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Number crunching :
18,000 S@h-RAC - which GPU?
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Author | Message |
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Sutaru Tsureku Send message Joined: 6 Apr 07 Posts: 7105 Credit: 147,663,825 RAC: 5 |
My old GTX260 O/C have a ~ 18,000 S@h-RAC. Which NVIDIA GTX6xx and AMD/ATI HD7xxx would reach the same S@h-RAC (only with S@h Enhanced WUs)? (With WinXP 32bit. Other OS (Win7, 8) would give a speed up?) Thanks. * Best regards! :-) * Sutaru Tsureku, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. * |
rob smith Send message Joined: 7 Mar 03 Posts: 22202 Credit: 416,307,556 RAC: 380 |
A GTX660, or GTX670 should give you something like 18,000 without overclocking. Moving to a 64bit OS can have variable results - don't do it unless there are other reasons for doing the move, such as having to run applications that will only run on Windows7/64 bit. Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
Bart Send message Joined: 6 Jun 11 Posts: 2 Credit: 29,680,055 RAC: 0 |
I'm running a GTX660. RAC is still climbing but it looks like it will settle around 28,000 to 30,0000. Using the x41xc Cuda 5.0 app at http://jgopt.org/download.html |
W-K 666 Send message Joined: 18 May 99 Posts: 19062 Credit: 40,757,560 RAC: 67 |
As an indicator, a GTX670 has RAC, still rising after outage, of >20,300, at this moment in time. OS, win7 64bit. |
tbret Send message Joined: 28 May 99 Posts: 3380 Credit: 296,162,071 RAC: 40 |
My old GTX260 O/C have a ~ 18,000 S@h-RAC. My 660Tis are doing a little more than that (I can't tell for sure, but something in the low 20s is my best guess), so I'm guessing that a GTX 660 (no Ti) would give you approximately 20k RAC +/- 10%, running x41zc. In my personal opinion, you would not want to go less than a GTX 660, anyway. |
.clair. Send message Joined: 4 Nov 04 Posts: 1300 Credit: 55,390,408 RAC: 69 |
My 7970`s seem to be able to crunch over 20k rac if work supply is constant, They are not over clocked, yet. i still run out often because of limits and end up dooing E@H, The main cruncher is @ #18 atm. win7 64, luatics v0.40, ccc12.4, |
RWZeitgeist Send message Joined: 20 Feb 07 Posts: 10 Credit: 31,131,540 RAC: 28 |
My 6 core AMD computer with a Gigabyte GTX 670 (http://setiathome.berkeley.edu/show_host_detail.php?hostid=6721035) currently shows a RAC of nearly 27,000. Neither the processor nor the video card are overclocked. The 2GB GTX card runs three simultaneous SETI tasks. While the 6 AMD cores do run SETI tasks, the video card dominates the RAC score. |
Cruncher-American Send message Joined: 25 Mar 02 Posts: 1513 Credit: 370,893,186 RAC: 340 |
My 6 core AMD computer with a Gigabyte GTX 670 (http://setiathome.berkeley.edu/show_host_detail.php?hostid=6721035) currently shows a RAC of nearly 27,000. Neither the processor nor the video card are overclocked. The 2GB GTX card runs three simultaneous SETI tasks. While the 6 AMD cores do run SETI tasks, the video card dominates the RAC score. I would suggest you reserve at least 1 core of your 6 for GPU. My 6-core has 2 x GTX 460 running 2 WUs each and I reserve 2 cores for GPU. I find that when I go to even 5 cores for CPU processing, the (CPU time/elapsed time) for CPU WUs drops considerably (I'm getting a RAC of about 31K now on this machine), and I get less work done overall. |
W-K 666 Send message Joined: 18 May 99 Posts: 19062 Credit: 40,757,560 RAC: 67 |
My 6 core AMD computer with a Gigabyte GTX 670 (http://setiathome.berkeley.edu/show_host_detail.php?hostid=6721035) currently shows a RAC of nearly 27,000. Neither the processor nor the video card are overclocked. The 2GB GTX card runs three simultaneous SETI tasks. While the 6 AMD cores do run SETI tasks, the video card dominates the RAC score. I agree, looking at the CPU loading on my quad with 3 CPU tasks running the total CPU loading is regularly over 90% signifying that feeding the GPU with two tasks and doing all the other background work uses ~60% of one CPU. As this is my main computer I found doing 3 GPU tasks, which would be the option if it was a dedicated cruncher, made it unresponsive. |
petri33 Send message Joined: 6 Jun 02 Posts: 1668 Credit: 623,086,772 RAC: 156 |
Hi, You may want to take look at this: http://setiathome.berkeley.edu/show_host_detail.php?hostid=5643864 It runs Lunatics versions (AVX, V8, GPU) of both classic and astropulse. Current RAC after the outage is little over 41000. The CPU is an overclocked i7-3930K and has HT enabled, but Boinc is restricted to 50% of processors (6 out of 12). The single Gf560Ti448 is running 3 tasks simultaneously. -- Petri To overcome Heisenbergs: "You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65747 Credit: 55,293,173 RAC: 49 |
Hi, And 24/7 too I'd imagine, not bad. The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
petri33 Send message Joined: 6 Jun 02 Posts: 1668 Credit: 623,086,772 RAC: 156 |
24/7 yes, How do you heat your house - oil? -- No, computers... To overcome Heisenbergs: "You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones |
zoom3+1=4 Send message Joined: 30 Nov 03 Posts: 65747 Credit: 55,293,173 RAC: 49 |
24/7 yes, Natural Gas and the GTX590 equipped PC here... The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's |
dancer42 Send message Joined: 2 Jun 02 Posts: 455 Credit: 2,422,890 RAC: 1 |
as for Oklahoma in the US the computers so far, About 65 to 70 degrees. though I had hoped the recent snow would have allowed a second cruncher. hoping for about 120,000 RAC now that I can get AP. |
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