On 7 May 2016, at 3:28am, Keith Medcalf <kmedcalf at dessus.com> wrote:
> I presume you mean that running 32-bit application on a 64-bit OS is slower > than the same application run on a 32-bit OS. Hold on. The original poster was talking about using a 32-bit DLL, not a 32-bit application. I don't know what Windows' limitations are. n 64-bit windows can you run a 64-bit application which uses a 32-bit DLL ? Or does the fact that the application uses a 32-bit DLL mean that it must be 32-bit itself ? Either way, what I found is that 32-bit apps run at expected speed if they're just doing stuff internally. The delays come when you meet a 32/64 interface, for example if a 32-bit application is constantly fetching data from a 64-bit source supplied by the 64-bit OS. Simon.
