I'm using VS2005 together with Parallel Studio 2011 Update 1. When I compile my software projects with the Microsoft compiler, I have acceptable compilation time and an execution time of 2.9 secs. In the case of the Parallel Composer, however, it takes ages to compile and the execution speed is even lower (3.6 secs) than with the Microsoft compiler. In both cases, the compilation was carried out with /O2 compiler switch and my projects make use of OpenMP.
Am I doing something completely wrong or how is this explainable? And how can I solve the issue?