Here are some approximate speedup measurements (on master/slaves
simulations lasting between 10s and 20s each):
- 3.3.1 -> 3.3.2: -15%
- 3.3.2 -> 3.3.3: +40%
- 3.3.1 -> 3.3.3: +40%
- 3.3.1 with inline patch -> 3.3.3: +30%
+ 3.3.1 -> 3.3.2: about same performance
+ 3.3.2 -> 3.3.3: 40% speedup
+ 3.3.1 -> 3.3.3: 40% speedup
+ 3.3.1 with inline patch -> 3.3.3: 30% speedup
Our reading is that the refactoring which occurred in 3.3.2 made us
suffer much more from the xbt_dynar_foreach low performance, but
once we solved this, this refactoring proved to be very performance
- effective.
+ effective. From the 40% speedup, somehow, 10% are due to the
+ inlining and 30% to the refactoring.
That's a pitty that gcc cannot inline functions placed in other files
alone. We have to choose between:
- live with low performance
- switch to a decent compiler such as icc (not quite possible).
- -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>
+ -- Da SimGrid team <simgrid-devel@lists.gforge.inria.fr> Thu, 20 Aug 2009 21:21:33 +0200
SimGrid (3.3.2) stable; urgency=low