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Number crunching :
Linux port of Alex v8 code
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Author | Message |
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ML1 Send message Joined: 25 Nov 01 Posts: 20329 Credit: 7,508,002 RAC: 20 |
Hi all! Good to see you on the forums again Hans. And good for documenting the old WINE trick. Known Problems: No problem for s@h or other fpops counting applications. That would be a killer for other projects if they count the elapsed time! - crunching isn't done at nice level 19 (background priority) Is that the case even if you run WINE itself from "nice"? - You can't continue crunching your current linux WUs because BOINC detects a platform change and would discard them. No use in copying over files from your linux install. It is all using a different science client after all and on a different API. - No automatic startup of BOINC at boot time. I'll fix that shortly. Easily fixed in various ways. Happy Crunching indeed! Regards, Martin See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) |
Hans Dorn Send message Joined: 3 Apr 99 Posts: 2262 Credit: 26,448,570 RAC: 0 |
@Michael - Yup: yonah1:~# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 14 model name : Genuine Intel(R) CPU T2400 @ 1.83GHz stepping : 8 cpu MHz : 1833.412 cache size : 2048 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon bts [color=red]pni[/color] monitor vmx est tm2 xtpr bogomips : 3670.42 clflush size : 64 Hi Martin :o) |
Michael Send message Joined: 21 Aug 99 Posts: 4608 Credit: 7,427,891 RAC: 18 |
@Michael - Yup: and ht = hyperthreading? |
Hans Dorn Send message Joined: 3 Apr 99 Posts: 2262 Credit: 26,448,570 RAC: 0 |
Guess so. Obviously doesn't work properly - there's no hyperthreading on the T2400.... Regards Hans |
Michael Send message Joined: 21 Aug 99 Posts: 4608 Credit: 7,427,891 RAC: 18 |
Same with my Pentium-4 Mobile 2Ghz...says ht however, I don't have any hyperthreading. |
Cygnus X-1 Send message Joined: 15 Feb 04 Posts: 75 Credit: 3,732,505 RAC: 175 |
Well you can set it to nice level 19 manually but you have to do it for every WU because it will go back to 0 after a new one starts. Another issue I'd like to point out: Not very important but my AMD CPU is reported as being Intel |
brinx Send message Joined: 13 Dec 05 Posts: 11 Credit: 856,060 RAC: 0 |
I'm running AKV8 under wine 1.0 on my Q6600 with Linux (Sidux) 2.6.24 kernel and it seems that I cannot get more than 1 extra WU. The msg keeps coming back that I wouldn't have enough time to complete extra work. Is this related to the 0.0 CPU time feature of wine or something else. BTW THANKS for AKV8. it really romps along on my setup taking about 1 hour 12 mins to complete a WU on each processor. Fantastic! |
UncleVom Send message Joined: 25 Dec 99 Posts: 123 Credit: 5,734,294 RAC: 0 |
It looks like Crunch3r comes through again :-D http://calbe.dw70.de/index.html Special thanks to Alex Kan, Crunch3r, Jason G, Raistmer, JDWhale and anybody else I missed. UncleVom |
Stephen R Send message Joined: 25 Aug 99 Posts: 56 Credit: 3,736,096 RAC: 0 |
It looks like Crunch3r comes through again :-D Not sure that url works too get to the apps very well. Perhaps may be of use AK8 Linux 64bit AK8 Linux 32bit Regards |
UncleVom Send message Joined: 25 Dec 99 Posts: 123 Credit: 5,734,294 RAC: 0 |
Thanks for the fix up. This port really makes the penguins dance. Looks like a huge improvement on the few work units I watched so far, I don't want to do the % comparison for the small sample, but wow. Cores are running a degree or two C hotter. UncleVom |
Stephen R Send message Joined: 25 Aug 99 Posts: 56 Credit: 3,736,096 RAC: 0 |
No prob. Yep certainly does seem to make them penguins hop. Only finished one mixed WU so far myself, but new port seems to have shaved a nice chunk off the crunch time. Same as you I notice ~ 2C increase in core temp. Thanks! for keeping your eye out for the AK app. port to Linux. Regards |
UncleVom Send message Joined: 25 Dec 99 Posts: 123 Credit: 5,734,294 RAC: 0 |
The official word is out on the Lunatics site with a more complete explanation. http://lunatics.kwsn.net/ Thanks again to all involved! Looks like the penguins will finally be closing the gap on those cats and dogs. UncleVom |
