On 31 Dec 2012, at 08:26, sampsa at mac.com wrote: I noticed that Linux SIMH is about twice as fast on OS X. KUHAVX got about 12 VUPS when running natively on a Core i5 iMac, 24 when in a Linux VM on the same hardware. Pretty weird. Really? I've gotten 20 VUPS on both. Which version of OS X? sampsa -- Cory Smelosky http://gewt.net/ Personal stuff! http://gimme-sympathy.org/ My permanently-a-work-in-progress pet project.