memtest_performance_experiment.cpp

#include <cstdio>
#include <cstdlib>
#include <iostream>

using namespace std;



int main(int argc, char* argv[]) {
    if (argc<3) {
        cout << "Usage:" << endl << "./memtest_performance_experiment MEMORY_IN_MEGABYTES NUMBER_OF_PASSES SEED(-1=linear access)";
        return -1;
    }
    int argPos=1;
    int memoryInMegabytes = atoi(argv[argPos++]);
    long long int size = memoryInMegabytes*1024l*1024l;
    int numberOfPasses = atoi(argv[argPos++]);
    int seed = atoi(argv[argPos++]);

    char *memory = new char[size];

    if (seed>=0) {
    } else {
        for (int passNo=0; passNo<numberOfPasses; passNo++) {
            for (long long int index=0; index<size; index++) {
                memory[index]=(char)(index%255);
            }
        }
        if (memory[rand()%size] > rand()%255) {
            cout << "" << endl;
        }
    }

    delete [] memory;

    return 0;
}