From b29a98b7921aed35aeba5b3247034588a9f055d8 Mon Sep 17 00:00:00 2001
From: Irene Wiliudarsan <irenehuang189@gmail.com>
Date: Fri, 12 Feb 2016 21:44:46 +0700
Subject: [PATCH] Fix bucket sort
---
bucket_sort | Bin 13286 -> 13447 bytes
bucket_sort.c | 266 ++++++++++++++++++++++++++------------------------
laporan.txt | 25 ++++-
3 files changed, 160 insertions(+), 131 deletions(-)
diff --git a/bucket_sort b/bucket_sort
index c94acb33e0c63c86de8eed161d60619e74b0f0bb..7570f4683e5bd63db2a2ed625f0729c8744a52da 100755
GIT binary patch
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diff --git a/bucket_sort.c b/bucket_sort.c
index 5de4d6c..83a990e 100644
--- a/bucket_sort.c
+++ b/bucket_sort.c
@@ -5,147 +5,153 @@
#include <assert.h>
int *create_rand_nums(int num_elements) {
- int *rand_nums = (int *)malloc(sizeof(int) * num_elements);
- assert(rand_nums != NULL);
- int i;
- for (i = 0; i < num_elements; i++) {
- rand_nums[i] = rand()%100 + 1;
- printf("%d ", rand_nums[i]);
- }
- printf("\n");
- return rand_nums;
+ int *rand_nums = (int *)malloc(sizeof(int) * num_elements);
+ assert(rand_nums != NULL);
+ int i;
+ for (i = 0; i < num_elements; i++) {
+ rand_nums[i] = rand()%RAND_MAX + 1;
+ }
+ return rand_nums;
}
void searchMaxMin(int *array, int numElements, int *max, int *min) {
- int i;
- *min = array[0];
- *max = array[0];
- for (i=1; i<numElements; i++) {
- if (*min > array[i]) {
- *min = array[i];
- }
- if (*max < array[i]) {
- *max = array[i];
- }
- }
+ int i;
+ *min = array[0];
+ *max = array[0];
+ for (i=1; i<numElements; i++) {
+ if (*min > array[i]) {
+ *min = array[i];
+ }
+ if (*max < array[i]) {
+ *max = array[i];
+ }
+ }
}
void divideBucket(int max, int min, int bucketNum, int *result) {
- int gap = (max-min)/bucketNum;
- int remain = (max-min)%bucketNum;
- int i;
- result = (int *)malloc(sizeof(int) * (bucketNum+1));
- result[0] = min;
- printf("%d\n", result[0]);
- for (i=1; i<bucketNum; i++) {
- result[i] = result[i-1] + gap;
- printf("%d ", result[i]);
- }
- result[i+1] = max;
- printf("%d\n", result[i+1]);
+ int gap = (max-min)/bucketNum;
+ int remain = (max-min)%bucketNum;
+ int i;
+
+ result[0] = min;
+ for (i=1; i<bucketNum; i++) {
+ result[i] = result[i-1] + gap;
+ }
+ result[i] = max;
}
void sort(int *array, int num_elements) {
- int sum = 0;
- int i, j, k;
- for (i = 1; i <= num_elements-1; i++) {
- j = i;
-
- while(j>0 && array[j] < array[j-1]) {
- k = array[j];
- array[j] = array[j-1];
- array[j-1] = k;
- j--;
- }
- }
+ int sum = 0;
+ int i, j, k;
+ for (i = 1; i <= num_elements-1; i++) {
+ j = i;
+
+ while(j>0 && array[j] < array[j-1]) {
+ k = array[j];
+ array[j] = array[j-1];
+ array[j-1] = k;
