SR-base overheat !?
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Profile marsinph
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Message 4888 - Posted: 21 Jan 2019, 18:05:25 UTC

Hello,
I7-2600K Win7x64 8Cores
CPU TDP 95W
Cooler TDP 250W
Win7 X64
2x8Gb RAM
BAM set to use 75% of CPU time. Also on project.
The host (100501, visible by admin) have only OS/Java/Framework, nothing else.
This host is only used to crunch.

When I run SR with other project, CPU overheating (72°C !!!)
I was thinking some incompatibilty and/or wrapper using more than normal.

So, I runs SR fully alone, on 8 WU
The same, not depending the kind of WU !!! (short, long, avg,.....)

Someone the same ? Or idea ?
It happens only with SR. Sometimes with NFS when there are 4 project running.
But never so worst

Profile rebirther
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Message 4889 - Posted: 21 Jan 2019, 19:56:49 UTC - in response to Message 4888.

The llr app is using AVX/AVX2 and is highly optimized. You need a good cooling.

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Message 4890 - Posted: 21 Jan 2019, 19:59:50 UTC - in response to Message 4888.

SRBase is hot, best run in the cold winter months to keep you warm.

If your cooling is struggling, start with 1 thread for SRBase and increase the number of threads running SRBase until you get to a heat level you are comfortable to maintain 24/7.

Profile Tom Poleski
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Message 4891 - Posted: 22 Jan 2019, 2:43:49 UTC - in response to Message 4890.
Last modified: 22 Jan 2019, 2:46:16 UTC

I just reduce my CPU usage in BOINC to at most 75% of CPU time, that usually does it. But also I allow up to 79°C. With SRBase I always have to keep an eye on the average core temps. Piriform Speccy is a good util for that.
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Luigi R.
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Message 4892 - Posted: 22 Jan 2019, 8:35:54 UTC - in response to Message 4891.

If you run SR alone, you could set a lower frequency leaving the CPU at 100%.

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Message 4893 - Posted: 22 Jan 2019, 21:23:03 UTC - in response to Message 4890.

SRBase is hot, best run in the cold winter months to keep you warm.

If your cooling is struggling, start with 1 thread for SRBase and increase the number of threads running SRBase until you get to a heat level you are comfortable to maintain 24/7.



Hello ?
I will not move to artic or antartic because SR take so much !
Joke of course.

Profile marsinph
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Message 4894 - Posted: 22 Jan 2019, 21:28:51 UTC - in response to Message 4892.

Hello Luigi
I already have try your proposal, it not help very much !
I have let run only three WU on 8 cores.
Nothing else running. This host is ONLY for crunching.
Three WU running immediately to 70°C !!!
And i repeat it is not a problem of cooling failure.

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Message 4895 - Posted: 22 Jan 2019, 21:35:27 UTC - in response to Message 4894.

Hello Luigi
I already have try your proposal, it not help very much !
I have let run only three WU on 8 cores.
Nothing else running. This host is ONLY for crunching.
Three WU running immediately to 70°C !!!
And i repeat it is not a problem of cooling failure.


70°C is ok, at 80°C + its not good

Luigi R.
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Message 4898 - Posted: 23 Jan 2019, 8:31:46 UTC
Last modified: 23 Jan 2019, 8:32:46 UTC

What frequency have you tried?
Disable Turbo Boost.
Disable Hyper Threading or use 50% CPU.
Run 4 tasks, but...
Start from 2.0GHz and increase by little steps till you reach 70C.
Tjunction for these chips is around 98C, so don't worry.
Leave that frequency and good crunching!

P.S. My i7-4770k @3.5GHz is getting 70C with TB off. If I decrease frequency @2.1GHz, temperature drops to 50C. You should observe something similar.

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Message 4899 - Posted: 24 Jan 2019, 8:01:24 UTC

If you are on Windows then Throttle Stop is a great general clock control and for BOINC there is TThrottle which analyzses PID's, has a database of known BOINC WU's and pauses them for a few cycles in order to keep the core temps at the setting you pick. Also, allows maximum and minimum CPU usage that works way better than the built in BOINC version. Also works for many GPU projects (not very well on Collatz).

Not sure if there are Linux versions available but probably for TThrottle at least.

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Message 4900 - Posted: 24 Jan 2019, 8:04:57 UTC - in response to Message 4893.



Hello ?
I will not move to artic or antartic because SR take so much !
Joke of course.


BBC had a story about a lady in Siberia heating her house with BtC mining computers.

My house is completely warmed by computers this winter except tomorrow when the temps are going to drop to 6F outside. I'll fire up the wood stove and burn the branches gathered from the lawn plus sawdust and old magazines (saving on the trash bill too).

Picked the right part of winter to run some SRBase!


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