Hi,

My CPU has four cores

I just installed an EGVA GeForce GTX 275 FTW expecting it would be another core to crunch. My HP laptop also has a CUDA and two cores and I've seen it running both cores and the CUDA at the same time.

Just to be sure I was not mistaken, I suspended all other DC endeavors (Rosetta and Climate prediction) and while I have 20 some SETI units, the only one running was the one CUDA processor.

I've rebooted with only the SETI enabled and still only the one SETI was running instead of five. Till I installed the video card today, all the 4 cores would be working on SETI

Idears?

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How many cores does your Operating System detect? Do you have your preferences set to not use the CPU while computer is in use?

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When I look I see you are running Boinc 6.6.28. The Current release version is 6.6.36. Presuming your host is
http://setiathome.berkeley.edu/show_host_detail.php?hostid=4979974
A Q6600

Please go to this link and download the 64 bit version as you are running Win7 64 bit

As Ozzfan states your Computing preferences for more than 4 cores and SETI@home preferences to use CPU and GPU.

Regards

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Please consider a Donation to the Seti Project.

How many cores does your Operating System detect? Do you have your preferences set to not use the CPU while computer is in use?

Hi,

I have two computers I use that run BOINC; one is an intel 4 core desktop computer and the other is an Intel 2 core laptop. Both have cuda video cards. On both, the task manager shows they are all enabled. Indeed, on the desktop there are 5 processes running with one being cuda on the laptop there are three with one being cuda.

my preferences are to use the CPU at all times. Whenever I have to use the processors for other computation I shut down boinc & restart.

I will reply to Pappa's reply next.

Thanks!

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When I look I see you are running Boinc 6.6.28. The Current release version is 6.6.36. Presuming your host is
http://setiathome.berkeley.edu/show_host_detail.php?hostid=4979974
A Q6600

Please go to this link and download the 64 bit version as you are running Win7 64 bit

As Ozzfan states your Computing preferences for more than 4 cores and SETI@home preferences to use CPU and GPU.

Regards

Hi,

My computers are set up as I just explained to OZZfan. Currently I'm on R&R & only have the laptop nearby and I won't be running the desktop till Monday. The version of BOINC I was using was the 64 bit version but I appreciate knowing about the newer update and just installed that on the laptop.

My GPU is enabled in both desktop and laptop.

One thing I find interesting is that even when I have BOINC set to run all the time, the GPU still waits till maybe 15 seconds after there is no keyboard or mouse activity. That shows good forethought on the designer's end.

However,I just ran the same test with the new 64 bit 6.6.36 on this laptop which is also using Win 7 and I still have the same issue that caused me to write the original post:

I am running Seti, Rosetta and Climate Prediction. Each are set at 100 so between the three each gets 33% of the resource share. I have extra Rosetta WUs, I have two Climate Predictions available butt one is suspended till the other is completed and I have maybe 15 seti WUs.

What I just did was suspend everything except for SETI and then waited to see what happened and the only thing that was running on SETI is the GPU, niether of the cores started on SETI.

So it seems as if the only thing that is going to be processing the SETI WUs is the GPU. If I suspend only climate prediction, Rosetta starts running the available core. If I now suspend all the Rosetta WUs the only SETI crunching is again, the GPU.

Ideas?

Thanks

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Of those 15 Seti WU's, How many WU's are for 6.03 and how many for 6.08?

Claggy

[edit] But only a minute and a half earlier :-) [/edit]

Do you have any SETI 6.03 tasks (for the CPU) downloaded?

[edit] Okay, Claggy asked earlier :-) [/edit]

Of those 15 Seti WU's, How many WU's are for 6.03 and how many for 6.08?

Claggy

[edit] But only a minute and a half earlier :-) [/edit]

Hi,

I'm sorry, I don't know what those numbers are in reference to. If it has something to do with age, they are all downloaded within the last day or so. Most of them for sure downloaded today.

Thanks!

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No, it's the version number of the application that is to run the task. It can be found in the Application column of BOINC manager's Tasks tab.

SETI@home Enhanced 6.03 is for the tasks that run on the CPU,
SETI@home Enhanced 6.08 is for the tasks that run on the GPU (CUDA).

Gruß,
Gundolf

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Computer sind nicht alles im Leben. (Kleiner Scherz)

SETI@home classic workunits 3,758
SETI@home classic CPU time 66,520 hours

No, it's the version number of the application that is to run the task. It can be found in the Application column of BOINC manager's Tasks tab.

