1.2 Compiling BigSimulator

To compile the simulator which is called BigSimulator (or BigNetSim), we need the regular Charm++ build (net-linux-x86_64 in our example). It needs to be complemented with a few more libaries from BigSim and with the Pose discrete-event simulator. These pieces can be built, respectively, with:

./build bgampi net-linux-x86_64 -O2
./build pose net-linux-x86_64 -O2

Access to the discrete-event simulation is realized via a Charm++ package originally named BigNetSim (now called BigSimulator). Assuming that the 'subversion' (svn) package is available, this package can be obtained from the Web with a subversion checkout such as:

   svn co https://charm.cs.uiuc.edu/svn/repos/BigNetSim/

In the subdir 'trunk/' created by the checkout, the file Makefile.common must be edited so that 'CHARMBASE' points to the regular Charm++ installation. Having that done, one chooses a topology in that subdir (e.g. BlueGene for a torus topology) by doing a "cd" into the corresponding directory (e.g. 'cd BlueGene'). Inside that directory, one should simply "make". This will produce the binary "../tmp/bigsimulator". That file, together with file "BlueGene/netconfig.vc", will be used during a simulation. It may be useful to set the variable SEQUENTIAL to 1 in Makefile.common to build a sequential (non-parallel) version of bigsimulator.