[sdiy] SPICE and Processors

[Jerry Gray-Eskue]

multi processor systems can speed things up but for your spice to take full
advantage of multi processors it has to run in multiple threads (Separate
Processes). If it is single threaded it will run on only one processor.
However your other tasks will be spread out over the processors resulting in
more "free time" on the processor running spice.

The cheapest and easiest way to speed things up is to kill off as many tasks
as possible, that is to say run Only spice, No web browser, word processor,
etc. You may be surprised how fast spice will run when it is the only thing
running.

- Jerry

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl]On Behalf Of George Hearn
Sent: Saturday, July 25, 2009 7:37 AM
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] SPICE and Processors


I’ve been doing a lot of analogue spice recently and in particular feeding
audio into the simulation and generating .wav files from probes.  The
simulations are incredibly accurate but with a major drawback.. they take
ages.  10s of audio simulation might take 5 minutes! 
       So here’s the question, would a multi-core processor speed things
up?  Is a Core 2 Quad 2.8GHz going to run simulations faster than a Core 2
Duo 3.0GHz or is it clock rate which counts?  Do SPICE simulator engines
make use of multi-cores?  I use Proteus for simulation.  Thanks, George


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