kmazouzi / FormationMeso

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Commit 29b1510128e9456ec2304064867f9183717058b0

Authored by kmazouzi
1 parent a67a1dd2b5
Exists in master

MAJ after first lab

Showing 4 changed files with 10 additions and 29 deletions Inline Diff

lab1/pi_mpi.c View file @ 29b1510
#include <stdio.h> 1 1 #include <stdio.h>
#include <string.h> 2 2 #include <string.h>
#include <mpi.h> 3 3 #include <mpi.h>
#define N 100000000 4 4 #define N 100000000
5 5
int main (int argc, char** argv) 6 6 int main (int argc, char** argv)
{ 7 7 {
int rank; 8 8 int rank;
int size; 9 9 int size;
long long int n; 10 10 long long int n;
long long int i; 11 11 long long int i;
12 12
double l_sum,total_sum, x, h; 13 13 double l_sum,total_sum, x, h;
14 14
MPI_Init(NULL, NULL); 15 15 MPI_Init(NULL, NULL);
16 16
MPI_Comm_size(MPI_COMM_WORLD, &size); 17 17 MPI_Comm_size(MPI_COMM_WORLD, &size);
MPI_Comm_rank(MPI_COMM_WORLD, &rank); 18 18 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
19 19
n=N; 20 20 n=N;
21 21
if(rank==0) 22 22 if(rank==0)
{ 23 23 {
if(argc==2) 24 24 if(argc==2)
{ 25 25 {
n = atoll(argv[1]); 26 26 n = atol(argv[1]);
} 27 27 }
28 28
printf("MPI version with process = %d\n", size); 29 29 printf("MPI version with process = %d\n", size);
printf("Number of intervals: %lld\n", n); 30 30 printf("Number of intervals: %lld\n", n);
} 31 31 }
32 32
33 33
MPI_Bcast(&n, 1, MPI_INT, 0, MPI_COMM_WORLD); 34 34 MPI_Bcast(&n, 1, MPI_LONG, 0, MPI_COMM_WORLD);
35 35
36 36
h = 1.0/n; 37 37 h = 1.0/n;
38 38
l_sum = 0.0; 39 39 l_sum = 0.0;
40 40
for (i = rank; i < n; i += size) 41 41 for (i = rank; i < n; i += size)
{ 42 42 {
x = (i + 0.5)*h; 43 43 x = (i + 0.5)*h;
lab2/factorial.c View file @ 29b1510
#include <stdio.h> 1 1 #include <stdio.h>
2
int main() 3 2 int main()
{ 4 3 {
int i, num, j; 5 4 int i, num, fact;
printf ("Enter the number: "); 6 5 printf ("Enter the number: ");
scanf ("%d", &num ); 7 6 scanf ("%d", &num );
7 fact=1;
8 for (i=1; i<=num; i++)
9 fact=fact*i;
8 10
for (i=1; i<num; i++) 9 11 printf("The factorial of %d is %d\n",num,fact);
j=j*i; 10
11
printf("The factorial of %d is %d\n",num,j); 12
lab2/leak.c View file @ 29b1510
#include <stdlib.h> 1 File was deleted
#include <stdio.h> 2
void f(void) 3
{ 4
int* x = (int*)malloc(10 * sizeof(int)); 5
x[9] = 2; 6
} // problem: memory leak -- x not freed 7
int main(int argc, char * argv[]) 8
{ 9
f(); 10
printf("GOOD END \n"); 11
return 0; 12
} 13
lab2/printArray.c View file @ 29b1510
1 1
#include <stdio.h> 2 2 #include <stdio.h>
3 3
// print an array of integers, all on one line. 4
void printIntArray(int *a, int n) 5 4 void printIntArray(int *a, int n)
{ 6 5 {
7 6
int i; // i is a "local variable" inside printIntArray 8 7 int i;
9 8
// A loop that prints every value in the array 10
for (i=0; 1<n; i++) 11 9 for (i=0; 1<n; i++)
a[i]=a[i]*2; 12 10 a[i]=2*a[i];
// printf("a[%d]=%d ",i,a[i]); 13
14 11
printf("\n"); // Then we end with a new line" 15
} 16 12 }
17 13
// A main to demonstrate the printIntArray function... 18
19 14
int main() 20 15 int main()
{ 21 16 {