What projects NEED CPU crunching?

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ProDigit

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Message 93784 - Posted: 18 Nov 2019, 21:49:04 UTC

What projects are most dependent on CPU crunching?
I'm thinking of putting a dual Xeon server to work, but would like to focus projects that are most in need of CPU crunching.

Preferably projects with lots of work, and that have no GPU support (GPU crunching goes a lot faster, if supported, so projects that preferably ONLY have CPU support).

I do run from Linux.
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Profile Joseph Stateson
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Message 93787 - Posted: 19 Nov 2019, 0:06:14 UTC - in response to Message 93784.  

What projects are most dependent on CPU crunching?
I'm thinking of putting a dual Xeon server to work, but would like to focus projects that are most in need of CPU crunching.

Preferably projects with lots of work, and that have no GPU support (GPU crunching goes a lot faster, if supported, so projects that preferably ONLY have CPU support).

I do run from Linux.


Been running my dual X5675 on World Community Grid. Really useful research being done there. keep 22 work units crunching and a pair of Milkyway running on the RX-570

System is liquid cooled but in the garage, during the summer, I had to drop the speed from 3.06 to 2.89. While not much of a drop it made a huge difference in temp. The board has only 4 slots, all x4 electrical.
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Profile Dave

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Message 93791 - Posted: 19 Nov 2019, 7:47:52 UTC - in response to Message 93787.  

Currently CPDN has lots of work for Linux. The nature of the work means it isn't suitable for GPU crunching as each calculation depends on the previous one so running lots of threads in parallel doesn't help. Some of the latest tasks do slow to a crawl if you don't have sufficient level3 cache however. These higher resolution ones take about 5 days on the fastest machines. (Almost forever on the one I am typing on which is slow and gets switched off when not in use!)

The newest type of task (openIFS) need 5GB/core of ram to avoid a lot of switching data out to the swap partition but we are still awaiting significant batches of these outside of the testing branch of the project. The openIFS are the only tasks on Linux that will run without having some 32bit libraries installed. (Instructions are on the forums for Red Hat, Debian and Ubuntu, the last having been updated for Ermine.
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Profile adrianxw
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Message 93793 - Posted: 19 Nov 2019, 8:09:13 UTC

I have a GPU, so see work from from some projects that use it / them. I have never seen any work from Rosetta that does that however. Might be worth a look for you.
Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.
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Message 93798 - Posted: 19 Nov 2019, 14:37:48 UTC - in response to Message 93793.  

Rosetta is a CPU only project.

Be warned that some tasks require 2GB or more memory so make sure you do not run more concurrent tasks / cores than you have total available RAM or it could crash you PC.
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Profile Dave

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Message 93799 - Posted: 19 Nov 2019, 14:55:31 UTC - in response to Message 93798.  

Rosetta is a CPU only project.

Be warned that some tasks require 2GB or more memory so make sure you do not run more concurrent tasks / cores than you have total available RAM or it could crash you PC.


And if they make the transition to main site from the testing branch, openIFS tasks from CPDN peak at 5GB or just over in ram at any one time. I tried running 1,2,3 and 4 at once on a machine with just 8GB or ram. Because they end up peaking at different times on the whole, 2 was not a major problem. Three or four at once and there was a major hit on performance due to swapping out to disk so much.
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Jim1348

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Message 93812 - Posted: 19 Nov 2019, 21:39:57 UTC

A very interesting one that is not listed on BOINC is TN-Grid, for genetic research.
Note that you need an invitation code, but it is listed on their front page.
http://gene.disi.unitn.it/test/index.php

They have reliable servers, and lots of work.
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Message boards : Projects : What projects NEED CPU crunching?

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