int main (int argc, char *argv[]) { void *ptr; int err = 0; hbw_set_policy(HBW_POLICY_BIND); printf ("Allocating 400 KB with 1GB pages\n"); err = hbw_posix_memalign_psize (&ptr, 1073741824, 409600, HBW_PAGESIZE_1GB); if (err) { fprintf(stderr, "ERROR: hbw_posix_memalign_size()\n"); } if (!err) { memset (ptr, 0, 409600); printf ("Reallocing 100KB with 1GB pages\n"); ptr = hbw_realloc (ptr, 102400); if (ptr == NULL) { fprintf(stderr, "ERROR: hbw_realloc()\n"); err = -1; } } if (!err) { memset (ptr, 0, 102400); printf ("Reallocing 1GB with 1GB pages\n"); ptr = hbw_realloc (ptr, 1073741824); if (ptr == NULL) { fprintf(stderr, "ERROR: hbw_realloc()"); err = -1; } } if (!err) { memset (ptr, 0, 1073741824); printf ("Reallocing 1073742848 with 1GB pages\n"); ptr = hbw_realloc (ptr, 1073742848); if (ptr == NULL) { fprintf(stderr, "ERROR: hbw_realloc()\n"); err = -1; } } if (!err) { memset (ptr, 0, 1073742848); } if (ptr) { hbw_free(ptr); } return err; }
int main(int argc, char **argv) { const size_t size = 512; char *default_str = NULL; char *hbw_str = NULL; char *hbw_hugetlb_str = NULL; int err = 0; default_str = (char *)malloc(size); if (default_str == NULL) { perror("malloc()"); fprintf(stderr, "Unable to allocate default string\n"); err = errno ? -errno : 1; goto exit; } hbw_str = (char *)hbw_malloc(size); if (hbw_str == NULL) { perror("hbw_malloc()"); fprintf(stderr, "Unable to allocate hbw string\n"); err = errno ? -errno : 1; goto exit; } err = hbw_posix_memalign_psize((void **)&hbw_hugetlb_str, 2097152, size, HBW_PAGESIZE_2MB); if (err) { perror("hbw_posix_memalign()"); fprintf(stderr, "Unable to allocate hbw hugetlb string\n"); err = errno ? -errno : 1; goto exit; } sprintf(default_str, "Hello world from standard memory\n"); sprintf(hbw_str, "Hello world from high bandwidth memory\n"); sprintf(hbw_hugetlb_str, "Hello world from high bandwidth 2 MB paged memory\n"); fprintf(stdout, "%s", default_str); fprintf(stdout, "%s", hbw_str); fprintf(stdout, "%s", hbw_hugetlb_str); exit: if (hbw_hugetlb_str) { hbw_free(hbw_hugetlb_str); } if (hbw_str) { hbw_free(hbw_str); } if (default_str) { free(default_str); } return err; }