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Re: ImageJ number of cores setting and hyperthreading

Posted by Stephan Janosch on May 28, 2015; 8:47am
URL: http://imagej.273.s1.nabble.com/ImageJ-number-of-cores-setting-and-hyperthreading-tp5012964p5012966.html

Am 28/05/15 um 10:02 schrieb Christophe Leterrier:
> In other words does ImageJ benefit from hyperthreading?

Your JVM will benefit from the multiple cores. As the JVM is running
ImageJ, ImageJ will benefit.

You should set the number of threads to the number of cores. Depending
on the model of your i7 cpu, you might even set the number to 8. Your
task manager usually shows you the number of usable cores which can
execute each a thread in parallel.

Depending on the plugins you use, you will see benefits. They either
look for the number of threads set or ask the JVM for the number of CPU
cores usable. Then the plugin executes it's workload in parallel.

BUT not all plugin have built in parallelism, so your milage my vary.

Have a good time with your new device.
Stephan

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Stephan Janosch
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