From afde91bb525fb5aa23f2c28399d59364a64dd648 Mon Sep 17 00:00:00 2001
From: 13513073 <13513073@hpc.if.itb.ac.id>
Date: Fri, 19 Feb 2016 11:36:33 +0700
Subject: [PATCH] add bucket_sort OpenMP and laporan
---
LaporanOpenMP.txt | 39 +++++++++++++++++++
bucket | Bin 0 -> 16971 bytes
bucket_sort.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 132 insertions(+)
create mode 100644 LaporanOpenMP.txt
create mode 100755 bucket
create mode 100644 bucket_sort.c
diff --git a/LaporanOpenMP.txt b/LaporanOpenMP.txt
new file mode 100644
index 0000000..e522c0f
--- /dev/null
+++ b/LaporanOpenMP.txt
@@ -0,0 +1,39 @@
+Moch Ginanjar Busiri 13513041
+Wiwit Rifa'i 13513073
+
+
+Laporan Perbandingan Waktu Bucket Sort OpenMP :
+Thread : 1
+ Data 50000 : 3690 ms
+ Data 100000 : 14260 ms
+ Data 200000 : 61810 ms
+ Data 400000 : 222600 ms
+Thread : 8
+ Data 50000 : 590 ms
+ Data 100000 : 2170
+ Data 200000 : 8140 ms
+ Data 400000 : 30600 ms
+Thread : 16
+ Data 50000 : 390 ms
+ Data 100000 : 1020 ms
+ Data 200000 : 4190 ms
+ Data 400000 : 15900 ms
+Thread : 32
+ Data 50000 : 360 ms
+ Data 100000 : 1020 ms
+ Data 200000 : 2540 ms
+ Data 400000 : 11810 ms
+Thread : 64
+ Data 50000 : 500 ms
+ Data 100000 : 1020 ms
+ Data 200000 : 2690 ms
+ Data 400000 : 8560 ms
+Thread : 128
+ Data 50000 : 60 ms
+ Data 100000 : 290 ms
+ Data 200000 : 1260 ms
+ Data 400000 : 3360 ms
+
+
+
+
diff --git a/bucket b/bucket
new file mode 100755
index 0000000000000000000000000000000000000000..d646e97d713a3f6e3f7b59b2537067334fc95317
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diff --git a/bucket_sort.c b/bucket_sort.c
new file mode 100644
index 0000000..f384700
--- /dev/null
+++ b/bucket_sort.c
@@ -0,0 +1,93 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <omp.h>
+#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] = (abs((int)rand()) % num_elements);
+ }
+ return rand_nums;
+}
+
+void insertion_sort(int *array, int a, int b)
+{
+ int c, d, t;
+ for (c = a ; c < b; c++) {
+ d = c;
+
+ while ( d > a && array[d] < array[d-1]) {
+ t = array[d];
+ array[d] = array[d-1];
+ array[d-1] = t;
+
+ d--;
+ }
+ }
+}
+
+
+int main(int argc, char** argv) {
+ if (argc != 3) {
+ fprintf(stderr, "Usage: bucket num_threads num_elements\n");
+ exit(1);
+ }
+
+ int num_elements = atoi(argv[2]);
+ int num_threads = atoi(argv[1]);
+ int range_size = (num_elements + num_threads - 1) / num_threads;
+ srand(time(NULL));
+
+ int *rand_nums = NULL;
+ rand_nums = create_rand_nums(num_elements);
+ int * bucket_nums;
+ bucket_nums = (int *) malloc(sizeof(int) * num_elements);
+
+ int *str, *fsh;
+ str = (int *)malloc(sizeof(int) * num_threads);
+ fsh = (int *)malloc(sizeof(int) * num_threads);
+
+ memset(fsh, 0, sizeof(int) * num_threads);
+
+ time_t start_time = clock();
+
+ int i;
+ for(i = 0; i<num_elements; i++) {
+ fsh[rand_nums[i]/range_size]++;
+ }
+ int now = 0;
+ for(i = 0; i<num_threads; i++) {
+ str[i] = now;
+ now += fsh[i];
+ fsh[i] = str[i];
+ }
+ for(i = 0; i<num_elements; i++) {
+ int no_bucket = rand_nums[i]/range_size;
+ bucket_nums[fsh[no_bucket]++] = rand_nums[i];
+ }
+
+ // Implementasi bucket sort dengan OMP
+ #pragma omp parallel for num_threads(num_threads) private(i) shared(bucket_nums,str, fsh)
+ for (i = 0; i < num_threads; i++)
+ {
+ insertion_sort(bucket_nums, str[i], fsh[i]);
+ }
+
+
+ time_t finish_time = clock();
+
+ for(i = 0; i<num_elements; i++)
+ printf("%d\n", bucket_nums[i]);
+
+ printf("Bucket sort of %d with %d thread need time : %.5lf ms\n", num_elements, num_threads, (double)(finish_time-start_time)*1000/CLOCKS_PER_SEC);
+ free(str);
+ free(fsh);
+ free(rand_nums);
+ free(bucket_nums);
+ return 0;
+}
--
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