[ale] Processor usage

[Jeff Hubbs]

Mksquashfs and clamav are a couple of apps I've seen multithread like crazy.


On 2/27/14, 11:09 PM, JD wrote:
> Write multithreaded code and more CPUs will be used automatically. No way to
> force a single-threaded app to use more than 1 core. Can't be done.  If a job,
> like C/C++ compiles can be split up, then more cores will be used too. Normally,
> passing the -j2 option into gmake will handle that. I'd think that java compiles
> would work the same way, but unless you can run multiple instances safely of a
> single-threaded application, there really isn't any hope of using more CPU.
>
> Video encoders have been multi-threaded for years. That is all that you were seeing.
>
>
> On 02/27/2014 04:49 PM, Adrya Stembridge wrote:
>> A colleague and I were looking at some ontology data yesterday using java via
>> command line.  I noticed that CPU utilization averaged 99% on a system with 24
>> cores.  The data processing is intense and time consuming.  We're wondering if
>> this could be sped up by forcing the machine to use more CPU resources.    In
>> the past, I've seen utilization reach around 1500% while encoding video.
>>
>> Is it possible (or safe) to instruct or force java to use more cores in
>> processing our data, or am I looking at this the wrong way?
>>
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