blob: be235d3d9c5320168046546f76ddf9b89973d705 (
plain)
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
|
// This test checks that #pragma omp target update from(data[0:2:3]) correctly
// updates every third element (stride 3) from the device to the host, partially
// across the array using dynamically allocated memory.
// RUN: %libomptarget-compile-run-and-check-generic
// XFAIL: intelgpu
#include <omp.h>
#include <stdio.h>
#include <stdlib.h>
int main() {
int len = 11;
double *data = (double *)calloc(len, sizeof(double));
#pragma omp target map(tofrom : data[0 : len])
{
for (int i = 0; i < len; i++)
data[i] = i;
}
// Initial values
printf("original host array values:\n");
for (int i = 0; i < len; i++)
printf("%f\n", data[i]);
printf("\n");
#pragma omp target data map(to : data[0 : len])
{
#pragma omp target
for (int i = 0; i < len; i++)
data[i] += i;
#pragma omp target update from(data[0 : 2 : 3]) // indices 0,3 only
}
printf("device array values after update from:\n");
for (int i = 0; i < len; i++)
printf("%f\n", data[i]);
printf("\n");
// CHECK: original host array values:
// CHECK-NEXT: 0.000000
// CHECK-NEXT: 1.000000
// CHECK-NEXT: 2.000000
// CHECK-NEXT: 3.000000
// CHECK-NEXT: 4.000000
// CHECK-NEXT: 5.000000
// CHECK-NEXT: 6.000000
// CHECK-NEXT: 7.000000
// CHECK-NEXT: 8.000000
// CHECK-NEXT: 9.000000
// CHECK-NEXT: 10.000000
// CHECK: device array values after update from:
// CHECK-NEXT: 0.000000
// CHECK-NEXT: 1.000000
// CHECK-NEXT: 2.000000
// CHECK-NEXT: 6.000000
// CHECK-NEXT: 4.000000
// CHECK-NEXT: 5.000000
// CHECK-NEXT: 6.000000
// CHECK-NEXT: 7.000000
// CHECK-NEXT: 8.000000
// CHECK-NEXT: 9.000000
// CHECK-NEXT: 10.000000
free(data);
return 0;
}
|
