I am attempting to multithread some code with OMP. Currently my sequentially version using rand() to generate a set of random numbers with a consistent seed so that they return the same results when run each time. I want to parallelise my code but rand() is not thread safe. Can someone please show me how i would go about using a random number generator that works on threads so i can produce the same data set upon each test similar to that of using a seed with rand(). My code im parallelising is as follows:
long linkCnt;
long j;
long t;
srand(randInit);
linkCnt=0; //Keep track of # of outgoing edges
#pragma omp parallel for schedule(runtime) private(t)
for(j = 0; j < G->N; j++)
{
if(i == j){
t = NO_CONN;
} else {
t = (rand() % ((MAX_EDGE_WEIGTH-1) * 2)+1); //50% of having no connection
if(t > MAX_EDGE_WEIGTH){
//t = INF; //Like no connection
t = NO_CONN; //Like no connection
} else {
linkCnt++;
G->visited[j] = VISITED; //Do this to find isolated nods that have no incomming edge
}
}
G->node[i][j] = t;
}
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