Cygnus X-1 Send message Joined: 15 Feb 04 Posts: 75 Credit: 3,732,505 RAC: 175 |
It looks like Crunch3r comes through again :-D This is great! I'm making the switch as soon as I get back home after work. Thanks to all involved in making this happen. |
Sutaru Tsureku Send message Joined: 6 Apr 07 Posts: 7105 Credit: 147,663,825 RAC: 5 |
If it's the same hardware (QX6700) and I switch from WinXP AK V8 to LINUX AK V8, I would see more crunchingspeed? Which LINUX would be the best (performance) for only crunching rig? |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
Unknown, but possible. The Windows build should be a little faster overall, but on any particular system the only way to know for sure is to try it. Which LINUX would be the best (performance) for only crunching rig? The best OS is the least OS. Every CPU cycle the OS uses is one which cannot be used for crunching. Someone skilled with Linux could probably trim any distro down to the bare minimum, just as most of the background tasks of Windows can be tamed or eliminated. But in both cases, once the OS is using less than 0.5% of CPU it is probably not worth trying for further improvement. Joe |
Terror Australis Send message Joined: 14 Feb 04 Posts: 1817 Credit: 262,693,308 RAC: 44 |
This port really makes the penguins dance. Would be very interested in your times. I'm currently running AK-V8 under Wine on 2 rigs, A Q6600 and an E6700, both with a 3GHz O/C. Both are currently taking about 1hr:10Min to crunch a 73 credit unit. What times are you getting with the Linux version ? I've had reports back suggesting that running AK-V8 under Wine is a smidgen slower (Around 5 mins per unit) than running under Windows. It will be interesting to get some numbers on the Linux port. Regards Brodo |
UncleVom Send message Joined: 25 Dec 99 Posts: 123 Credit: 5,734,294 RAC: 0 |
This port really makes the penguins dance. This one should compare fairly easily, a Q6600 B3 running at 9 x 333. Asrock 4Core1600P35-WiFi motherboard, 2- 1GB sticks of DDR2 6400 4.4.4.12 timings. All the faster looking stuff from June 4th on is with the AK Linux 64 bit client. OS Debian AMD64 lenny/sid 2.6.24 kernel. You'll have to dig through the tasks I'd start with an offset of 400 or so. http://setiathome.berkeley.edu/results.php?hostid=4265438&offset=400 Please let me know what you find. Thanks, UncleVom |
Urs Echternacht Send message Joined: 15 May 99 Posts: 692 Credit: 135,197,781 RAC: 211 |
Looks like ca. 56 minutes per 73 cr. with AKV8 Linux 64 bit SSSE3 application. Brodo, that beats yours by nearly a quarter of an hour. _\|/_ U r s |
Terror Australis Send message Joined: 14 Feb 04 Posts: 1817 Credit: 262,693,308 RAC: 44 |
Yes, you can definitely pick the point where UncleVom changed apps, crunching time dropped by nearly 50%. Prior to that his crunching times were about the the same as I was getting before I hit the Wine :-) Looks like I'm going to have to get all geeky and change back to the native Linux app (damn, bother, blast, it took me 2 days to get Wine running properly on the E6700). 15 minutes per unit is worth chasing. Will report back when I have some results. Brodo |
Mumps [MM] Send message Joined: 11 Feb 08 Posts: 4454 Credit: 100,893,853 RAC: 30 |
Would be very interested in your times. I'm currently running AK-V8 under Wine on 2 rigs, A Q6600 and an E6700, both with a 3GHz O/C. I apologize for going slightly off-topic, but I'm trying to understand these numbers. If your Q6600 is overclocked to 3GHz, I'd think it should be doing better than 1hr:10Min for the average 73 credit unit. My Q6600 running WinXP 64bit with AKv8 is currently averaging 1hr:4min for similar 73 credit units. And I've so far only clocked it up to 2.52GHz. So I'd expect a 20% higher clockrate would mean a close to 20% matching decrease in crunch-time required, rather than roughly 5% more time needed. Could the 64bit O/S mean that much difference? Or maybe it's the RAM? (Mine is PC8500 running with the FSB at 1121MHz due to the overclocking.) Is your Q6600 a G0 stepping? Or B3? I haven't been having much luck catching wingmen with comparable systems, so I just thought I'd try asking. Thanks |
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