Hi, new to all this.., I have an I5 8400 on 100mb fibre.., the cpu was at 100% so I knocked back to 70%.., what should it be at?

Message boards : Number crunching : Hi, new to all this.., I have an I5 8400 on 100mb fibre.., the cpu was at 100% so I knocked back to 70%.., what should it be at?

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Profile Byron Leigh Hatch @ team Carl Sagan
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Message 90752 - Posted: 6 May 2019, 18:45:23 UTC

hi everyone :)
I'm back Crunching :)
Could someone answer the following question for peter a member of our team?

Best Wishes,
Byron.
Hi, new to all this.., I have an I5 8400 on 100mb fibre.., the cpu was at 100% so I knocked back to 70%.., what should it be at.., also how much data it using.., been 24/7 last few days... but never finishing??? how this all supposed to work.., what are credits.. for?
Cheers Peter


hi Peter,
I'm not sure?
Could you post your question on number crunching?

Best Wishes,
Byron.
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Message 90763 - Posted: 11 May 2019, 14:53:29 UTC - in response to Message 90752.  

The CPU % should be at whatever you set it to. I think 100% CPU would be the default BOINC setting when installed. You can then set BOINC Manager knobs to adjust the number of CPU and the % of time used as you like with the
OPTIONS -> CPU PREFERENCES -> COMPUTING tab.
You can turn off computing/GPU while you are using the machine too. I prefer limiting the number of CPU rather than the % because limiting the number allows the CPU have a constant workload.

Data used:
Rosetta uses a LOT of data com;pared to other projects. The database they download is about 300mb and their could be several versions on your machine at any instant. The database is copied to the "slot" directory and unzipped for execution. That unzipped version is about 2x the compressed size. There is 1 slot directory for each running Rosetta WU. The i5-8400 has 6/12 cores/threads. I would expect that BOINC would try to start 12 instances of Rosetta. 12 copies of Rosetta will take about 6-8 gb of disk.

You might check the EVENT LOG to see if there are messages that help.

Never finishing:
I have several suspicions here. Without knowing the OS type, Rosetta binary version running, BOINC settings, the amount of memory, disk or ...

1. The Rosetta 4.0 binary seems to need a 1gb of MEMORY at times, make sure you have enough memory to run the Rosetta WU. If you don't have enough memory, the Rosetta WU will end up paging/swapping and execution will slow to a crawl. Add more memory or limit the number of concurrent WU. There are some knobs you can add to an app_config.xml file in the Rosetta project directory to limit the number of max_concurrent WU running or you can just set the max number of CPUs if you are only running Rosetta .

2. I think the there are some Rosetta software bugs that allow the code to get into a deadlock condition. SUSPENDING the offending WU and then allowing it to restart might resolve the deadlock.

3. Check the amount of disk you have allocated for BOINC use and it is sufficient.
OPTIONS -> CPU PREFERENCES -> DISK
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Message boards : Number crunching : Hi, new to all this.., I have an I5 8400 on 100mb fibre.., the cpu was at 100% so I knocked back to 70%.., what should it be at?



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