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authorAkshay <[email protected]>2021-10-13 11:28:07 +0100
committerAkshay <[email protected]>2021-10-13 11:28:07 +0100
commitaa13912e3ec97705d47207003afb6845c6859bc8 (patch)
treea3116f9dfef701b6904f457be539dd03a3f74cf3 /src/2
init
Diffstat (limited to 'src/2')
-rwxr-xr-xsrc/2/mainbin0 -> 34312 bytes
-rw-r--r--src/2/main.c82
-rw-r--r--src/2/table7
3 files changed, 89 insertions, 0 deletions
diff --git a/src/2/main b/src/2/main
new file mode 100755
index 0000000..b999f77
--- /dev/null
+++ b/src/2/main
Binary files differ
diff --git a/src/2/main.c b/src/2/main.c
new file mode 100644
index 0000000..ee7f2c8
--- /dev/null
+++ b/src/2/main.c
@@ -0,0 +1,82 @@
1#include <stdio.h>
2#include <stdlib.h>
3
4#include <omp.h>
5
6int main() {
7 int **a, **b, **c, l, m1, m2, n;
8
9 printf("Order of matrix A: ");
10 int _ = scanf("%d %d", &l, &m1);
11
12 printf("Order of matrix B: ");
13 _ = scanf("%d %d", &m2, &n);
14
15 if (m1 != m2) {
16 printf("Invalid order\n");
17 exit(1);
18 }
19
20 int m = m1;
21
22 a = (int **) calloc(l, sizeof(int *));
23 for(int i = 0; i < m; i++) a[i] = (int *) calloc(m, sizeof(int));
24
25 b = (int **) calloc(m, sizeof(int *));
26 for(int i = 0; i < n; i++) b[i] = (int *) calloc(n, sizeof(int));
27
28 c = (int **) calloc(l, sizeof(int *));
29 for(int i = 0; i < n; i++) c[i] = (int *) calloc(n, sizeof(int));
30
31
32 printf("L: %d, M: %d, N: %d\n", l, m, n);
33
34 // input for A
35 // printf("Enter A:\n");
36 for(int i = 0; i < l; i++) {
37 for(int j = 0; j < m; j++) {
38 // _ = scanf("%d", &a[i][j]);
39 a[i][j] = rand() % 500;
40 }
41 }
42
43 // input for B
44 // printf("Enter B:\n");
45 for(int i = 0; i < m; i++) {
46 for(int j = 0; j < n; j++) {
47 // _ = scanf("%d", &b[i][j]);
48 b[i][j] = rand() % 1000;
49 }
50 }
51
52 // printf("\nA: \n");
53 for(int i = 0; i < l; i++) {
54 for(int j = 0; j < m; j++) {
55 // printf("%d\t", a[i][j]);
56 }
57 // printf("\n");
58 }
59
60 // printf("\nB: \n");
61 for(int i = 0; i < m; i++) {
62 for(int j = 0; j < n; j++) {
63 // printf("%d\t", b[i][j]);
64 }
65 // printf("\n");
66 }
67
68 double start_time = omp_get_wtime();
69 int i, j, k;
70#pragma omp parallel for private(j, k) num_threads(1)
71 for(i = 0; i < l; i++) {
72 for(j = 0; j < m; j++) {
73 c[i][j] = 0;
74 for(k = 0; k < n; k++) {
75 c[i][j] += a[i][k] * b[k][j];
76 }
77 }
78 }
79 double end_time = omp_get_wtime();
80
81 printf(">>= Done in %f secs", end_time - start_time);
82}
diff --git a/src/2/table b/src/2/table
new file mode 100644
index 0000000..8e89bcc
--- /dev/null
+++ b/src/2/table
@@ -0,0 +1,7 @@
1 | 1 | 2 | 4 | 8
2-----|-----------|-----------|-----------|----------
3 100 | 0.000862 | 0.000813 | 0.000492 | 0.018057
4 250 | 0.016979 | 0.007088 | 0.008280 | 0.023153
5 500 | 0.187274 | 0.095052 | 0.083152 | 0.081629
61000 | 2.522172 | 1.221258 | 1.139272 | 1.361240
72000 | 47.200504 | 26.900284 | 19.395751 | 15.864646