We have finally uploaded the new applications for Kepler supporting cuda4.2.

You should be receiving them if you have a recent driver. The new applications are substantially faster.

gdf

Substantially faster for what GPUs? Only those with the Kepler chips, or the older ones with Fermi chips also?

Fermi as well.

I'm still receiving CUDA 4.2 and CUDA 3.1 by turns on the same host.
I never thought that I'll become one of those who have to abort tasks selectively one by one....

For Windows users it's a good time to upgrade their drivers to 301.42, otherwise they won't receive CUDA 4.2 tasks (if they use the last recommended driver v285.58, or earlier)

I'm still receiving CUDA 4.2 and CUDA 3.1 by turns on the same host.
I never thought that I'll become one of those who have to abort tasks selectively one by one....

I suggest that the project duplicats under "Preference of GPUGRID/Run only the selected applications" the possibilities:
ACEMD standard: Cuda 3.1
ACEMD standard: Cuda 4.2
ACEMD beta
ACEMD for long runs (8-12 hours on fastest GPU): Cuda 3.1
ACEMD for long runs (8-12 hours on fastest GPU): Cuda 4.2

It is not so much that I care about speed, but in my special case, I suspect, that the Cuda 3.1 apps causes problems on my GTX570 with driver: 301.42, as I have posted before on other threads.

Interesting... Only one of my two rigs has completed a cuda3.1 WU since this announcement and thus become eligible for the long cuda4.2 app. However, the newly downloaded WU is labeled as using cuda3.1 still.

For kicks yesterday I disabled long WU's and selected only short WU's to test the system with the cuda4.2 app. It completed one WU without issue. So, I re-enabled only Long WU's yesterday afternoon.

Any reason why it would use a cuda3.1 app when the cuda4.2 app is available, for a GTX570 running 301.42 drivers? Should I try a detach/reattach after this WU's ends?

I let receive the GTX570 only short apps until yesterday evening. However this card got a mix of work of Cuda 3.1 and Cuda 4.2. It seems to me that the Cuda 4.2 is slightly more stable than the Cuda 3.1 on my configuration. I am actually crunching two long tasks Cuda 3.1, the first crashed after a few seconds (NAN). The second caused a crash of the computer, luckily after reboot, the computer continuous the same work unit.

I think detach and attach is no solution, as it will continue to get a mix. And for me is not practical, as this computer is used by a co-worker and should crunch silently in the back, without have to pause Boinc, when the computer is in use.

This problem of receiving multiple applications is probably a bug of the server.
I am going to investigate it with Boinc people or maybe do a server upgrade.

For now, you have to live with it. Sorry.

gdf

i got a unit on a gtx260 (win7 x64 latest boinc and drivers), but i had to abort it as it was making my computer completely unusable with 99% usage.

Is there any way to make it less aggressive? like 90-95% usage or am I doing something wrong?

On my 2nd rig, I saw the current cuda3.1 WU getting close to finishing. After it completed and uploaded, I clicked the "reset project" button in BOINC. Now, it could be a complete coincidence, but I did get a WU using cuda4.2 afterward.

I will let that run and see if I get any more cuda3.1 WU's.

Hmmm, the first 4.2 I recived crashed after about 12 min. The workunit seems to have crashed on another host as well.

Workunit is: http://www.gpugrid.net/workunit.php?wuid=3510440

Are you sure they are as stable for Fermi cards as Kepler cards? So far my GTX570 has been pretty rock-solid despite the fact my my computer is turned on/off almost every day (only running 24/7 in weekends)

Hmmm, the first 4.2 I recived crashed after about 12 min. The workunit seems to have crashed on another host as well.

Workunit is: http://www.gpugrid.net/workunit.php?wuid=3510440

Are you sure they are as stable for Fermi cards as Kepler cards? So far my GTX570 has been pretty rock-solid despite the fact my my computer is turned on/off almost every day (only running 24/7 in weekends)

I'm sure they are rock solid on Fermi. I have a couple of them running for more than 4 hours now, they will finish soon. However, your GTX 570 is overclocked to 830MHz, and as I've wrote about this problem in another thread earlier:
The CUDA4.2 failures could be caused by overclocking adjusted for CUDA3.1 tasks.
It's possible that many of us have to adjust GPU (and CPU) overclocking (and voltages and cooling) for CUDA4.2 tasks.
For example my GTX 480s need 25mV more for crunching CUDA4.2 tasks without failures, also my GTX 590s had to be set to 625MHz instead of 725MHz (I don't want to raise their voltage).
The CUDA4.2 tasks are less tolerant of overclocking than CUDA3.1 tasks, partly because they are running much faster on the same hardware and on the same clocks.

Yes, I have seen that other thread and have set the card to default speed now, so now I'm just waiting for the next 4.2 task to arrive :-)

Wow, almost forgot to bring my clocks back down. My 570 has a 4.2 up next.

Oh and, MJH long on my 680 took 4hrs with W7

Great work GPUgrid researchers. Fantastic improvement.

Edit. This about 53% faster than my 570 under 3.1

Hello: In my GTX295 with WIN-7 tasks CUDA 4.2 are working fine and faster, with OC (666Mhz)

The same GTX295 (no OC) on Linux does not work with CUDA 4.2...???

I will let that run and see if I get any more cuda3.1 WU's.

Well, 1st long cuda4.2 finished (and quite faster than cuda3.1, as promised). It immediately downloaded another cuda4.2. All seems well, though 2 WU's hardly indicates a pattern. Will keep an eye on it.


On my 2nd rig, I did the same thing after the cuda3.1 WU finished. "Project reset" in BOINC, and got a cuda4.2. There may be something to that, or again maybe just 3 for 3 luck.

If anyone isn't getting any cuda4.2's (or a mix), could be worth a shot to try it and see.

My two 570's (in separate machines) are factory OC'd to 797 Mhz and 780 Mhz. The 780 Mhz card finished a long WU about 30% faster with cuda4.2 than cuda3.1, and I didn't have any issues with errors. Also, given it is summer that card is running warmer than normal.

My 797 Mhz card is working on it's first long WU (did a short cuda4.2 WU yesterday w/ no issues), so we'll see how that goes. Maybe I am just lucky on the OC front.


I am liking the 90%+ utilization in Win7.

Hi All,


If you are interested in the increase in computational times, I've pasted my Nvidia 470 results below.

http://www.gpugrid.net/host_app_versions.php?hostid=82476

Looks like I just loaded up my first 4.2 app.
it's a Paola, which normally take around 12-15 hours on my 560ti @920.

I've dropped it to 880 for this one, and it's indicating a 5:45:00 min runtime.
If that proves correct, that's an amazing result!

whoa, using 96% GPU and 597 Mb of Ram. Best utilization I have seen!

WTG!!!!

Best work on Cuda 4.2 !
Same pc, same operating system, similar long time Wu .....
performance increased by 100% !
Now we can elaborate at double speed !
Warning for administrator ...
Thanks all !
k.

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Dreams do not always come true. But not because they are too big or impossible. Why did we stop believing.
(Martin Luther King)