I've been developing some code on a 2011 macbook air that uses the GSL ODE integrators. I'm using GSL 1.16 and GCC 4.7. I then push that code to a server, where a script runs the code repeatedly. I'm finding that the server is 10 times slower, despite it having a faster processor. One major difference is that the server only has GCC 4.4. Is anyone aware of a substantial performance difference in GSL when it's compiled with different GCC's?
-gideon
