Some of the software I develop deals with different types of analysis (such as scientific and financial). The runs can take as much as 20 hours to complete. If I do nothing but change to link with dynamic RTL, the run time is increased on average of 35%. This means and additional 7 hours of run time! So dynamic RTL is really undesirable.
You didn't mention what OS/compiler you are using. We've found that (on Linux with gcc) there is a difference in run-time between shared library with -fpic turned on, and static libraries. However, when we do not compile with -fpic, the difference goes away. According to some posts on gcc, -fpic is not needed on Linux, as the loader takes care of the translation. It can increase memory usage, and will increase application load time, but it will work: http://gcc.gnu.org/ml/gcc/2000-06/msg00814.html Our speed ups are not always on the order of 35%, but we have reached that at times. Perhaps trying a build without -fpic, but still shared will show you the same benefit. If that's the case, then we might not need a different release of the Threads library. TJ -- Trey Jackson tjackson@ichips.intel.com "Ripley, she doesn't have bad dreams because she's just a piece of plastic." -- Newt