1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
|
/*
BLIS
An object-based framework for developing high-performance BLAS-like
libraries.
Copyright (C) 2014, The University of Texas at Austin
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- 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.
- Neither the name(s) of the copyright holder(s) nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"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 COPYRIGHT
HOLDER 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.
*/
#include "blis.h"
#if 1
// An implementation that attempts to facilitate emission of vectorized
// instructions via constant loop bounds + #pragma omp simd directives.
#undef GENTFUNC
#define GENTFUNC( ctype, ch, opname, arch, suf, mr, nr ) \
\
void PASTEMAC3(ch,opname,arch,suf) \
( \
dim_t m, \
dim_t n, \
dim_t k, \
ctype* restrict alpha, \
ctype* restrict a, \
ctype* restrict b, \
ctype* restrict beta, \
ctype* restrict c, inc_t rs_c, inc_t cs_c, \
auxinfo_t* restrict data, \
cntx_t* restrict cntx \
) \
{ \
ctype ab[ BLIS_STACK_BUF_MAX_SIZE \
/ sizeof( ctype ) ] \
__attribute__((aligned(BLIS_STACK_BUF_ALIGN_SIZE))); \
const inc_t rs_ab = nr; \
const inc_t cs_ab = 1; \
\
const inc_t cs_a = mr; \
const inc_t rs_b = nr; \
\
\
/* Initialize the accumulator elements in ab to zero. */ \
PRAGMA_SIMD \
for ( dim_t i = 0; i < mr * nr; ++i ) \
{ \
PASTEMAC(ch,set0s)( ab[ i ] ); \
} \
\
/* Perform a series of k rank-1 updates into ab. */ \
for ( dim_t l = 0; l < k; ++l ) \
{ \
for ( dim_t i = 0; i < mr; ++i ) \
{ \
PRAGMA_SIMD \
for ( dim_t j = 0; j < nr; ++j ) \
{ \
PASTEMAC(ch,dots) \
( \
a[ i ], \
b[ j ], \
ab[ i*rs_ab + j*cs_ab ] \
); \
} \
} \
\
a += cs_a; \
b += rs_b; \
} \
\
/* Scale the result in ab by alpha. */ \
PRAGMA_SIMD \
for ( dim_t i = 0; i < mr * nr; ++i ) \
{ \
PASTEMAC(ch,scals)( *alpha, ab[ i ] ); \
} \
\
/* Output/accumulate intermediate result ab based on the storage
of c and the value of beta. */ \
if ( cs_c == 1 ) \
{ \
/* C is row-stored. */ \
\
if ( PASTEMAC(ch,eq0)( *beta ) ) \
{ \
for ( dim_t i = 0; i < m; ++i ) \
for ( dim_t j = 0; j < n; ++j ) \
PASTEMAC(ch,copys) \
( \
ab[ i*rs_ab + j*cs_ab ], \
c [ i*rs_c + j*1 ] \
); \
} \
else \
{ \
for ( dim_t i = 0; i < m; ++i ) \
for ( dim_t j = 0; j < n; ++j ) \
PASTEMAC(ch,xpbys) \
( \
ab[ i*rs_ab + j*cs_ab ], \
*beta, \
c [ i*rs_c + j*1 ] \
); \
} \
} \
else \
{ \
/* C is column-stored or general-stored. */ \
\
if ( PASTEMAC(ch,eq0)( *beta ) ) \
{ \
for ( dim_t j = 0; j < n; ++j ) \
for ( dim_t i = 0; i < m; ++i ) \
PASTEMAC(ch,copys) \
( \
ab[ i*rs_ab + j*cs_ab ], \
c [ i*rs_c + j*cs_c ] \
); \
} \
else \
{ \
for ( dim_t j = 0; j < n; ++j ) \
for ( dim_t i = 0; i < m; ++i ) \
PASTEMAC(ch,xpbys) \
( \
ab[ i*rs_ab + j*cs_ab ], \
*beta, \
c [ i*rs_c + j*cs_c ] \
); \
} \
} \
}
//INSERT_GENTFUNC_BASIC2( gemm, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX )
GENTFUNC( float, s, gemm, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 16 )
GENTFUNC( double, d, gemm, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 8 )
GENTFUNC( scomplex, c, gemm, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 8 )
GENTFUNC( dcomplex, z, gemm, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX, 4, 4 )
#else
// An implementation that uses variable loop bounds (queried from the context)
// and makes no use of #pragma omp simd.
#undef GENTFUNC
#define GENTFUNC( ctype, ch, opname, arch, suf ) \
\
void PASTEMAC3(ch,opname,arch,suf) \
( \
dim_t m, \
dim_t n, \
dim_t k, \
ctype* restrict alpha, \
ctype* restrict a, \
ctype* restrict b, \
ctype* restrict beta, \
ctype* restrict c, inc_t rs_c, inc_t cs_c, \
auxinfo_t* restrict data, \
cntx_t* restrict cntx \
) \
{ \
const num_t dt = PASTEMAC(ch,type); \
\
const dim_t mr = bli_cntx_get_blksz_def_dt( dt, BLIS_MR, cntx ); \
const dim_t nr = bli_cntx_get_blksz_def_dt( dt, BLIS_NR, cntx ); \
\
const inc_t packmr = bli_cntx_get_blksz_max_dt( dt, BLIS_MR, cntx ); \
const inc_t packnr = bli_cntx_get_blksz_max_dt( dt, BLIS_NR, cntx ); \
\
const inc_t cs_a = packmr; \
\
const inc_t rs_b = packnr; \
\
ctype ab[ BLIS_STACK_BUF_MAX_SIZE \
/ sizeof( ctype ) ] \
__attribute__((aligned(BLIS_STACK_BUF_ALIGN_SIZE))); \
const inc_t rs_ab = 1; \
const inc_t cs_ab = mr; \
\
dim_t l, j, i; \
\
ctype ai; \
ctype bj; \
\
\
/* Initialize the accumulator elements in ab to zero. */ \
for ( i = 0; i < m * n; ++i ) \
{ \
PASTEMAC(ch,set0s)( *(ab + i) ); \
} \
\
/* Perform a series of k rank-1 updates into ab. */ \
for ( l = 0; l < k; ++l ) \
{ \
ctype* restrict abij = ab; \
\
/* In an optimized implementation, these two loops over MR and NR
are typically fully unrolled. */ \
for ( j = 0; j < n; ++j ) \
{ \
bj = *(b + j); \
\
for ( i = 0; i < m; ++i ) \
{ \
ai = *(a + i); \
\
PASTEMAC(ch,dots)( ai, bj, *abij ); \
\
abij += rs_ab; \
} \
} \
\
a += cs_a; \
b += rs_b; \
} \
\
/* Scale the result in ab by alpha. */ \
for ( i = 0; i < m * n; ++i ) \
{ \
PASTEMAC(ch,scals)( *alpha, *(ab + i) ); \
} \
\
/* If beta is zero, overwrite c with the scaled result in ab. Otherwise,
scale by beta and then add the scaled redult in ab. */ \
if ( PASTEMAC(ch,eq0)( *beta ) ) \
{ \
PASTEMAC(ch,copys_mxn)( m, \
n, \
ab, rs_ab, cs_ab, \
c, rs_c, cs_c ); \
} \
else \
{ \
PASTEMAC(ch,xpbys_mxn)( m, \
n, \
ab, rs_ab, cs_ab, \
beta, \
c, rs_c, cs_c ); \
} \
}
INSERT_GENTFUNC_BASIC2( gemm, BLIS_CNAME_INFIX, BLIS_REF_SUFFIX )
#endif
|
