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Message boards : Number crunching : Does CPDN support MultiCore per Task
Message board moderation
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Send message Joined: 5 Aug 04 Posts: 178 Credit: 18,745,357 RAC: 45,842 |
Hi, I got the info, that I can run CPDN under Linux with MultipeCores (MT). How can I configure this ? Thanks in Advance Supporting BOINC, a great concept ! |
 Dave JacksonSend message Joined: 15 May 09 Posts: 4540 Credit: 19,013,957 RAC: 21,195 |
Hi,No need to configure anything. But you need to wait. Multi core tasks will be coming out probably later this year. See some of the discussions on OpenIFS tasks. |
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Send message Joined: 5 Aug 04 Posts: 1120 Credit: 17,202,915 RAC: 2,154 |
I got the info, that I can run CPDN under Linux with MultipeCores (MT). How can I configure this ? I run CPDN with Red Hat Enterprise Linux release 8.7 (Ootpa) The only tasks I have ever run using Multple Cores were MilkyWay ones. My app_config.xml file for MilkyWay looks like this. The only reason for the app_version part was to limit it to running only 4 cpus at a time. I think the default was to use 8 or more (I forget the exact number). So if you are willing to accept defaults, you do not need to do anything to configure this. Now if Oifs distributes multiple core applications, it might, or might not, require a different setup. It depends on how they implement the multiple-core applications. [/var/lib/boinc/projects/milkyway.cs.rpi.edu_milkyway]$ cat app_config.xml
<app_config>
<project_max_concurrent>2</project_max_concurrent>
<app_version>
<app_name>milkyway_nbody</app_name>
<plan_class>mt</plan_class>
<avg_ncpus>4</avg_ncpus>
</app_version>
</app_config>
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Send message Joined: 29 Oct 17 Posts: 1049 Credit: 16,432,494 RAC: 17,331 |
Hi,As Dave has already said there are plans for a multi-core OpenIFS app (not the current Hadley Centre models). I have a working version of the app in testing but there have been some issues getting it to work correctly across different machines, so for the time being it's still in development. |
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Send message Joined: 5 Aug 04 Posts: 178 Credit: 18,745,357 RAC: 45,842 |
As Dave has already said there are plans for a multi-core OpenIFS app (not the current Hadley Centre models). I have a working version of the app in testing but there have been some issues getting it to work correctly across different machines, so for the time being it's still in development. I have already helped testing Atlas@Home in Alpha- and Development stage, if you are interested, you can use my machines (Ubuntu 22.04) for further testing. PM me if needed, I would be glad to help. Supporting BOINC, a great concept ! |
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Send message Joined: 22 Feb 11 Posts: 32 Credit: 226,546 RAC: 4,080 |
How will ram usage scale with 8 threads compared to 8 workunits? |
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Dave Jackson Send message Joined: 15 May 09 Posts: 4540 Credit: 19,013,957 RAC: 21,195 |
How will ram usage scale with 8 threads compared to 8 workunits?Same memory needed. I can't remember where but Glen has posted this answer somewhere on the forums. I suspect that the handling of the multicore aspect will add a slight overhead but nothing significant. |
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Send message Joined: 12 Apr 21 Posts: 317 Credit: 14,831,845 RAC: 19,903 |
How will ram usage scale with 8 threads compared to 8 workunits? If I remember correctly, the most demanding OIFS model that's planned to be released is going to be a 4-core (set, not adjustable), 22GB RAM (total). There's also going to be an intermediate app which I don't remember the planned requirements for. Glenn is still working on those so the final requirements may change and they're probably a few months away from being released. |
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