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Dr. Ronald C. Spencer

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Message 5614 - Posted: 25 Oct 2008, 13:02:45 UTC

When I first started MilkyWay@home the work units used to process within maybe about a half hour. Now the one I am working on has finished a little over 5.5% and taken about 3 and a half hours. When they start off they say they are about a half hour long to completion. So, how long does a typical work unit take to finish or are they like work units from othere Projects that start off slow but speed up fast once one has reached a certain point. I just want to know what to expect. Thanks a lot.

Ron
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Al

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Message 5615 - Posted: 25 Oct 2008, 13:17:59 UTC - in response to Message 5614.  

When I first started MilkyWay@home the work units used to process within maybe about a half hour. Now the one I am working on has finished a little over 5.5% and taken about 3 and a half hours. When they start off they say they are about a half hour long to completion. So, how long does a typical work unit take to finish or are they like work units from othere Projects that start off slow but speed up fast once one has reached a certain point. I just want to know what to expect. Thanks a lot.


A new project started during the summer. I takes me 11 hours to process one WU (according to BOINC - but even longer than that by the clock). The strangest thing to note is when the WU makes it to 50%, it finishes. See how long it takes for one to complete and they all should pretty much match it.

Al
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Dr. Ronald C. Spencer

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Message 5616 - Posted: 25 Oct 2008, 13:56:40 UTC - in response to Message 5615.  

Thanks for your input Al. Have a great weekend!

Ron
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Brian Silvers

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Message 5619 - Posted: 25 Oct 2008, 16:38:37 UTC - in response to Message 5616.  

Giving you the same response as I just put in another thread just a moment ago... I had the same question when I started... :)

There are 3 different lengths of tasks here. Tasks that start with "gs_371" are the shortest running tasks. Tasks that start with "gs_373" are the "medium length", although typically on the order of 30X the short tasks. Tasks that start with "gs_372" are the longest running tasks and are about 50X the short tasks. One additional thing to bear in mind is that the computation on a task is really "complete" here at what you will see in your BOINC client as "50% complete". Once a task gets to that point, it will complete very quickly after that...

Also, there may be stages of a task that are faster than others. The efficiency of the application is a sore spot right now. The performance may increase and the computational efficiency may level out across the entire workunit with a newer version of the science application, but that is all up to the project...

Brian
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Message boards : Number crunching : Question about the Work Units

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