#include <unistd.h>
#endif
-#define NUM_ELEMS 1000
+#define NUM_ELEMS 100
#define MAX_NPROBE nproc
#define MIN_NPROBE 1
#define ELEM_PER_ROW 16
-#define MIN(X,Y) ((X < Y) ? (X) : (Y))
-#define MAX(X,Y) ((X > Y) ? (X) : (Y))
+#define MYMIN(X,Y) ((X < Y) ? (X) : (Y))
+#define MYMAX(X,Y) ((X > Y) ? (X) : (Y))
/* Linked list pointer */
typedef struct {
- int rank;
+ int rank;
MPI_Aint disp;
} llist_ptr_t;
} llist_elem_t;
static const llist_ptr_t nil = { -1, (MPI_Aint) MPI_BOTTOM };
+
static const int verbose = 0;
static const int print_perf = 0;
-/* List of locally allocated list elements. */
-static llist_elem_t **my_elems = NULL;
-static int my_elems_size = 0;
-static int my_elems_count = 0;
-
/* Allocate a new shared linked list element */
-MPI_Aint alloc_elem(int value, MPI_Win win) {
+static MPI_Aint alloc_elem(int value, MPI_Win win, llist_elem_t ***my_elems, int* my_elems_size, int* my_elems_count)
+{
MPI_Aint disp;
llist_elem_t *elem_ptr;
/* Allocate the new element and register it with the window */
MPI_Alloc_mem(sizeof(llist_elem_t), MPI_INFO_NULL, &elem_ptr);
elem_ptr->value = value;
- elem_ptr->next = nil;
+ elem_ptr->next = nil;
MPI_Win_attach(win, elem_ptr, sizeof(llist_elem_t));
/* Add the element to the list of local elements so we can free it later. */
- if (my_elems_size == my_elems_count) {
- my_elems_size += 100;
- my_elems = realloc(my_elems, my_elems_size*sizeof(void*));
+ if (*my_elems_size == *my_elems_count) {
+ *my_elems_size += 100;
+ *my_elems = realloc(*my_elems, *my_elems_size * sizeof(void *));
}
- my_elems[my_elems_count] = elem_ptr;
- my_elems_count++;
+ (*my_elems)[*my_elems_count] = elem_ptr;
+ (*my_elems_count)++;
MPI_Get_address(elem_ptr, &disp);
return disp;
}
-int main(int argc, char **argv) {
- int procid, nproc, i, j, my_nelem;
- int pollint = 0;
- double time;
- MPI_Win llist_win;
- llist_ptr_t head_ptr, tail_ptr;
+int main(int argc, char **argv)
+{
+ int procid, nproc, i, j, my_nelem;
+ int pollint = 0;
+ double time;
+ MPI_Win llist_win;
+ llist_ptr_t head_ptr, tail_ptr;
+ /* List of locally allocated list elements. */
+ llist_elem_t **my_elems = NULL;
+ int my_elems_size = 0;
+ int my_elems_count = 0;
MPI_Init(&argc, &argv);
/* Process 0 creates the head node */
if (procid == 0)
- head_ptr.disp = alloc_elem(procid, llist_win);
+ head_ptr.disp = alloc_elem(procid, llist_win, &my_elems, &my_elems_size, &my_elems_count);
/* Broadcast the head pointer to everyone */
head_ptr.rank = 0;
i = 1;
else
i = 0;
- my_nelem = NUM_ELEMS/nproc;
+ my_nelem = NUM_ELEMS / nproc;
if (procid < NUM_ELEMS % nproc)
my_nelem++;
MPI_Barrier(MPI_COMM_WORLD);
time = MPI_Wtime();
- for ( ; i < my_nelem; i++) {
+ for (; i < my_nelem; i++) {
llist_ptr_t new_elem_ptr;
int success = 0;
+ MTEST_VG_MEM_INIT(&new_elem_ptr, sizeof(llist_ptr_t));
+
/* Create a new list element and register it with the window */
new_elem_ptr.rank = procid;
- new_elem_ptr.disp = alloc_elem(procid, llist_win);
+ new_elem_ptr.disp = alloc_elem(procid, llist_win, &my_elems, &my_elems_size, &my_elems_count);
/* Append the new node to the list. This might take multiple attempts if
- others have already appended and our tail pointer is stale. */
+ * others have already appended and our tail pointer is stale. */
do {
int flag;
/* The tail is at my left neighbor, append my element. */
- if (tail_ptr.rank == (procid + nproc-1) % nproc)
- {
+ if (tail_ptr.rank == (procid + nproc - 1) % nproc) {
if (verbose)
- printf("%d: Appending to <%d, %p>\n", procid, tail_ptr.rank, (void*) tail_ptr.disp);
+ printf("%d: Appending to <%d, %p>\n", procid, tail_ptr.rank,
+ (void *) tail_ptr.disp);
MPI_Win_lock(MPI_LOCK_EXCLUSIVE, tail_ptr.rank, 0, llist_win);
#if USE_ACC
