possible integration problem with v5.1 and v5.2

[Frederic Y . Bois]

You may encounter problems when integrating a set of differential equations: 
with a very dense scheduling of output or input function discontinuities, 
the integrator may get stuck at a stopping point and does not advance past it. 
This seems to happen only when the code is compiled with the optimization option
on (at least with gcc), which is by default when you use the Makefiles 
provided. 
You can try running an non-optimized executable.
The simplest way to get at that is, for example:
cd ~/mcsim/sim
mod mymodel.model
gcc -o mymodel.exe *.c -lgsl -lgslcblas -lm

for optimized code you would do 
gcc -O -o mymodel.exe *.c -lgsl -lgslcblas -lm

This assumes that "mod", the model translation software is on you command path.

In any case, I am trying to understand and fix the problem. It is not a sneaky 
bug that would produce wrong results silently. The failure is reported and the 
program aborts immediately, the problem does not go unnoticed.

F. Bois