+ j--;
+ }
+ }
}
int main(int argc, char** argv) {
- int bucketNum, rank, dest, source, rc, count, tag=1;
- MPI_Status Stat;
-
- MPI_Init(&argc,&argv);
- MPI_Comm_size(MPI_COMM_WORLD, &bucketNum);
- MPI_Comm_rank(MPI_COMM_WORLD, &rank);
-
- int numElements = atoi(argv[1]);
-
- if (rank == 0) {
- // Random array
- int *num = NULL;
- num = create_rand_nums(numElements);
-
- int min, max;
- searchMaxMin(num, numElements, &max, &min);
- printf("%d %d\n", max, min);
-
- int *bucketRange = NULL;
- divideBucket(max, min, bucketNum, bucketRange);
-
- // Bagi angka random ke bucket
- int buckets[bucketNum][numElements];
- int bucketsSize[bucketNum];
- int i;
- for (i=0; i<bucketNum; i++) {
- bucketsSize[i] = 0;
- }
-
- int j, isFound;
- for (i=0; i<numElements; i++) {
- j = 0;
- isFound = 0;
- while (j<bucketNum && !isFound) {
- if ((num[i] >= bucketRange[j]) && (num[i] < bucketRange[j+1]-1)) {
- bucketsSize[j]++;
- buckets[j][bucketsSize[j]] = num[i];
- isFound = 1;
- } else {
- j++;
- }
- }
- }
- for (i=0; i<bucketNum; i++) {
- for (j=0; j<bucketsSize[i]; j++) {
- printf("%d ", buckets[j]);
- }
- printf("\n");
- }
-
- // Kirim
- for (i=1; i<bucketNum; i++) {
- rc = MPI_Send(&bucketsSize[i], 1, MPI_INT, i, tag, MPI_COMM_WORLD);
- rc = MPI_Send(&buckets[i], bucketsSize[i], MPI_INT, i, tag, MPI_COMM_WORLD);
- }
-
- // Sort diri sendiri
- sort(buckets[0], bucketsSize[0]);
- for (i=0; i<bucketsSize[0]; i++) {
- printf("%d ", buckets[0][i]);
- }
-
- for (i=1; i<bucketNum; i++) {
- int size = bucketsSize[i];
- int temp[size];
- rc = MPI_Recv(&temp, bucketsSize[i], MPI_INT, i, tag, MPI_COMM_WORLD, &Stat);
-
- for (i=0; i<size; i++) {
- printf("%d ", temp[i]);
- }
- }
- } else {
- int bucketSize;
- rc = MPI_Recv(&bucketSize, 1, MPI_INT, source, tag, MPI_COMM_WORLD, &Stat);
-
- int *numIn;
- source = 0;
- rc = MPI_Recv(&numIn, bucketSize, MPI_INT, source, tag, MPI_COMM_WORLD, &Stat);
-
- // Sorting
- sort(numIn, bucketSize);
- dest = 0;
- rc = MPI_Send(&numIn, bucketSize, MPI_INT, dest, tag, MPI_COMM_WORLD);
- }
-
- MPI_Finalize();
+ int bucketNum, rank, dest, source, rc, count, tag=1;
+ clock_t beginTime, endTime;
+ MPI_Status Stat;
+
+ beginTime = clock();
+ MPI_Init(&argc,&argv);
+ MPI_Comm_size(MPI_COMM_WORLD, &bucketNum);
+ MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+
+ int numElements = atoi(argv[1]);
+
+
+ if (rank == 0) {
+ // Random array
+ int *num = NULL;
+ num = create_rand_nums(numElements);
+
+ int min, max;
+ searchMaxMin(num, numElements, &max, &min);
+
+ int *bucketRange = NULL;
+ bucketRange = (int *)malloc(sizeof(int) * (bucketNum+1));
+ divideBucket(max, min, bucketNum, bucketRange);
+
+ // Bagi angka random ke bucket
