avx feature/app
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avx feature/app
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Send message Joined: 21 Dec 12 Posts: 176 Credit: 136,462,135 RAC: 6 |
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Last modified: 30 Sep 2013, 17:14:36 UTC |
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@Dagorath: My stupid mistake. I wish I could attribute it to a lapse in memory but it's worse than that. I did the research and am embarassed to say I read it completely wrong. |
Send message Joined: 31 Jul 13 Posts: 5 Credit: 21,236,337 RAC: 0 |
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Last modified: 27 Oct 2013, 8:07:28 UTC For i7-2600K (4500MHz HT off) PerfMonitor2 show, that SSE3 version uses ~1.8 IPC (instructions per cycle) and AVX version uses 1.0 IPC. Calculation times is ~2400s.
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Send message Joined: 24 Jan 13 Posts: 5 Credit: 628,532 RAC: 0 |
With the last WUs I never got any avx app, only SSE2/3. I have 7.2.16 that should support this feature. Is there a problem with the scheduler? I guess BOINC-client 7.2.28 won't report the avx feature on Windows either. It was left off because of some software issues with whether Windows implements it properly. So I guess we will have to wait for the next Boinc release and/or the next beta release to see if it becomes a reported function. So I will have to continue to use custom app_info's for those projects that have avx optimized apps. |
Send message Joined: 3 Jan 13 Posts: 30 Credit: 1,705,200 RAC: 0 |
Just read this thread since I want to test the AVX app now on my i7s and the FX... The problem here is that you can't rely on the reported proc features because you also need an operating system explicitly supporting AVX. Windows 7 SP1 is supporting it for example, plain Win 7 not. I remember that the first public preview of Win 8 did not support it, either. It even gets more complicated if you run a virtual machine, since Virtual Box for example does not support AVX inside the virtual machine, even if the OS installed would. That is at least true for the last version I checked (4.2.16) and still use for RNA World and Test4Theory. Thanks for the posted app_infos, btw, saves me from reading the client_state.xmls again. ;) |
Send message Joined: 3 Jan 13 Posts: 30 Credit: 1,705,200 RAC: 0 |
Last modified: 13 Dec 2013, 19:54:13 UTC Just read this thread since I want to test the AVX app now on my i7s and the FX... First results indicate a 5% increase in results per hour with the AVX app compared to SSE3 on an 'Ivy Bridge' i7-3720QM. This is with 6 concurrent apps + one RNA World VM + one thread reserved for GPU apps (currently two Einstein BRP4G) and any overhead. So only confirming what has already been reported here. Throttling is not a big issue here, but this is only due to the fact that there is already substantial throttling with the SSE3 app. The avg. clock is only dropping from 2,99 to 2,97 GHz (min. 2,6 GHz, max. 3,4 GHz) here. So again no contradiction to what terencewee* has written. |
Send message Joined: 10 Jul 13 Posts: 21 Credit: 10,363,957 RAC: 0 |
Last modified: 29 Dec 2013, 19:43:41 UTC My friends, please beware AVX code on Hotwell = increased VID = more heat. Hello Thank you for the link. In order to receive only AVX, what should I do ? Put the SSE2 and SSE3 at 0 ? Thank You Kind Regards Philippe |
Send message Joined: 21 Dec 12 Posts: 176 Credit: 136,462,135 RAC: 6 |
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Send message Joined: 21 Dec 12 Posts: 176 Credit: 136,462,135 RAC: 6 |
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Send message Joined: 10 Jul 13 Posts: 21 Credit: 10,363,957 RAC: 0 |
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Send message Joined: 21 Dec 12 Posts: 176 Credit: 136,462,135 RAC: 6 |
Last modified: 30 Dec 2013, 15:54:59 UTC How do i add the GPU App in the app_info? See this post: http://asteroidsathome.net/boinc/forum_thread.php?id=235#2288 |
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Message boards :
Number crunching :
avx feature/app