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Fortran code execution speed

Fortran code execution speed

Fortran code execution speed

I have a lake water quality model coded in Fortran (Lahey f95, 5.65). When running on my laptop at home with only the laptop screen and my (slow!) home wireless network, execution time is 12 seconds. At my office with two external monitors and a wired network, execution time slows to 39 seconds. What gives? I run the code at home, hibernate, run it again at work. 3x slower!

RE: Fortran code execution speed

Almost sounds like there's a bunch of cached data that's being sloshed around. Hibernation dumps the entire active memory of the PC onto hard drive.

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RE: Fortran code execution speed

not uncommon for dual monitors to load down a lap top, but a lot depends on what else is running while at work

RE: Fortran code execution speed

Where does your data reside: is it on the machine itself or on a networked drive?

Many companies give you a powerful machine with next to nothing on it and they give you a roaming profile (something like the H: drive), which most people treat as a local drive. This is great for word processing but when it comes to number crunching, it is really slow.

What happens when you have code and data on the local drive?

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