AIFM

• Builds on the Shenango runtime (user-level tasking and networking)
  • Hides remote object fetch latency using prefetching, concurrent fetch requests, caching, auto mem-evacuation
  • AIFM works with objects (contiguous chunks of remotable memory)
  • Scope object must be provided so AIFM doesn’t evacuate in-use local memory
  • Modifying large codebases to run on AIFM isn’t practical.

Example of for loop in AIFM:

int sum ( RemoteArray * array, int n) {
    int sum = 0;
    for (int i = 0; i < n; i++) {
        DerefScope scope;
        sum += array.at(scope, i);
    }
    return sum;
}

• Several programmer directed paramaters
  • Degree of concurrency, object size, prefetching strategy