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Computer resource usege low during optimization.

Question asked by augur on May 25, 2005
Latest reply on May 26, 2005 by ROB_LEFEBVRE

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In the company we have several computers loaded with eagleware 2004.7. In one of the computer (P4 3.2 GHz, 2GB RAM, Win XP Pro OS ) the processor usage is not even reach to 5% when I make the optimization. However some other slower computers allocate full usage of the computer resources and they work much (1 : 10) faster than the previous computer. As an example, During the optimization process One computer goes on 2 round, other one goes 12 th round of the optimization process.
Is there something wrong in the software or hardware?

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ROB_LEFEBVRE May 25, 2005 12:02 PM
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This is almost certainly a software issue due to other software (probably system processes) installed on the computer. GENESYS yields control periodically so that you can do other work on the computer. It also depends on graphics display drivers to update the screen. Very simplified explanation: One of these processes is probably taking control and blocking GENESYS from getting CPU time.

To confirm this, you can boot your computer into safe mode and then run GENESYS. If GENESYS speeds up, you then need to figure out what caused the conflict.

Rob Lefebvre
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ABOMPA May 26, 2005 1:08 AM
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Rob, Will upgrading the graphics card improve run time? Also, what is your recommendation for memory. I have 1G, which seems to be plenty considering EM simulations which require that much time have run times in days. What does Eagleware use?
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ROB_LEFEBVRE May 26, 2005 2:57 AM
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Assuming that the graphics card drivers are not the problem with your major slowdown, the card will have a negligible impact on GENESYS speed during long runs. GENESYS only updates the screen every two seconds during optimization or a long run, so the video card doesn't affect things much. There is one exception I can think of: If you are using a video card built into your motherboard, that can slow your entire computer's operation by 10-40%. If I had a compute-intensive system with a built in card, I would just put a cheap expansion card in and see if the system performance improves.

I have one gig on my development computer, but I don't do any simulations that will take days. 32-bit Windows can't reliably dole out chunks of memory much larger than that since the OS and other processes eat up a lot of the rest of the address space anyway.

One thing that I really like on my computer: I have a dual processor xeon. The xeon is pretty fast for floating point intensive programs like GENESYS, and I can also do things comfortably while GENESYS is running. Our next version (GENESYS 2005) also takes more advantage of the second CPU, although I don't have any formal benchmarks on that yet.

Rob
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Computer resource usege low during optimization.

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