static1.c

#include <stdio.h>
#include <omp.h>
#define N 2000
float A[N][N],B[N][N];
float C[N][N];
int main()
{
int i,j,k;
double start_time,end_time,used_time;
float sum=0.0;
for(i=0;i<N;i++)
	for(int j=0;j<N;j++)
	{
		A[i][j]=i+1.0;
		B[i][j]=1.0;
                C[i][j]=0.0;
	}
start_time=omp_get_wtime();
#pragma omp parallel for schedule(static,1) private(i,j,k) shared(A,B,C) num_threads(4)    	
for(i=0;i<N;i++)
	for(j=0;j<N;j++)
		for(k=0;k<N;k++)
			C[i][j]+=A[i][k]*B[k][j];
end_time=omp_get_wtime();
used_time=end_time-start_time;
for(int i=0;i<N;i++)
	for(int j=0;j<N;j++)
		sum+=C[i][j];
printf("sum=%lf,used_time=%lf seconds\n",sum,used_time);
}