What are the impacts of running a 32-bit Simulink (R2010a) autogenerated code on a 64-bit Windows 7 platform?

32-bit on 64-bit

[Walter Roberson]

Is this code being compiled as 64 bit, or was it compiled as 32 bit and so is 32 bit code executing on a 64 bit operating system?

Answer 1

[Walter Roberson]

It appears that there should not be much performance difference for running 32 bit binaries on 64 bit windows using current architectures. However if I read between the lines correctly, performance would go down if there are a lot of operating system calls.

https://msdn.microsoft.com/en-us/library/windows/desktop/aa384219%28v=vs.85%29.aspx

http://stackoverflow.com/questions/12224809/do-32bit-apps-run-faster-or-slower-on-a-64bit-os

https://en.wikipedia.org/wiki/X86-64

Answer 2

[Wibisono]

Thank you for your time answering the question. The code was compiled as 32-bit (on a 32-bit Windows 7 pc) and is used in a real-time simulation (on a Windows 7 + RTX). The plan is to port the code over to a 64-bit Windows 7 pc.