I regularly work with Microsoft Visual Studio 2005 with SP1 on my Pentium 4 single-core non-hyperthreading based PC and occasionally run some builds on an Athlon 64 X2 dual core based PC. I noticed the compiler (cl.exe) is a single process with a single thread running, even on the dual core. I did some digging around to see if I could enable parallel (multi processor) builds to take advantage of t
