Message boards : Number crunching : Why no Tasks?
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Send message Joined: 24 Nov 12 Posts: 12 Credit: 2,022,109 RAC: 1,197 |
Been months, I'm sure my Processor and GPU can handle them. |
Send message Joined: 5 Sep 04 Posts: 7629 Credit: 24,240,330 RAC: 0 |
This project has never had GPU work. And all of the research groups that were supplying Windows work "disappeared" a year ago, for reasons unknown. So the project is currently Linux only. |
Send message Joined: 5 Aug 04 Posts: 1120 Credit: 17,202,915 RAC: 2,154 |
Been months, I'm sure my Processor and GPU can handle them. I have been running lots of tasks, mostly N216 tasks. Most usually 4 at a time (my current limit). I run Linux. PID PPID USER PR NI S RES SHR %MEM %CPU P TIME+ COMMAND 18762 18655 boinc 39 19 R 1.3g 19704 2.1 99.3 2 4660:06 /var/lib/boinc/projects/climateprediction.net/hadam4_um_8.52_i686+ 5326 5314 boinc 39 19 R 1.3g 19828 2.1 99.2 15 5438:16 /var/lib/boinc/projects/climateprediction.net/hadam4_um_8.52_i686+ 100855 100848 boinc 39 19 R 1.3g 19752 2.1 99.3 6 2278:47 /var/lib/boinc/projects/climateprediction.net/hadam4_um_8.52_i686+ 173508 173494 boinc 39 19 R 1.3g 19880 2.1 99.4 5 928:42.72 /var/lib/boinc/projects/climateprediction.net/hadam4_um_8.52_i686+ |
Send message Joined: 15 May 09 Posts: 4540 Credit: 19,039,635 RAC: 18,944 |
Been months, I'm sure my Processor and GPU can handle them. With respect to GPU processing, the nature of what a GPU has to do means that to produce good frame rates for games or high definition video, it needs to be able to do a lot of things at once. Climate modelling (at least the way it is done with most current models) is a sequential process with each calculation being dependent on the previous one. This means that the processing power of even a fast GPU would be largely wasted as it would not be able to use more than a fraction of its many threads. Even if the project had programmers well enough versed in GPU programming to port the applications, this means they would still be slow compared to CPUs doing the same job. I am not saying that climate modelling will never make use of GPU cards but I certainly don't see it happening in a hurry. Of course that doesn't mean some whizz won't come along and prove me wrong in the next couple of years but I don't know of anyone working on it at the moment. And to get work, the only reliable answer for this project at the moment is to run Linux either directly or through some sort of virualisation either VB or WSL etc. |
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