From 2ac775650dfb606ea4896c311584ee64b6206cd0 Mon Sep 17 00:00:00 2001
From: Seldkt <xeldkt@gmail.com>
Date: Thu, 11 Apr 2019 22:38:26 +0700
Subject: [PATCH] serial radix
---
src/SerialRadixSortCUDA.cu | 105 +++++++++++++++++++++++++++++++++++++
1 file changed, 105 insertions(+)
create mode 100644 src/SerialRadixSortCUDA.cu
diff --git a/src/SerialRadixSortCUDA.cu b/src/SerialRadixSortCUDA.cu
new file mode 100644
index 0000000..e4ec5d1
--- /dev/null
+++ b/src/SerialRadixSortCUDA.cu
@@ -0,0 +1,105 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <omp.h>
+#include <sys/time.h>
+
+void rng(int* arr, int n);
+
+int getMax(int arr[], int n);
+
+void countingSort(int arr[], int n, int exp);
+
+void radixSort(int arr[], int n);
+
+void print(int arr[], int n);
+
+
+void rng(int* arr, int arrSize) {
+ int seed = 13516042; // Ganti dengan NIM anda sebagai seed.
+ srand(seed);
+ for(int i = 0; i < arrSize; i++) {
+ arr[i] = (int)rand();
+ }
+}
+
+//fungsi cari isi array yg terbesar
+int getMax(int* arr, int arrSize)
+{
+ int max = arr[0];
+ for (int i = 1; i < arrSize; i++){
+ if (arr[i] > max){
+ max = arr[i];
+ }
+ }
+ return max;
+}
+
+void countingSort(int* arr, int arrSize, int exp)
+{
+ int sorted[arrSize];
+ int i, bucket[10] = {0};
+
+ {
+ int local_bucket[10]={0};
+
+ //exp untuk hilangin digit di belakang digit, % 10 hilangin digit didepan digit
+ for (i = 0; i < arrSize; i++)
+ {
+ local_bucket[ (arr[i]/exp)%10 ]++;
+ }
+ for(i=0;i<10;i++){
+ bucket[i] += local_bucket[i];
+ }
+ }
+
+ for (i = 1; i < 10; i++)
+ bucket[i] += bucket[i - 1];
+
+
+ for (i = arrSize - 1; i >= 0; i--)
+ {
+ sorted[bucket[ (arr[i]/exp)%10 ] - 1] = arr[i];
+ bucket[ (arr[i]/exp)%10 ]--;
+ }
+
+ for (i = 0; i < arrSize; i++)
+ arr[i] = sorted[i];
+}
+
+void radixSort(int* arr, int arrSize)
+{
+ int maks = getMax(arr, arrSize);
+ for (int exp = 1; maks/exp > 0; exp *= 10)
+ countingSort(arr, arrSize, exp);
+}
+
+void print(int* arr, int size )
+{
+ for (int i = 0; i < size; i++)
+ printf("%d \n", arr[i]);
+}
+
+int main(int argc, char *argv[]) {
+ float time;
+ cudaEvent_t start, stop;
+
+ long arrSize = strtol(argv[1], NULL, 10);//input array size
+
+ int arr[arrSize];
+ rng(arr, arrSize);
+
+ cudaEventCreate(&start);
+ cudaEventCreate(&stop);
+ cudaEventRecord(start, 0);
+
+ radixSort(arr, arrSize);
+
+ cudaEventRecord(stop, 0);
+ cudaEventSynchronize(stop);
+ cudaEventElapsedTime(&time, start, stop);
+
+ printf("Time to generate: %3.4f ms \n", time);
+
+ return 0;
+
+}
\ No newline at end of file
--
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