Why isn't my entire processor being used/utilized when I execute a script file?
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Hi,
I'm not quite sure this problem pertains directly to MATLAB, but here it goes:
I have the Parallel Computing Toolbox and executed "matlabpool open." It has recognized the 4 physical cores of my i7. To monitor my CPU usage, I use a gadget on my desktop. When I execute a script file, I would expect all of my cores to ramp up to %100 usage. However, it doesn't. They all hover around 25%, as opposed to one core sitting around 30-35% prior to the PC toolbox. How come my processor is not being used to it's entirety?
Other info if needed:
MATLAB R2011a
Sony VAIO F-Series
i7-2670QM 2.20GHz
8GB Ram
nVidia GeForce GT540M
Battery settings are set to generic "High Performance" mode and the laptop is plugged in.
If any other info from my side could be of help, let me know.
Thanks,
Sam
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Jason Ross
am 28 Jun. 2012
Bearbeitet: Jason Ross
am 28 Jun. 2012
Are you using functions from the Parallel Computing Toolbox like parfor, spmd, jobs/tasks, batch, etc?
Is your code doing something that's not processor-intensive (like reading in a large file)
How much RAM is utilized? If you have exhausted the RAM and are relying upon much slower disk access, the CPU will not be fully utilized.
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Samuel
am 28 Jun. 2012
1 Kommentar
Jason Ross
am 29 Jun. 2012
You might want to take a look at using batch first, it might do exactly what you want.
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