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Implementation of BF16 based gemv

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1. Add a new API -- sbgemv to support bfloat16 based gemv
2. Implement a generic kernel for sbgemv
3. Implement an avx512-bf16 based kernel for sbgemv

Signed-off-by: Chen, Guobing <guobing.chen@intel.com>
This commit is contained in:
Chen, Guobing
2020-10-28 08:49:12 +08:00
parent 67f39ad813
commit a7b1f9b1bb
24 changed files with 5111 additions and 16 deletions
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16
driver/level2/Makefile
View File

@@ -413,7 +413,13 @@ XBLASOBJS += \
xtbmv_thread_RUU.$(SUFFIX) xtbmv_thread_RUN.$(SUFFIX) \
xtbmv_thread_RLU.$(SUFFIX) xtbmv_thread_RLN.$(SUFFIX) \
xtbmv_thread_CUU.$(SUFFIX) xtbmv_thread_CUN.$(SUFFIX) \
xtbmv_thread_CLU.$(SUFFIX) xtbmv_thread_CLN.$(SUFFIX) \
xtbmv_thread_CLU.$(SUFFIX) xtbmv_thread_CLN.$(SUFFIX)
ifeq ($(BUILD_BFLOAT16),1)
SBBLASOBJS += \
sbgemv_thread_n$(TSUFFIX).$(SUFFIX) \
sbgemv_thread_t$(TSUFFIX).$(SUFFIX)
endif
endif
@@ -3693,4 +3699,12 @@ xtrsv_CUU.$(SUFFIX) xtrsv_CUU.$(PSUFFIX) : ztrsv_L.c ../../param.h
xtrsv_CUN.$(SUFFIX) xtrsv_CUN.$(PSUFFIX) : ztrsv_L.c ../../param.h
$(CC) -c $(CFLAGS) -DXDOUBLE -DCOMPLEX -DTRANSA=4 -UUNIT $< -o $(@F)
ifeq ($(BUILD_BFLOAT16),1)
sbgemv_thread_n.$(SUFFIX) sbgemv_thread_n.$(PSUFFIX) : sbgemv_thread.c ../../common.h
$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE -UTRANSA -UCONJ -UXCONJ $< -o $(@F)
sbgemv_thread_t.$(SUFFIX) sbgemv_thread_t.$(PSUFFIX) : sbgemv_thread.c ../../common.h
$(CC) -c $(CFLAGS) -UCOMPLEX -UDOUBLE -DTRANSA -UCONJ -UXCONJ $< -o $(@F)
endif
include ../../Makefile.tail

149
driver/level2/sbgemv_thread.c Normal file
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@@ -0,0 +1,149 @@
/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin. */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* 1. Redistributions of source code must retain the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer. */
/* */
/* 2. Redistributions in binary form must reproduce the above */
/* copyright notice, this list of conditions and the following */
/* disclaimer in the documentation and/or other materials */
/* provided with the distribution. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
/* AUSTIN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, */
/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
/* DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT */
/* AUSTIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, */
/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE */
/* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR */
/* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT */
/* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
/* POSSIBILITY OF SUCH DAMAGE. */
/* */
/* The views and conclusions contained in the software and */
/* documentation are those of the authors and should not be */
/* interpreted as representing official policies, either expressed */
/* or implied, of The University of Texas at Austin. */
/*********************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include "common.h"
#ifndef TRANSA
#define SBGEMV SBGEMV_N
#else
#define SBGEMV SBGEMV_T
#endif
static int sbgemv_kernel(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *dummy1, FLOAT *dummy2, BLASLONG dummy3){
bfloat16 *a, *x;
float *y;
BLASLONG lda, incx, incy;
BLASLONG m_from, m_to, n_from, n_to;
a = (bfloat16 *)args->a;
x = (bfloat16 *)args->b;
y = (float *)args->c;
lda = args->lda;
incx = args->ldb;
incy = args->ldc;
#ifndef TRANSA // N
m_from = *(range_m + 0);
m_to = *(range_m + 1);
n_from = 0;
n_to = args -> n;
a += m_from;
y += m_from * incy;
#else // T
m_from = 0;
m_to = args->m;
n_from = *(range_n + 0);
n_to = *(range_n + 1);
a += n_from * lda;
y += n_from * incy;
#endif
SBGEMV(m_to - m_from, n_to - n_from, *((FLOAT *)(args->alpha)), a, lda, x, incx, *((FLOAT *)(args->beta)), y, incy);
return 0;
}
int CNAME(BLASLONG m, BLASLONG n, float alpha, bfloat16 *a, BLASLONG lda, bfloat16 *x, BLASLONG incx, float beta, float *y, BLASLONG incy, int threads)
{
blas_arg_t args;
blas_queue_t queue[MAX_CPU_NUMBER];
BLASLONG range[MAX_CPU_NUMBER + 1];
#ifndef TRANSA
BLASLONG width_for_split = m;
#else
BLASLONG width_for_split = n;
#endif
BLASLONG BLOCK_WIDTH = width_for_split/threads;
int mode = BLAS_BFLOAT16 | BLAS_REAL;
args.m = m;
args.n = n;
args.a = (void *)a;
args.b = (void *)x;
args.c = (void *)y;
args.lda = lda;
args.ldb = incx;
args.ldc = incy;
args.alpha = (void *)&alpha;
args.beta = (void *)&beta;
range[0] = 0;
int thread_idx;
for (thread_idx=0; thread_idx<threads; thread_idx++) {
if (thread_idx != threads-1) {
range[thread_idx + 1] = range[thread_idx] + BLOCK_WIDTH;
} else {
range[thread_idx + 1] = range[thread_idx] + width_for_split;
}
queue[thread_idx].mode = mode;
queue[thread_idx].routine = sbgemv_kernel;
queue[thread_idx].args = &args;
#ifndef TRANSA
queue[thread_idx].range_m = &range[thread_idx];
queue[thread_idx].range_n = NULL;
#else
queue[thread_idx].range_m = NULL;
queue[thread_idx].range_n = &range[thread_idx];
#endif
queue[thread_idx].sa = NULL;
queue[thread_idx].sb = NULL;
queue[thread_idx].next = &queue[thread_idx + 1];
width_for_split -= BLOCK_WIDTH;
}
if (thread_idx) {
queue[0].sa = NULL;
queue[0].sb = NULL;
queue[thread_idx - 1].next = NULL;
exec_blas(thread_idx, queue);
}
return 0;
}