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
|
// RUN: %libomp-compile-and-run
#include <stdio.h>
#include <math.h>
#include "omp_testsuite.h"
#define DOUBLE_DIGITS 20 /* dt^DOUBLE_DIGITS */
#define MAX_FACTOR 10
#define KNOWN_PRODUCT 3628800 /* 10! */
int test_omp_parallel_reduction()
{
int sum;
int known_sum;
double dsum;
double dknown_sum;
double dt=0.5; /* base of geometric row for + and - test*/
double rounding_error= 1.E-9;
int diff;
double ddiff;
int product;
int known_product;
int logic_and;
int logic_or;
int bit_and;
int bit_or;
int exclusiv_bit_or;
int logics[LOOPCOUNT];
int i;
double dpt;
int result;
sum =0;
dsum=0;
product=1;
logic_and=1;
logic_or=0;
bit_and=1;
bit_or=0;
exclusiv_bit_or=0;
result=0;
dt = 1./3.;
known_sum = (LOOPCOUNT*(LOOPCOUNT+1))/2;
/* Tests for integers */
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(+:sum)
for (i=1;i<=LOOPCOUNT;i++) {
sum=sum+i;
}
if(known_sum!=sum) {
result++;
fprintf(stderr,"Error in sum with integers: Result was %d instead of %d\n",sum,known_sum);
}
diff = (LOOPCOUNT*(LOOPCOUNT+1))/2;
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(-:diff)
for (i=1;i<=LOOPCOUNT;++i) {
diff=diff-i;
}
if(diff != 0) {
result++;
fprintf(stderr,"Error in difference with integers: Result was %d instead of 0.\n",diff);
}
/* Tests for doubles */
dsum=0;
dpt=1;
for (i=0;i<DOUBLE_DIGITS;++i) {
dpt*=dt;
}
dknown_sum = (1-dpt)/(1-dt);
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(+:dsum)
for (i=0;i<DOUBLE_DIGITS;++i) {
dsum += pow(dt,i);
}
if( fabs(dsum-dknown_sum) > rounding_error ) {
result++;
fprintf(stderr,"Error in sum with doubles: Result was %f instead of %f (Difference: %E)\n",dsum,dknown_sum, dsum-dknown_sum);
}
dpt=1;
for (i=0;i<DOUBLE_DIGITS;++i) {
dpt*=dt;
}
fprintf(stderr,"\n");
ddiff = (1-dpt)/(1-dt);
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(-:ddiff)
for (i=0;i<DOUBLE_DIGITS;++i) {
ddiff -= pow(dt,i);
}
if( fabs(ddiff) > rounding_error) {
result++;
fprintf(stderr,"Error in Difference with doubles: Result was %E instead of 0.0\n",ddiff);
}
/* Tests for product of integers */
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(*:product)
for(i=1;i<=MAX_FACTOR;i++) {
product *= i;
}
known_product = KNOWN_PRODUCT;
if(known_product != product) {
result++;
fprintf(stderr,"Error in Product with integers: Result was %d instead of %d\n\n",product,known_product);
}
/* Tests for logical and */
for(i=0;i<LOOPCOUNT;i++) {
logics[i]=1;
}
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(&&:logic_and)
for(i=0;i<LOOPCOUNT;++i) {
logic_and = (logic_and && logics[i]);
}
if(!logic_and) {
result++;
fprintf(stderr,"Error in logic AND part 1.\n");
}
logic_and = 1;
logics[LOOPCOUNT/2]=0;
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(&&:logic_and)
for(i=0;i<LOOPCOUNT;++i) {
logic_and = logic_and && logics[i];
}
if(logic_and) {
result++;
fprintf(stderr,"Error in logic AND part 2.\n");
}
/* Tests for logical or */
for(i=0;i<LOOPCOUNT;i++) {
logics[i]=0;
}
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(||:logic_or)
for(i=0;i<LOOPCOUNT;++i) {
logic_or = logic_or || logics[i];
}
if(logic_or) {
result++;
fprintf(stderr,"Error in logic OR part 1.\n");
}
logic_or = 0;
logics[LOOPCOUNT/2]=1;
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(||:logic_or)
for(i=0;i<LOOPCOUNT;++i) {
logic_or = logic_or || logics[i];
}
if(!logic_or) {
result++;
fprintf(stderr,"Error in logic OR part 2.\n");
}
/* Tests for bitwise and */
for(i=0;i<LOOPCOUNT;++i) {
logics[i]=1;
}
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(&:bit_and)
for(i=0;i<LOOPCOUNT;++i) {
bit_and = (bit_and & logics[i]);
}
if(!bit_and) {
result++;
fprintf(stderr,"Error in BIT AND part 1.\n");
}
bit_and = 1;
logics[LOOPCOUNT/2]=0;
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(&:bit_and)
for(i=0;i<LOOPCOUNT;++i) {
bit_and = bit_and & logics[i];
}
if(bit_and) {
result++;
fprintf(stderr,"Error in BIT AND part 2.\n");
}
for(i=0;i<LOOPCOUNT;i++) {
logics[i]=0;
}
/* Tests for bitwise or */
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(|:bit_or)
for(i=0;i<LOOPCOUNT;++i) {
bit_or = bit_or | logics[i];
}
if(bit_or) {
result++;
fprintf(stderr,"Error in BIT OR part 1\n");
}
bit_or = 0;
logics[LOOPCOUNT/2]=1;
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(|:bit_or)
for(i=0;i<LOOPCOUNT;++i) {
bit_or = bit_or | logics[i];
}
if(!bit_or) {
result++;
fprintf(stderr,"Error in BIT OR part 2\n");
}
for(i=0;i<LOOPCOUNT;i++) {
logics[i]=0;
}
/* Tests for bitwise xor */
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(^:exclusiv_bit_or)
for(i=0;i<LOOPCOUNT;++i) {
exclusiv_bit_or = exclusiv_bit_or ^ logics[i];
}
if(exclusiv_bit_or) {
result++;
fprintf(stderr,"Error in EXCLUSIV BIT OR part 1\n");
}
exclusiv_bit_or = 0;
logics[LOOPCOUNT/2]=1;
#pragma omp parallel for schedule(dynamic,1) private(i) reduction(^:exclusiv_bit_or)
for(i=0;i<LOOPCOUNT;++i) {
exclusiv_bit_or = exclusiv_bit_or ^ logics[i];
}
if(!exclusiv_bit_or) {
result++;
fprintf(stderr,"Error in EXCLUSIV BIT OR part 2\n");
}
/*printf("\nResult:%d\n",result);*/
return (result==0);
}
int main()
{
int i;
int num_failed=0;
for(i = 0; i < REPETITIONS; i++) {
if(!test_omp_parallel_reduction()) {
num_failed++;
}
}
return num_failed;
}
|