SETI@home Enhanced 6.03 is for the tasks that run on the CPU,
SETI@home Enhanced 6.08 is for the tasks that run on the GPU (CUDA).

Gruß,
Gundolf

Ah,

Looking under the properties tab, all the WUs show 6.08, none are different.

Why would these WUs specific for cuda be the only ones downloaded, that's going to severely reduce the number of WUs I'll be rendering.

Thanks!

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Perhaps (and I'm guessing here) BOINC doesn't request more CPU tasks from SETI, because there are plenty from other projects.

Gruß,
Gundolf

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Computer sind nicht alles im Leben. (Kleiner Scherz)

SETI@home classic workunits 3,758
SETI@home classic CPU time 66,520 hours

Perhaps (and I'm guessing here) BOINC doesn't request more CPU tasks from SETI, because there are plenty from other projects.

Gruß,
Gundolf

I'm not sure of the speed of the GTX275 compared to my GTX295 but each of the 2 GPU's in my 295 produces about the same RAC as 2 of my (highly overclocked) Q9450 CPU cores. If the 275 is comparable in speed then you have effectively added the processing power of 2 more cores to your Q6600 and using the GPU alone should honour your required resource share between your projects - i.e. 1/3 to each.

If you really want to use CPU cores for crunching SETI as well then change the resource shares to 25:25:50 (the 50 for SETI) and you should see some 6.03 tasks come your way.

F.

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I have 2 gtx 275's an they run at 123 GFLOPS.
Don't know how that compares but they do an average 6.08 in 8mins and a shorty in 3 mins.

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I have 2 gtx 275's an they run at 123 GFLOPS.
Don't know how that compares but they do an average 6.08 in 8mins and a shorty in 3 mins.

Hmmm... Tasty. The Boinc est for the GTX295 is 106GFlops (stock speed). So that answers the question, then. The GTX275 is 1/3 of the processing power of the overall box (probably slightly more if the Q6600 isn't massively overclocked).

F.

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Boinc gives the 275 a 123 GFLOP rateing,but hasn't the 295 got 2 cpus so it would be double that 106 GFLOPS its's twice the price at £400 instead of £200.

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I have 2 gtx 275's an they run at 123 GFLOPS.
Don't know how that compares but they do an average 6.08 in 8mins and a shorty in 3 mins.

E6600 @ 2.4GHz with optimised application here. Average Work Unit takes about 1hour (some of them 1:20, a very few 1:30). Shorties take about 18min (a few about 15min).

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Grant
Darwin NT

Boinc gives the 275 a 123 GFLOP rateing,but hasn't the 295 got 2 cpus so it would be double that 106 GFLOPS its's twice the price at £400 instead of £200.

Yup. The 295 gets 2 x 106 GFlop lines of text in the Messages tab. But, as I said, that gets the same RAC overall as my Q9450 (i.e. is equivalent to an extra 4 CPU cores). So a single 275 should be equivalent to a pair of CPU cores - at least.

F.

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Understood Fred been out most of the morning and had lunch.

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I just got back to the desktop & am looking at the GFLOP ratings I get from Boinc regarding these CUDA cards

The laptop has a GeForce 9600M GT and it produces a 14G flop rating.

The desktop has the EVGA GTX 275 FTW which is the overclocked version of the GTX 275 coming with a 713 MHz core clock, 1512 MHz shader & 2520 MHz Memory clock: It produces 130GFLOPS

Working with the 6.08 WUs, out of the 8 WUs done since I started the computer; one was 1 min 2 seconds, one was 10 min 28 seconds and the rest are clustered around 9 min, 30 seconds.

Really a nice card.

Zippy...

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Question for ya'll running CUDA w/ a quad.... do you leave all 4 cores running or do you leave one core 'open' to keep the GPU feed?

Was this something that was tested back at some time? I ask because I read that using the beta ATI GPU App for Milky overall thruput was better on quads with one core left just to feed the GPU.

Thanx for any info ya'll can provide... shopping for a used nvidia card to stick into one of my number crunchers. Oh yea, I assume SETI GPU crunching works under 64bit Linux... gee, I should've looked for that first.

EDIT: Never mind, I see there's no Linux CUDA app on the apps page.
Screwed by Microshaft again.

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- da shu @ HeliOS,
"A child's exposure to technology should never be predicated on an ability to afford it."