First (real) MPI run on EC2
After a few days of tinkering with EC2MPI, I spent some time polishing up a stat mech MPI simulation. The code in question is a 2d Ising model simulation using Replica Exchange. Right now it stands at around 400 lines of C++ using STL vectors (which I love). Once I know it works (or at least works well enough) I might post it up here, but for now I’m just trying to generate pretty hysteresis plots and observe the critical behavior of a 2d Ising model system. Here’s a picture with points on it.
Energy per spin plotted against magnetization
I leave the interpretation to you. The best part of this is that I can do these MPI runs without burning a hole in my lap (the MacBook gets rather warm). -David