lab 3 working

03-MatrixAddition (fork)/matAddSingle.c

@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <time.h>
+
+
+#define NS_PER_SEC 1000000000
+
+
+static inline uint64_t gettime_ns() {
+    struct timespec ts;
+    clock_gettime(CLOCK_REALTIME, &ts);
+    return ts.tv_sec * NS_PER_SEC + ts.tv_nsec;
+}
+
+int main(int argc, char* argv[])
+{
+    uint64_t start, end;
+    int rows, cols;
+
+    // Matrix 1
+    FILE* input1 = fopen(argv[1], "r");
+    fscanf(input1, "%d", &rows);
+    fscanf(input1, "%d", &cols);
+    int * matrix1 = (int *)malloc(rows*cols*sizeof(int));
+    for(int i = 0; i < rows*cols; i++) {
+        int value;
+        fscanf(input1, "%d", &value);
+        matrix1[i] = value;
+    }
+    fclose(input1);
+
+    // Matrix 2
+    FILE* input2 = fopen(argv[2], "r");
+    fscanf(input2, "%d", &rows);
+    fscanf(input2, "%d", &cols);
+
+    int * matrix2 = (int *)malloc(rows*cols*sizeof(int));
+    for(int i = 0; i < rows*cols; i++) {
+        int value;
+        fscanf(input2, "%d", &value);
+        matrix2[i] = value;
+    }
+    fclose(input2);
+
+
+    start = gettime_ns();
+    int * result = (int *)malloc(rows*cols*sizeof(int));
+
+    // Perform Single Process Matrix Addition
+    for(int i= 0; i < rows*cols; i++){
+        result[i] = matrix1[i] + matrix2[i];
+    }
+
+    end = gettime_ns();
+
+    // Print result to console
+    for (int i = 0; i < rows * cols; i++) {
+        printf("%2d ", result[i]);
+        if ((i + 1) % cols == 0) {
+            printf("\n");
+        }
+    }
+
+
+    printf("Addition took %" PRIu64 " nanoseconds\n", end - start);
+
+    free(matrix1);
+    free(matrix2);
+    free(result);
+}
+
+