dbm_multiply_cpu.c File Reference

#include <assert.h>
#include <stddef.h>
#include <string.h>
#include "dbm_hyperparams.h"
#include "dbm_multiply_cpu.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_.
void	dbm_multiply_cpu_process_batch (const int ntasks, dbm_task_t batch[ntasks], const double alpha, const dbm_pack_t *pack_a, const dbm_pack_t *pack_b, dbm_shard_t *shard_c)
	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.

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 39 of file dbm_multiply_cpu.c.

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dbm_multiply_cpu_process_batch()

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

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.

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

Author

Ole Schuett

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

Author

Ole Schuett

Definition at line 70 of file dbm_multiply_cpu.c.

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