Heap memory for matrix and elapsed time

sequential/Makefile

@@ -1,12 +1,15 @@
-CC=gcc
+CC=mpicc
 CFLAGS=-Wall -lm -std=c99
 
-all: config jacobi_sequential.c
-	${CC} ${CFLAGS} config.o jacobi_sequential.c -o jacobi.out
+all: config utils jacobi_sequential.c
+	${CC} ${CFLAGS} config.o utils.o jacobi_sequential.c -o jacobi.out
 
 config: ../config/config.c
 	${CC} -c ${CFLAGS} ../config/config.c
 
+utils: ../utils/utils.c
+	${CC} -c ${CFLAGS} ../utils/utils.c
+
 .PHONY: clean
 clean:
 	rm -f *.out *.o

sequential/jacobi.conf

@@ -1,7 +1,7 @@
 # Configuration file for the Jacobi project.
 
 # The size of the matrix (borders excluded).
-N 10
+N 5000
 
 # The value at each border.
 NORTH 0.0

sequential/jacobi_sequential.c

@@ -5,21 +5,25 @@
 
 #include <stdio.h>
 #include <math.h>
+#include <mpi.h>
 #include "../config/config.h"
-
-typedef struct borders {
-  double north;
-  double east;
-  double south;
-  double west;
-} borders;
+#include "../utils/utils.h"
 
 void compute_jacobi(int n, double init_value, double threshold, borders b);
 
 int main(int argc, char* argv[]) {
+  int numprocs;
   int config_loaded;
   configuration config;
   borders b;
+  double startwtime = 0.0, endwtime;
+
+  MPI_Init(&argc, &argv);
+  MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
+
+  if (numprocs != 1) {
+    MPI_Abort(MPI_COMM_WORLD, 1);
+  }
 
   config_loaded = load_config(&config);
   if (config_loaded != 0) {
@@ -31,17 +35,24 @@ int main(int argc, char* argv[]) {
   b.south = config.south;
   b.west = config.west;
 
+  startwtime = MPI_Wtime();
   compute_jacobi(config.n, config.init_value, config.threshold, b);
 
+  endwtime = MPI_Wtime();
+  printf("Wall clock time: %fs\n", endwtime - startwtime);
+
+  MPI_Finalize();
+
   return 0;
 }
 
 void compute_jacobi(int n, double init_value, double threshold, borders b) {
-  double x[n + 2][n + 2];
+  double **x;
   double max_diff, new_x;
   int i, j;
 
   /* Initialize boundary regions */
+  x = create_matrix(n + 2, n + 2);
   for (i = 1; i <= n; i++) {
     x[0][i] = b.north;
     x[n + 1][i] = b.south;
@@ -65,4 +76,6 @@ void compute_jacobi(int n, double init_value, double threshold, borders b) {
       }
     }
   } while (max_diff > threshold);
+
+  destroy_matrix(x, n + 2);
 }