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Number crunching :
r503 OpenCL AstroPulse for ATI GPUs beta testing
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Author | Message |
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Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
New build has improved performance and supports new command line switches: -hp - sets high priority class -no_cpu_lock - disables affinity setting -instances_per_device N - will allow running N copies per each supported GPU device (don't forget to set <count> field in app_info to 1/N fraction to instruct BOINC to launch N tasks per GPU). App processing correctness and work of these new switches should be tested during this beta run. To participate in this beta run PM me link to host with ATI GPU where you plan to test this build. |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
@All who will participate: Don't forget to finish current AP task before upgrade. Or you will need to manually update CL file not only in SETI project directory but in corresponding slot directory too. BOINC doesn't do this, design flaw IMHO. |
Oleg Send message Joined: 23 Jul 09 Posts: 18 Credit: 235,786 RAC: 0 |
To participate in this beta run PM me link to host with ATI GPU where you plan to test this build. Ð”Ð»Ñ Ñ‚Ð¾Ð³Ð¾ что бы учаÑтвовать в теÑтировании тебе в личку линк кидать или что бы, те кто теÑтируют, кинули тебе в личку линк на хоÑÑ‚? ЗЫ: об машинный перевод Ñебе можно мозг Ñломать. |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
To participate in this beta run PM me link to host with ATI GPU where you plan to test this build. "Утром деньги - вечером ÑтульÑ" ;) Ðаученный горьким опытом, когда чиÑло Ñкачавших неÑколько деÑÑтков, а чиÑло хоть что-то потом напиÑавших - штуки, Ñ Ð±Ð¸Ð½Ð°Ñ€Ð½Ð¸ÐºÐ¸ выдаю только когда линк пришлют. Чтобы Ñ…Ð¾Ñ‚Ñ Ð±Ñ‹ Ñамому потом видеть как дело идет. |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
Looks like r503 contains not disabled debug dumps that will lead to disk space shortage and -177 error from BOINC (max disk space exceeded). Please, suspend current AP task in progress and await updated build. |
Mike Send message Joined: 17 Feb 01 Posts: 34272 Credit: 79,922,639 RAC: 80 |
That was close last night. I just started the new app before i readed your coment. Switched back quickly. With each crime and every kindness we birth our future. |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
Actually testing can be continued but carefully. One need time to time stop processing and delete stderr.txt from corresponding slot directory (it grows too big otherwise). |
Oleg Send message Joined: 23 Jul 09 Posts: 18 Credit: 235,786 RAC: 0 |
Actually testing can be continued but carefully. One need time to time stop processing and delete stderr.txt from corresponding slot directory (it grows too big otherwise). пока такого не наблюдаю. не понÑл что означает -no_cpu_lock при <cmdline>-hp -no_cpu_lock instances_per_device 1</cmdline> ВУ ÑчитаютÑÑ Ð¿Ñ€Ð¾Ñ†ÐµÐ½Ñ‚Ð¾Ð² на 20 быÑтрее (при ÑопоÑтавимом percent blanked) какие по умолчанию ffa_block и ffa_block_fetch? |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
наÑколько помню 8192 и 4096 (лучше поÑмотреть релиз предыдущей верÑии, много воды Ñ Ñ‚ÐµÑ… пор утекло). надо бы попробовать только -hp - будет тот же прироÑÑ‚ производительноÑти или нет. Ð²Ñ‚Ð¾Ñ€Ð°Ñ Ð¾Ð¿Ñ†Ð¸Ñ Ð²Ñ‹ÐºÐ»ÑŽÑ‡Ð°ÐµÑ‚ привÑзку к конкретному процеÑÑору, аффинити не будет задаватьÑÑ. ÐžÐ¿Ñ†Ð¸Ñ ÑпорнаÑ. ЕÑÑ‚ÑŒ Ñлучаи когда аффинити Ñильно помогает, а надо ли при обычном иÑпользовании - надо проверÑÑ‚ÑŒ. ПоÑтому добавил возможноÑÑ‚ÑŒ ее отключать еÑли надобноÑти нет. |
S@NL - John van Gorsel Send message Joined: 5 Jul 99 Posts: 193 Credit: 139,673,078 RAC: 0 |
One need time to time stop processing and delete stderr.txt from corresponding slot directory (it grows too big otherwise). Is there an other limit than the limit set under user settings? I have set this to 100 GB maximum (or 90% of the total disk space). The first task using the r503 build is now at 91% and the stderr.txt has grown to 616 kB. Seti@Netherlands website |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