MPI_Accumulate(&new_elem_ptr, sizeof(llist_ptr_t), MPI_BYTE, tail_ptr.rank,
- (MPI_Aint) &(((llist_elem_t*)tail_ptr.disp)->next), sizeof(llist_ptr_t),
- MPI_BYTE, MPI_REPLACE, llist_win);
+ (MPI_Aint) & (((llist_elem_t *) tail_ptr.disp)->next),
+ sizeof(llist_ptr_t), MPI_BYTE, MPI_REPLACE, llist_win);
#else
MPI_Put(&new_elem_ptr, sizeof(llist_ptr_t), MPI_BYTE, tail_ptr.rank,
- (MPI_Aint) &(((llist_elem_t*)tail_ptr.disp)->next), sizeof(llist_ptr_t),
+ (MPI_Aint) & (((llist_elem_t *) tail_ptr.disp)->next), sizeof(llist_ptr_t),
MPI_BYTE, llist_win);
#endif
MPI_Win_unlock(tail_ptr.rank, llist_win);
}
/* Otherwise, chase the tail. */
- else
- {
+ else {
llist_ptr_t next_tail_ptr;
MPI_Win_lock(MPI_LOCK_EXCLUSIVE, tail_ptr.rank, 0, llist_win);
#if USE_ACC
- MPI_Get_accumulate( NULL, 0, MPI_DATATYPE_NULL, &next_tail_ptr,
- sizeof(llist_ptr_t), MPI_BYTE, tail_ptr.rank,
- (MPI_Aint) &(((llist_elem_t*)tail_ptr.disp)->next),
- sizeof(llist_ptr_t), MPI_BYTE, MPI_NO_OP, llist_win);
+ MPI_Get_accumulate(NULL, 0, MPI_DATATYPE_NULL, &next_tail_ptr,
+ sizeof(llist_ptr_t), MPI_BYTE, tail_ptr.rank,
+ (MPI_Aint) & (((llist_elem_t *) tail_ptr.disp)->next),
+ sizeof(llist_ptr_t), MPI_BYTE, MPI_NO_OP, llist_win);
#else
MPI_Get(&next_tail_ptr, sizeof(llist_ptr_t), MPI_BYTE, tail_ptr.rank,
- (MPI_Aint) &(((llist_elem_t*)tail_ptr.disp)->next),
+ (MPI_Aint) & (((llist_elem_t *) tail_ptr.disp)->next),
sizeof(llist_ptr_t), MPI_BYTE, llist_win);
#endif
MPI_Win_unlock(tail_ptr.rank, llist_win);
if (next_tail_ptr.rank != nil.rank) {
if (verbose)
- printf("%d: Chasing to <%d, %p>\n", procid, next_tail_ptr.rank, (void*) next_tail_ptr.disp);
+ printf("%d: Chasing to <%d, %p>\n", procid, next_tail_ptr.rank,
+ (void *) next_tail_ptr.disp);
tail_ptr = next_tail_ptr;
- pollint = MAX(MIN_NPROBE, pollint/2);
+ pollint = MYMAX(MIN_NPROBE, pollint / 2);
}
else {
for (j = 0; j < pollint; j++)
- MPI_Iprobe(MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &flag, MPI_STATUS_IGNORE);
+ MPI_Iprobe(MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &flag,
+ MPI_STATUS_IGNORE);
- pollint = MIN(MAX_NPROBE, pollint*2);
+ pollint = MYMIN(MAX_NPROBE, pollint * 2);
}
}
} while (!success);
time = MPI_Wtime() - time;
/* Traverse the list and verify that all processes inserted exactly the correct
- number of elements. */
+ * number of elements. */
if (procid == 0) {
- int errors = 0;
+ int errors = 0;
int *counts, count = 0;
- counts = (int*) malloc(sizeof(int) * nproc);
+ counts = (int *) malloc(sizeof(int) * nproc);
assert(counts != NULL);
for (i = 0; i < nproc; i++)
MPI_Win_unlock_all(llist_win);
if (verbose)
- printf("\n\n");
+ printf("\n\n");
/* Verify the counts we collected */
for (i = 0; i < nproc; i++) {
int expected;
- expected = NUM_ELEMS/nproc;
+ expected = NUM_ELEMS / nproc;
if (i < NUM_ELEMS % nproc)
expected++;
if (counts[i] != expected) {
- printf("Error: Rank %d inserted %d elements, expected %d\n", i, counts[i], expected);
+ printf("Error: Rank %d inserted %d elements, expected %d\n", i, counts[i],
+ expected);
errors++;
}
}
MPI_Reduce(&time, &max_time, 1, MPI_DOUBLE, MPI_MAX, 0, MPI_COMM_WORLD);
if (procid == 0) {
- printf("Total time = %0.2f sec, elem/sec = %0.2f, sec/elem = %0.2f usec\n", max_time, NUM_ELEMS/max_time, max_time/NUM_ELEMS*1.0e6);
+ printf("Total time = %0.2f sec, elem/sec = %0.2f, sec/elem = %0.2f usec\n", max_time,
+ NUM_ELEMS / max_time, max_time / NUM_ELEMS * 1.0e6);
}
}
MPI_Win_free(&llist_win);
/* Free all the elements in the list */
- for ( ; my_elems_count > 0; my_elems_count--)
- MPI_Free_mem(my_elems[my_elems_count-1]);
+ for (; my_elems_count > 0; my_elems_count--)
+ MPI_Free_mem(my_elems[my_elems_count - 1]);
MPI_Finalize();
return 0;
