Posts by Vato

Info	Message
1) Message boards : Number crunching : New Work Discussion 2025 Message 71920 Posted 11 Jan 2025 by Vato	I have a number of 32GB machines that would run CPDN dedicated so I would like that option to be available if the model can cope please
2) Message boards : Number crunching : Feedback on running OpenIFS large memory (16-25 Gb+) configurations requested Message 71665 Posted 18 Oct 2024 by Vato	If you want to try out running with more threads, edit 'run_oifs' and change the '2' on the line 'OMP_NUM_THREADS' but I suggest keeping to 4 or less as the parallel efficiency drops off markedly beyond 4 threads. Hi Glenn - if the WU is using virtually all the memory on a machine, why would we worry about the efficiency dropping off? From my PoV, giving the WU all the cores is the best overall performance in this case. The extra cores running at only (e.g.) 20% efficiency, is still more work done per unit time. Or is the synchronisation required really that heavyweight?
3) Message boards : Cafe CPDN : Off topic posts. Message 71059 Posted 8 Jul 2024 by Vato	cancelling in-progress tasks often angers crunchers it seems
4) Message boards : Number crunching : OpenIFS Discussion Message 68406 Posted 21 Feb 2023 by Vato	at PrimeGrid, the names used in app_config.xml are displayed in the headers of the listing on the apps.php page, which makes a useful reference page
5) Message boards : Number crunching : OpenIFS Discussion Message 68390 Posted 20 Feb 2023 by Vato	all mine on 2 machines give much the same
6) Message boards : Number crunching : OpenIFS Discussion Message 68359 Posted 16 Feb 2023 by Vato	this approach works well at other projects, and i heartily support this
7) Message boards : Number crunching : How to Prevent OpenIFS Download Message 68080 Posted 27 Jan 2023 by Vato	i had not noticed those compute errors - apologies for the incorrect info and thank you for pointing it out. i am pretty certain that the times when they occurred i was doing something else on that machine, which i ought to stop doing.
8) Message boards : Number crunching : How to Prevent OpenIFS Download Message 68068 Posted 27 Jan 2023 by Vato	i have a 8GB machine that runs a single task at a time with 100% success rate. i have a 16GB machines that runs 2 tasks concurrently with 100% success rate. i believe any issue is not about absolute memory available, but how those machines run.
9) Message boards : Number crunching : The uploads are stuck Message 67677 Posted 13 Jan 2023 by Vato	one of my machines only has 8GB RAM and it has been working flawlessly (but subject to file upload issues) because i have max_concurrent set to 1 in my app_config.xml (project_max_concurrent would also work). but there is no way for this to be set by the server afaik - it has to be done by the user.
10) Message boards : Number crunching : Hardware for new models. Message 67303 Posted 4 Jan 2023 by Vato	There is the WUProp@Home project that does collect some metrics from BOINC machines and allows comparison between different hardware, but haven't check it recently and not sure how many CPDN users are on it. 71 running OpenIFS according to https://stats.free-dc.org/wupropapp/climateprediction.netOpenIFS%2043r3%20Perturbed%20Surface so there might be some useful data there
11) Message boards : Number crunching : Best Swap file size for CPDN? Message 67159 Posted 30 Dec 2022 by Vato	If vbox is the way to a windows app, so be it. But given we have a functioning native linux app, i would love to see a multi-threaded native linux app. I would run much of those. Whereas linux vbox is a total non-starter for me (many attempts, zero successes), and my few windows boxes won't have enough memory. Fingers crossed.
12) Message boards : Number crunching : The uploads are stuck Message 67134 Posted 30 Dec 2022 by Vato	downloaded tasks will continue as normal. only the downloading of further tasks is impacted.
13) Message boards : Number crunching : OpenIFS Discussion Message 66853 Posted 10 Dec 2022 by Vato	WUs from this app name wonâ€™t be downloaded to the computer, means limit the climateprediction.net WUs on a particular computer further? No, these max_concurrent settings only control the execution of these tasks once downloaded. The server selects which tasks to assign with no knowledge of your app_config.xml
14) Message boards : Number crunching : OpenIFS Discussion Message 66763 Posted 4 Dec 2022 by Vato	Credit granted to all my tasks - 2,353 each
15) Message boards : Number crunching : OpenIFS Discussion Message 66757 Posted 3 Dec 2022 by Vato	So if you can manage to keep the tasks running uninterrupted they should work (famous last words), or at least fail less often. I have not tried 'keep non-gpu tasks in memory' option, that might help. And I know I said OpenIFS shouldn't have restart problems, but it's not the fault of the model ;) I deliberately suspended a task for 8+ hours using the 'keep non-gpu tasks in memory' option, and it completed and returned the task seemingly cleanly and successfully.
16) Message boards : Number crunching : OpenIFS Discussion Message 66711 Posted 2 Dec 2022 by Vato	i will happily run tests on the dev server if invited. so far i have 9 tasks that appear to run well - no credit though