Two computers, same inputs, different results?

I have two computers on which I do programming on, my home computer and my university computer. Both computers run visual c++ 2008 on 64-bit windows 7 home premium.

Why is it that even after clean rebuilds, in both debugging and release modes, the two computers give different results despite the identical code and inputs? The only real diff开发者_如何学Goerence between the two computers is that one has better specs (core 2 quad vs core i7) but other than that there are no real differences.

Seems like you have problems with thread synchronization. It would be helpful if you provided more details. What does the code do? Maybe just show it.

If you repeat execution on Machine A, will it always yield the same output? And what happens if you spawn multiple processes on the same machine?