[boubou]

Hi,

I use fortran routine in CFX but
Does a calculation using routines is longer than a calculation without routine (in terms of CPU-time) ?
If yes, which statements consume time ?

Thanks

[Opaque]

Not sure what your concern is. The software package is a collection of hundreds/thousands of routines/functions; therefore, it should be no different.

Now, if you add your own routine/function to customize something it should be nearly the same time unless your algorithm is either better (less time), or worse (a lot more time) than the internal algorithm.

Summary: if you use your own, you may be partially to blame for slow down, or congratulate if it speeds up. Otherwise, it is the provider to blame for lack of performance.

[boubou]

Thanks for your reply. But is it sure that the simple fact to add a Junction Box Routine slow down the calculation ?

[Opaque]

That depends on what you do in it.

If you do nothing, it means nothing compared to the calculation time.

If you create an infinite loop, you get the idea.