How to make a C program load store intensive?

Question

How can the program be made intensively load-store so that there is maximum memory references and negligible computation(not even looping overheads!)

Answer 1

Use a lot of volatile variables, which are stored in-memory but I'm not sure if that answers your question.

Answer 2

Use huge arrays with a lot of scattered reads/writes to maximize cache misses. If your goal is to write a program that just exercises memory - write random values into an array at indices chosen randomly.

Answer 3

With gcc use -funroll-loops on this code:

int main (int argc, char** argv) {
    int a = 5;
    int b = 10;
    int c;
    int i;

    while (1) {
        for (i = 0; i <= 2147483647; i++) {
            c = b;
            b = a;
            a = c;
        }
    }

    return 0;
}

Answer 4

Make a map between possible inputs to your program and possible outputs.

Calculations on the inputs to make the outputs need to be done by another program or by hand, though.