Why: The Same Matlab program run in the same version Matlab but in Different PC generates Different Results?

I have run a Matlab Program in the different PC, by the same version of Matlab software, but got different results, anyone tell me why this happens? any possible reasons?

The program just read some data from a .sur file, but data generated were totally different, confusing....

Answer 1

[Jan]

You are just reading a file, but do not perform any calculations? Then I guess, that the reading function calls a function, which is shadowed by a user-defined function on one computer. You can check this by removing all paths containing user-defined function temporarily from the path. DEPFUN can help also.

Answer 2

[Andreas Goser]

There can be a lot of reasons. I try collecting reasons in this Question. we should make sure it is captured there after you identified it.

The first thing to see here is whether machine has different processors and operating systems. Especially 32 Bit and 64 bit systems can be a part of the reason. This mostly is not a bug and can be explained or avoided. It is also important to learn whether the different results are small (and you just need an explanation) or if they are fundamentally different.

You may need to contact MathWorks Technical Support for a full explanation.