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Number crunching :
Maximum number of tasks
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Author | Message |
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Send message Joined: 8 Mar 15 Posts: 12 Credit: 1,346,755 RAC: 0 |
Hi. How can I set a maximum number of tasks for Theory Simulations? I'd like to run almost 3 on my PCs. ASUS X570 E-Gaming AMD Ryzen 9 3950X, 16 core / 32 thread 4.4 GHz AMD Radeon Sapphire RX 480 4GB Nitro+ Nvidia GTX 1080 Ti Gaming X Trio 4x16 GB Corsair Vengeance RGB 3466 MHz |
Send message Joined: 27 Sep 08 Posts: 798 Credit: 644,669,701 RAC: 236,011 |
You can adjust settings in LHC@home preferences, under your account at the top right of web page. |
Send message Joined: 8 Mar 15 Posts: 12 Credit: 1,346,755 RAC: 0 |
I want to change the number of cores only for Theory Simulations, not for the project. Every task uses more than 2GB of RAM and I have other projects to run. ASUS X570 E-Gaming AMD Ryzen 9 3950X, 16 core / 32 thread 4.4 GHz AMD Radeon Sapphire RX 480 4GB Nitro+ Nvidia GTX 1080 Ti Gaming X Trio 4x16 GB Corsair Vengeance RGB 3466 MHz |
Send message Joined: 27 Sep 08 Posts: 798 Credit: 644,669,701 RAC: 236,011 |
I think you'll need to use an app_config.xml then. <app_config> <app_version> <app_name>Theory</app_name> <plan_class>vbox64_mt_mcore</plan_class> <avg_ncpus>1</avg_ncpus> </app_version> </app_config> |
Send message Joined: 2 Feb 15 Posts: 2 Credit: 2,849,962 RAC: 0 |
Ive just set up Theory Simulation for 8 tasks x 8cpu (estimated at 17hours) as i have 64 threads/64gig memory , thing is my cpu is only running at 40% with 20% memory usage, would i be better off running 2 tasks x 32 threads or any other combination? I just had a good run on Amicable numbers doing 1 task x 58 threads. |
Send message Joined: 27 Sep 08 Posts: 798 Credit: 644,669,701 RAC: 236,011 |
I run single core, however this requires the most RAM. Run the lowest number of threads that you can that fits in your ram, since you can save plenty of ram by running multicore/thread. |
Send message Joined: 2 Feb 15 Posts: 2 Credit: 2,849,962 RAC: 0 |
I run single core, however this requires the most RAM. OK by default it wants to do 2 x 32, what do i need to do 1 x 64 ? |
Send message Joined: 27 Sep 08 Posts: 798 Credit: 644,669,701 RAC: 236,011 |
You can edit your Max # of CPUs for this project to 1 or use the app config that I posted to limit the number of threads to 1. I can only do about 28 Theory concurrently with 128GB of ram |
Send message Joined: 7 Feb 14 Posts: 99 Credit: 5,180,005 RAC: 0 |
E.g. max 3 tasks for Theory (commented line: max 16 tasks for LHC@home) <app_config> <app> <name>Theory</name> <max_concurrent>3</project_max_concurrent> </app> <app_version> <app_name>Theory</app_name> <plan_class>vbox64_mt_mcore</plan_class> <avg_ncpus>1.0</avg_ncpus> <cmdline>--nthreads 1</cmdline> </app_version> <!--<project_max_concurrent>16</project_max_concurrent>--> </app_config> For project settings use LHC@home preferences, if you need it one day. Maybe your job cache on BOINC should be >> 0. Suppose you have a 16-threaded host. I don't know what exactly happens if BOINC downloads 5 Theory + 11 other LHC@home subproject or another project tasks. I think your computer would use only 3+11 threads and 2 would stay idle. |
Send message Joined: 8 Mar 15 Posts: 12 Credit: 1,346,755 RAC: 0 |
I want to set maximum number of tasks for both Theory and CMS. How can I do it in a single app_config.xml? ASUS X570 E-Gaming AMD Ryzen 9 3950X, 16 core / 32 thread 4.4 GHz AMD Radeon Sapphire RX 480 4GB Nitro+ Nvidia GTX 1080 Ti Gaming X Trio 4x16 GB Corsair Vengeance RGB 3466 MHz |
Send message Joined: 15 Jun 08 Posts: 2386 Credit: 222,873,593 RAC: 137,144 |
I want to set maximum number of tasks for both Theory and CMS. How can I do it in a single app_config.xml? To download or to run concurrently? An app_config.xml can only limit the number of tasks that are running concurrently. See <max_concurrent> and <project_max_concurrent> from Luigi's example. Simply add a CMS section. To limit the number of tasks to be downloaded you'll have to set a limit at your web preferences page and/or limit the work buffer of your BOINC client. |
Send message Joined: 8 Mar 15 Posts: 12 Credit: 1,346,755 RAC: 0 |
I wrote this in an xml file but BOINC tells me this: 23/11/2019 19:25:25 | LHC@home | Missing </app> in app_config.xml and I don't know what I have to write to add CMS settings. ASUS X570 E-Gaming AMD Ryzen 9 3950X, 16 core / 32 thread 4.4 GHz AMD Radeon Sapphire RX 480 4GB Nitro+ Nvidia GTX 1080 Ti Gaming X Trio 4x16 GB Corsair Vengeance RGB 3466 MHz |
Send message Joined: 15 Jun 08 Posts: 2386 Credit: 222,873,593 RAC: 137,144 |
This line is wrong: <max_concurrent>3</project_max_concurrent> Even in Luigi's example (sorry, didn't see this before) Strictly follow the template given here: https://boinc.berkeley.edu/wiki/Client_configuration Example: <app_config> <app> <name>CMS</name> <max_concurrent>2</max_concurrent> </app> <app> <name>Theory</name> <max_concurrent>3</max_concurrent> </app> <!--<project_max_concurrent>16</project_max_concurrent>--> </app_config> <app_version> sections are no longer required for Theory and CMS since both are singlecore. A BOINC client restart is required to reset the old settings. |
Send message Joined: 12 Jun 18 Posts: 126 Credit: 52,457,949 RAC: 23,953 |
A BOINC client restart is required to reset the old settings.Unless one is using BoincTasks 1.80 and the Extra/Read config files (cc/app_config). |
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