From eb93ff67601b84e6d43d5406a789c6bf2766f993 Mon Sep 17 00:00:00 2001
From: 13513066 <13513066@ld5-01.if.itb.ac.id>
Date: Fri, 12 Feb 2016 19:14:12 +0700
Subject: [PATCH] Bucket Sort Done
---
bucketsort | Bin 0 -> 13485 bytes
bucketsort.c | 117 ++++++++++++++++++++++++++++++++++++++++++---------
mpi_hostfile | 7 +++
3 files changed, 105 insertions(+), 19 deletions(-)
create mode 100755 bucketsort
create mode 100644 mpi_hostfile
diff --git a/bucketsort b/bucketsort
new file mode 100755
index 0000000000000000000000000000000000000000..ee64757457fee41b229fb2cd763c25f103ed3b3c
GIT binary patch
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diff --git a/bucketsort.c b/bucketsort.c
index abf4d3c..8d835c7 100644
--- a/bucketsort.c
+++ b/bucketsort.c
@@ -1,5 +1,7 @@
-include "mpi.h"
+#include "mpi.h"
#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
void insertionSort(int n, int* array)
{
@@ -49,30 +51,107 @@ int main() {
double time_bucket= 0.0;
double time_insert= 0.0;
+ int* bucket;
+ int* array;
+ float div;
+ float upperbound;
+
int n, c, d, t;
if(rank==0) {
- printf("Enter number of elements\n");
- scanf("%d", &n);
-
- printf("Enter %d integers\n", n);
- int *array = (int*)malloc(sizeof(int)*n);
-
- for (c = 0; c < n; c++) {
- scanf("%d", &array[c]);
+ printf("Enter number of elements\n");
+ scanf("%d", &n);
+
+ printf("Enter %d integers\n", n);
+ array =(int*)malloc(sizeof(int)*n);
+ srand(time(NULL));
+ for (c = 0; c < n; c++) {
+ array[c] = rand()%100;
+ }
}
- float div = (float)(max(array, n) - min(array, n)/(float)size);
- printf("%f", div);
-
-
- insertionSort(n, array);
- printf("Sorted list in ascending order:\n");
-
- for (c = 0; c <= n - 1; c++) {
- printf("%d\n", array[c]);
+ MPI_Barrier(MPI_COMM_WORLD);
+ time_bucket -= MPI_Wtime();
+ MPI_Bcast(&n, 1, MPI_INT, 0 , MPI_COMM_WORLD);
+
+
+ if(rank!=0) {
+ array=(int*)malloc(sizeof(int)*n);
}
+
+
+ MPI_Bcast(array, n, MPI_INT, 0 , MPI_COMM_WORLD);
+
+
+
+ bucket = (int*)malloc(sizeof(int)*n);
+
+ int i;
+
+ div = (float)(max(array, n) - min(array, n))/(float)size;
+ if(div==0) div=1;
+ int j=0;
+ for(i=0; i<n; i++) {
+ int bucket_no = (int)((array[i]-min(array,n))/div);
+ if(rank==bucket_no) {
+ bucket[j]=array[i];
+ j++;
+ }
+ else if (bucket_no>=size) {
+ if (rank==size-1){
+ bucket[j]=array[i];
+ j++;
+ }
+ }
+ }
+
+ insertionSort(j,bucket);
+
+ int *result;
+ if(rank==0) {
+ result = (int*)malloc(sizeof(int) * n);
+ }
+
+ int *counts = (int*) malloc (sizeof(int) * size);
+
+ // Each process tells the root how many elements it holds
+ MPI_Gather(&j, 1, MPI_INT, counts, 1, MPI_INT, 0, MPI_COMM_WORLD);
+
+ // Displacements in the receive buffer for MPI_GATHERV
+ int *disps = (int*) malloc (sizeof(int) * size);
+ // Displacement for the first chunk of data - 0
+ for (i = 0; i < size; i++)
+ disps[i] = (i > 0) ? (disps[i-1] + counts[i-1]) : 0;
+
+ // Collect everything into the root
+ MPI_Gatherv(bucket, j, MPI_INT,
+ result, counts, disps, MPI_INT, 0, MPI_COMM_WORLD);
+
+ MPI_Barrier(MPI_COMM_WORLD);
+ time_bucket += MPI_Wtime();
+
+ if (rank==0) {
+
+ printf("Sorted list in ascending order with BucketSort:\n");
+
+ for (c = 0; c <= n - 1; c++) {
+ printf("%d ", result[c]);
+ }
+ printf("\nTime : %lf\n", time_bucket);
}
+
+ if(rank==0) {
+ time_insert -= MPI_Wtime();
+ insertionSort(n, array);
+ time_insert+= MPI_Wtime();
+ printf("Sorted list in ascending order with Insertion Sort:\n");
+
+ for (c = 0; c <= n - 1; c++) {
+ printf("%d ", result[c]);
+ }
+ printf("\nTime : %lf\n", time_insert);
+ }
+
MPI_Finalize();
-return 0;
+ return 0;
}
diff --git a/mpi_hostfile b/mpi_hostfile
new file mode 100644
index 0000000..1aab781
--- /dev/null
+++ b/mpi_hostfile
@@ -0,0 +1,7 @@
+#daftar host
+localhost
+167.205.35.26
+167.205.35.28
+167.205.35.29
+167.205.35.30
+167.205.35.31
--
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