Hi,
Is there any performance advantage to running either the 32-bit or 64-bit version? I'm going to be using a machine with 1 GB of RAM as a dedicated pianoteq host. All else being equal, 32-bit versions are usually faster (unless you need the extra memory), but there may be exceptions. What is the case for pianoteq?
Cheers
Neilen
The 64-bit version is 10-15% faster than the 32-bit version on windows, but as far as I recall, the difference is smaller on linux, maybe 5% only. But if you have the choice, pick up the 64-bit version, it won't hurt.
Julien,
Thanks for the info. Does the 64-bit version use extra CPU instructions that are not available in 32-bit mode? Otherwise one would have expected the 64-bit pointers to be a drag on performance.
Cheers
Neilen
Yes, on x86 CPUs, the number of available registers has been doubled in 64-bit mode (both standard integer registers and SSE floating point registers). In some situtations this allows the compiler to avoid unnecessary memory accesses and produce faster code.