7eb55504b1
This patch adds support for bfloat16 data type matrix multiplication kernel. For architectures that don't support bfloat16, it is defined as unsigned short (2 bytes). Default unroll sizes can be changed as per architecture as done for SGEMM and for now 8 and 4 are used for M and N. Size of ncopy/tcopy can be changed as per architecture requirement and for now, size 2 is used. Added shgemm in kernel/power/KERNEL.POWER9 and tested in powerpc64le and powerpc64. For reference, added a small test compare_sgemm_shgemm.c to compare sgemm and shgemm output. This patch does not cover OpenBLAS test, benchmark and lapack tests for shgemm. Complex type implementation can be discussed and added once this is approved.
96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/***************************************************************************
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Copyright (c) 2020, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include <stdio.h>
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#include <stdint.h>
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#include "common.h"
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#define SGEMM BLASFUNC(sgemm)
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#define SHGEMM BLASFUNC(shgemm)
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typedef union
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{
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unsigned short v;
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struct
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{
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#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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unsigned short s:1;
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unsigned short e:8;
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unsigned short m:7;
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#else
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unsigned short m:7;
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unsigned short e:8;
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unsigned short s:1;
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#endif
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} bits;
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} bfloat16_bits;
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int
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main (int argc, char *argv[])
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{
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int m, n, k;
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int i, j, l;
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int ret = 0;
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int loop = 20;
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char transA = 'N', transB = 'N';
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float alpha = 1.0, beta = 0.0;
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char transa = 'N';
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char transb = 'N';
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for (int x = 0; x <= loop; x++)
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{
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m = k = n = x;
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float A[m * k];
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float B[k * n];
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float C[m * n];
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bfloat16_bits AA[m * k], BB[k * n];
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float CC[m * n];
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for (int j = 0; j < m; j++)
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{
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for (int i = 0; i < m; i++)
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{
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A[j * k + i] = j * 9.0;
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B[j * k + i] = i * 2.0;
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C[j * k + i] = 0;
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AA[j * k + i].v = *(uint32_t *) & A[j * k + i] >> 16;
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BB[j * k + i].v = *(uint32_t *) & B[j * k + i] >> 16;
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CC[j * k + i] = 0;
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}
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}
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SGEMM (&transA, &transB, &m, &n, &k, &alpha, A,
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&m, B, &k, &beta, C, &m);
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SHGEMM (&transA, &transB, &m, &n, &k, &alpha, AA,
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&m, BB, &k, &beta, CC, &m);
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for (i = 0; i < n; i++)
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for (j = 0; j < m; j++)
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for (l = 0; l < k; l++)
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if (CC[i * m + j] != C[i * m + j])
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ret++;
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}
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fprintf (stderr, "Return code: %d\n", ret);
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return ret;
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}
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