam>

double CTF_int::LinModel< nparam >::est_time ( double const * param )

estimates model time based on observarions

Parameters

[in] param array of size nparam of form [val_1,val_2,...,val_nparam]

Returns: estimated time

Definition at line 530 of file model.cxx.

Referenced by CTF_int::blres_est_time(), CTF_int::CubicModel< nparam >::est_time(), CTF_int::seq_tsr_spctr::est_time_fp(), CTF_int::seq_tsr_ctr::est_time_fp(), CTF_int::spctr_pin_keys::est_time_fp(), CTF_int::CommData::estimate_allred_time(), CTF_int::CommData::estimate_alltoall_time(), CTF_int::CommData::estimate_alltoallv_time(), CTF_int::CommData::estimate_bcast_time(), and CTF_int::CommData::estimate_red_time().

template<int nparam>

double * CTF_int::LinModel< nparam >::get_coeff ( )

return the turned model coefficients

Definition at line 556 of file model.cxx.

Referenced by CTF_int::CubicModel< nparam >::get_coeff().

template<int nparam>

void CTF_int::LinModel< nparam >::load_coeff ( std::string file_name )

virtual

load model coefficients from file

Parameters

[in] file_name the file we wish to load model coefficients from

Reimplemented from CTF_int::Model.

Definition at line 622 of file model.cxx.

References ctf.core::string.

Referenced by CTF_int::CubicModel< nparam >::load_coeff().

template<int nparam>

void CTF_int::LinModel< nparam >::observe ( double const * time_param )

records observation consisting of execution time and nparam paramter values

Parameters

[in] time_param array of size nparam+1 of form [exe_sec,val_1,val_2,...,val_nparam]

Definition at line 168 of file model.cxx.

Referenced by CTF_int::CommData::all_to_allv(), CTF_int::CommData::allred(), CTF_int::CommData::bcast(), CTF_int::block_reshuffle(), CTF_int::CubicModel< nparam >::observe(), CTF_int::CommData::red(), CTF_int::seq_tsr_spctr::run(), CTF_int::seq_tsr_ctr::run(), and CTF_int::spctr_pin_keys::run().

template<int nparam>

void CTF_int::LinModel< nparam >::print ( )

virtual

prints current parameter estimates

Reimplemented from CTF_int::Model.

Definition at line 539 of file model.cxx.

Referenced by CTF_int::CubicModel< nparam >::print().

template<int nparam>

void CTF_int::LinModel< nparam >::print_uo ( )

virtual

prints time estimate errors

Reimplemented from CTF_int::Model.

Definition at line 550 of file model.cxx.

Referenced by CTF_int::CubicModel< nparam >::print_uo().

template<int nparam>

bool CTF_int::LinModel< nparam >::should_observe ( double const * time_param )

decides whether the current instance should be observed

Parameters

[in] time_param array of size nparam+1 of form [exe_sec,val_1,val_2,...,val_nparam]

Definition at line 215 of file model.cxx.

References ASSERT.

Referenced by CTF_int::CommData::all_to_allv(), CTF_int::CommData::allred(), CTF_int::CommData::bcast(), CTF_int::block_reshuffle(), CTF_int::CommData::red(), CTF_int::seq_tsr_spctr::run(), CTF_int::seq_tsr_ctr::run(), and CTF_int::CubicModel< nparam >::should_observe().

template<int nparam>

void CTF_int::LinModel< nparam >::update ( MPI_Comm cm )

virtual

updates model based on observarions

Parameters

[in] cm communicator across which we should synchronize model (collect observations)

Reimplemented from CTF_int::Model.

Definition at line 227 of file model.cxx.

References CTF_int::alloc(), ctf.core::b, CTF_int::cdealloc(), CTF_int::cdgelsd(), CTF_int::cdgeqrf(), CTF_int::cdormqr(), CTF_int::lda_cpy(), ctf.core::np(), ctf.core::rank(), and REG_LAMBDA.

Referenced by CTF_int::CubicModel< nparam >::update().

template<int nparam>

void CTF_int::LinModel< nparam >::write_coeff ( std::string file_name )

virtual

write model coefficients to file

Parameters

[in] file_name the file we wish to write model coefficients to

Reimplemented from CTF_int::Model.

Definition at line 561 of file model.cxx.

References ctf.core::string.

Referenced by CTF_int::CubicModel< nparam >::write_coeff().

Field Documentation

template<int nparam>

double CTF_int::LinModel< nparam >::coeff_guess[nparam]

current coefficients for each paramter that the linear model will use

Definition at line 64 of file model.h.

template<int nparam>

int CTF_int::LinModel< nparam >::hist_size

the number of latest observations we want to consider when updating the model

Definition at line 58 of file model.h.

template<int nparam>

char* CTF_int::LinModel< nparam >::name

name of model

Definition at line 69 of file model.h.

template<int nparam>

double* CTF_int::LinModel< nparam >::time_param_mat

matrix containing parameter/time obervations, with hist_size columns and nmat_lda rows, stores the last hist_size paramstime obervations

Definition at line 62 of file model.h.

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

Public Member Functions

Data Fields

Detailed Description

template<int nparam> class CTF_int::LinModel< nparam >

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation

template<int nparam>
class CTF_int::LinModel< nparam >