dbm_multiply_cpu.c File Reference

#include "dbm_multiply_cpu.h"
#include "dbm_hyperparams.h"
#include <assert.h>
#include <stddef.h>
#include <string.h>

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Functions
void	dgemm_ (const char *transa, const char *transb, const int *m, const int *n, const int *k, const double *alpha, const double *a, const int *lda, const double *b, const int *ldb, const double *beta, double *c, const int *ldc)
	Prototype for BLAS dgemm.
static void	dbm_dgemm (const char transa, const char transb, const int m, const int n, const int k, const double alpha, const double *a, const int lda, const double *b, const int ldb, const double beta, double *c, const int ldc)
	Private convenient wrapper to hide Fortran nature of dgemm_.
static unsigned int	hash (const dbm_task_t task)
	Private hash function based on Szudzik's elegant pairing. Using unsigned int to return a positive number even after overflow. https://en.wikipedia.org/wiki/Pairing_function#Other_pairing_functions https://stackoverflow.com/a/13871379 http://szudzik.com/ElegantPairing.pdf.
void	dbm_multiply_cpu_process_batch (int ntasks, const dbm_task_t batch[ntasks], double alpha, const dbm_pack_t *pack_a, const dbm_pack_t *pack_b, dbm_shard_t *shard_c, int options)
	Internal routine for executing the tasks in given batch on the CPU.

Function Documentation

dgemm_()

void dgemm_	(	const char *	transa,
		const char *	transb,
		const int *	m,
		const int *	n,
		const int *	k,
		const double *	alpha,
		const double *	a,
		const int *	lda,
		const double *	b,
		const int *	ldb,
		const double *	beta,
		double *	c,
		const int *	ldc
	)

Prototype for BLAS dgemm.

Author

Ole Schuett

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dbm_dgemm()

static void dbm_dgemm ( const char  transa, const char  transb, const int  m, const int  n, const int  k, const double  alpha, const double *  a, const int  lda, const double *  b, const int  ldb, const double  beta, double *  c, const int  ldc  )

inlinestatic

Private convenient wrapper to hide Fortran nature of dgemm_.

Author

Ole Schuett

Definition at line 38 of file dbm_multiply_cpu.c.

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hash()

static unsigned int hash ( const dbm_task_t  task )

inlinestatic

Private hash function based on Szudzik's elegant pairing. Using unsigned int to return a positive number even after overflow. https://en.wikipedia.org/wiki/Pairing_function#Other_pairing_functions https://stackoverflow.com/a/13871379 http://szudzik.com/ElegantPairing.pdf.

Author

Ole Schuett

Definition at line 56 of file dbm_multiply_cpu.c.

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dbm_multiply_cpu_process_batch()

void dbm_multiply_cpu_process_batch	(	int	ntasks,
		const dbm_task_t	batch[ntasks],
		double	alpha,
		const dbm_pack_t *	pack_a,
		const dbm_pack_t *	pack_b,
		dbm_shard_t *	shard_c,
		int	options
	)

Internal routine for executing the tasks in given batch on the CPU.

Author

Ole Schuett

Definition at line 67 of file dbm_multiply_cpu.c.

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