One need time to time stop processing and delete stderr.txt from corresponding slot directory (it grows too big otherwise). There should be no problems on silent tasks. But if task contains many reportable signals stderr will be overflowed with whole arrays dump. I'll disable verbose debug code then give links to new version. |
S@NL - John van Gorsel Send message Joined: 5 Jul 99 Posts: 193 Credit: 139,673,078 RAC: 0 |
The first task ended just fine, and it seems a lot faster than the r456 release. The average of 0% blanking tasks was 5,150 seconds GPU and 1,700 seconds CPU. This first task was 3,719 seconds GPU and 1,333 seconds CPU. |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
I sent PMs with link to r504. If I missed someone, please, let me know. |
S@NL - John van Gorsel Send message Joined: 5 Jul 99 Posts: 193 Credit: 139,673,078 RAC: 0 |
A few observations: 1. The load on the GPU increased from 40% (r456) to 60-70% (r503) 2. I tried running 2 tasks at once by setting "-instances_per_device 2" and <count> to 0.5. Although it worked, I estimated the eventual runtime at 20 hrs for both tasks (= 10 hrs per task). Both tasks had 0% blanking. The GPU load was 95% when running 2 tasks simultanously. After 30 minutes I switched back to 1 task at a time. This was tested with an HD5870. |
Habster Send message Joined: 26 Sep 99 Posts: 2 Credit: 68,053,231 RAC: 0 |
Hello Raistmer, First message sent in forums (beleive it or not) Habster here has participated in the SETI@home project since 26 September 1999, and has contributed 3,566,059 Cobblestones of computation (3.08 quintillion floating-point operations) to SETI@home's search for extraterrestrial life. I bought a new rig recently with 1090T , 5850, asus m4a89gtpro 890gx chipset. Experimenting with r503..Would appreciate link to r504 and reporting my findings to the group.. Noticing you are doing great work with Ati GPU. Habster 1998 |
[AF>FAH-Addict.net]toTOW Send message Joined: 30 Nov 99 Posts: 11 Credit: 1,090,103 RAC: 0 |
Application and app_info updated ... but I'm waiting for AP WUs to start testing :( |
archae86 Send message Joined: 31 Aug 99 Posts: 909 Credit: 1,582,816 RAC: 0 |
Very preliminary observations on my low-end (80 stream processor, no fan) ATI card (GIGABYTE GV-R455D3-512I Radeon HD 4550 512MB) on a fairly high-end host E5620 Westmere overclocked at 3.42 GHz. 1. hot changeover to r504 from r456 seemed to work, all I did was to copy the two new files from the distribution rar to the SETI project directory and update the two executable references in app_info. I did not copy to any slot (I am set to suspend GPU work while computer in use, which seems to have the side effect not leaving the executable or .cl file behind in any slot when I am interacting with the host) 2. so far it appears that for my host with its settings there is not an obvious saving in GPU execution time. It seems more likely that an increase in GPU time will be needed, at least on the first WU. 3. so far it appears that there is a very big savings in CPU. With almost two hours gone, the CPU% displayed by BOINCTasks is 1.59%, I think in this condition with r456 this number would have been something on the order of 7%. I emphasize that these are very preliminary observations--partly meant to suggest that others check for both GPU and CPU changes, and also that we consider sharing other configuration parameters (#stream processors available is obvious, others may be important) which might drive differences in result. I've not yet tweaked any of the old configuration parameters, let alone any new options, seems best to get a little same-to-same comparison first. |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
Hello Raistmer, Send me lonk to your host with ATI GPU via PM. |
Raistmer Send message Joined: 16 Jun 01 Posts: 6325 Credit: 106,370,077 RAC: 121 |
This may result in task goint to trash. CL file definitely changed and its update is required. |
skildude Send message Joined: 4 Oct 00 Posts: 9541 Credit: 50,759,529 RAC: 60 |
ONe thing I've noticed with all the AP ATI apps is the credits seem to shrink. my latest WU only granted 589 credit which is a far cry from the 1200 it's supposed to be granted In a rich man's house there is no place to spit but his face. Diogenes Of Sinope |
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