+ int buckets[bucketNum][numElements];
+ int bucketsSize[bucketNum];
+ int i;
+ for (i=0; i<bucketNum; i++) {
+ bucketsSize[i] = 0;
+ }
+
+ int j, isFound;
+ for (i=0; i<numElements; i++) {
+ j = 0;
+ isFound = 0;
+ while (j<bucketNum && !isFound) {
+ if (j == 0) {
+ if ((num[i] >= bucketRange[j]) && (num[i] <= bucketRange[j+1])) {
+ buckets[j][bucketsSize[j]] = num[i];
+ bucketsSize[j]++;
+ isFound = 1;
+ } else {
+ j++;
+ }
+ } else {
+ if ((num[i] >= bucketRange[j]+1) && (num[i] <= bucketRange[j+1])) {
+ buckets[j][bucketsSize[j]] = num[i];
+ bucketsSize[j]++;
+ isFound = 1;
+ } else {
+ j++;
+ }
+ }
+ }
+ }
+
+ // Kirim
+ for (i=1; i<bucketNum; i++) {
+ rc = MPI_Send(&bucketsSize[i], 1, MPI_INT, i, 1, MPI_COMM_WORLD);
+ rc = MPI_Send(buckets[i], bucketsSize[i], MPI_INT, i, 2, MPI_COMM_WORLD);
+ }
+
+ //Sort diri sendiri
+ sort(buckets[0], bucketsSize[0]);
+ // for (i=0; i<bucketsSize[0]; i++) {
+ // printf("%d\n", buckets[0][i]);
+ // }
+
+ for (i=1; i<bucketNum; i++) {
+ int size = bucketsSize[i];
+ int temp[size];
+ rc = MPI_Recv(temp, bucketsSize[i], MPI_INT, i, 3, MPI_COMM_WORLD, &Stat);
+ // for (i=0; i<size; i++) {
+ // printf("%d\n", temp[i]);
+ // }
+ }
+ endTime = clock();
+ printf("Execution time: %f seconds\n", (double)(endTime-beginTime)/CLOCKS_PER_SEC);
+ } else {
+ int bucketSize;
+ source = 0;
+ rc = MPI_Recv(&bucketSize, 1, MPI_INT, source, 1, MPI_COMM_WORLD, &Stat);
+ int *numIn = (int *)malloc(sizeof(int) * (bucketSize));;
+ source = 0;
+ rc = MPI_Recv(numIn, bucketSize, MPI_INT, source, 2, MPI_COMM_WORLD, &Stat);
+
+ // Sorting
+ sort(numIn, bucketSize);
+ dest = 0;
+ rc = MPI_Send(numIn, bucketSize, MPI_INT, dest, 3, MPI_COMM_WORLD);
+ }
+
+ MPI_Barrier(MPI_COMM_WORLD);
+ MPI_Finalize();
+
}
+
diff --git a/laporan.txt b/laporan.txt
index 82839fa..53b45be 100644
--- a/laporan.txt
+++ b/laporan.txt
@@ -1 +1,24 @@
-- Test Case 1 (N = 50000) M = 1 -> M = 4 -> M = 8 -> M = 16 -> M = 32 -> - Test Case 2 (N = 100000) M = 1 -> M = 4 -> M = 8 -> M = 16 -> M = 32 -> - Test Case 3 (N = 200000) M = 1 -> M = 4 -> M = 8 -> M = 16 -> M = 32 -> - Test Case 4 (N = 400000) M = 1 -> M = 4 -> M = 8 -> M = 16 -> M = 32 ->
+- Test Case 1 (N = 50000)
+ M = 1 -> 3.38 s
+ M = 4 -> 0.27 s
+ M = 8 -> 0.22 s
+ M = 16 -> 0.13 s
+ M = 32 -> 0.1 s
+
+- Test Case 2 (N = 100000)
+ M = 1 -> 13.14 s
+ M = 4 -> 1.11 s
+ M = 8 -> 0.58 s
+ M = 16 -> 0.32 s
+ M = 20 -> 0.15 s
+
+- Test Case 3 (N = 200000)
+ M = 1 -> 52.52 s
+ M = 4 -> 3.62 s
+ M = 8 -> 2.22 s
+ M = 10 -> 1.47 s
+
+- Test Case 4 (N = 400000)
+ M = 1 -> 211.21 s
+ M = 4 -> 17.25 s
+ M = 5 -> 8.97 s
--
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