It only simulates Pluto, but that may change in the future.

First build and install OpenMPI. We're using version 1.4. You might be able to ge more recent versions to work, but I've had problems with 1.8.

To build the hybrid code just run make This will produce a binary called hybrid that can be executed using mpirun -n 24 Right now it works well with the Intel compiler, but we're working on improving portability.

The most commonly used settings are in inputs.dat, and dimensions.f. Yes you will have to recompile if you change the dimensions of the simulation.

Right now that's about all there is to it. It simulates Pluto, if you want something else you have to dig into the codebase and edit it. There's currently no convenient way to change most simulation parameters.

In fact it probably won't work at all unless you use 24 processes. (i.e. mpirun -n 24 hybrid)

If you get a segmentation fault shortly after startup try increasing the shell stack size. In bash or zsh try ulimit -s unlimited some systems have a hard limit on stack size. In that case try ulimit -s 65532

Program starts in maind.f, but the bulk of the code is in gutsp.f. Gutsp.f is the guts of the program for the kinetic simulation. Gutsf.f is the guts of the program for the fluid simulation. Comments in maind.f explain many of the variable names.

Project lead: [email protected]