Difference between sse2 and avx WUs


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scole of TSBT

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Message 4352 - Posted: 6 Apr 2015, 22:46:05 UTC
Just curious what the difference is between the 2. I can run sse2 on all 8 cores and keep temps at 60C. If I run 8 avs WUs, temps jump to 70+C. I know Kyong is too busy, but would be nice to make the avx WUs a different app so we could control how many run at a time. Or is there already some other way to limit avx to 4 active WUs?
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jiri kovar

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Message 4353 - Posted: 7 Apr 2015, 7:41:55 UTC - in response to Message 4352.  
AVX aplication on Haswell processors (AVX2) is very power and agressive. Computation time of wu go visible down. First help: off HT or use 50% processors. Second help: app.info
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Profile BilBg
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Message 4357 - Posted: 7 Apr 2015, 15:57:36 UTC - in response to Message 4352.  
So you prefer to run less effective app??

If you are afraid of overheating use:
TThrottle

Since you don't say which CPU of yours you talk about:
http://asteroidsathome.net/boinc/hosts_user.php?userid=61328

... find by yourself it's temperature limits.

You also seem to say the core temperatures "jump to 70°C"
but Intel defines TCASE Max:
"Case Temperature is the maximum temperature allowed at the processor Integrated Heat Spreader (IHS)."

Some similar CPUs:
http://ark.intel.com/products/65523/Intel-Core-i7-3770K-Processor-8M-Cache-up-to-3_90-GHz

TCASE 67.4°C

http://www.cpu-world.com/CPUs/Core_i7/Intel-Core%20i7-3770K.html



- ALF - "Find out what you don't do well ..... then don't do it!" :)
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Profile [AF>Le_Pommier>MacBidouille.co...

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Message 4415 - Posted: 24 Apr 2015, 17:18:32 UTC
Hi all!

Any difference between the 2 apps for Mac 102.11 sse3 and 102.11 sse3_osw??

Thx.
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Message 4417 - Posted: 26 Apr 2015, 0:32:18 UTC - in response to Message 4415.  
No
These 2 <plan_classes> are to allow both users using older and newer BOINC versions on Mac OS to get tasks for sse3 app, read:
http://asteroidsathome.net/boinc/forum_thread.php?id=255&postid=2555#2555
http://asteroidsathome.net/boinc/forum_thread.php?id=255&postid=2586#2586



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Message boards : Number crunching : Difference between sse2 and avx WUs