Hey everyone,

Just been trying to run the new Beta application to test out the speed increase. However it doesn't start. I usually run Collatz on my computer. (MacbookPro running Win7) Boinc 6.10.29

The Collatz runs fine but when there aren't any Collatz WU's and only GPUGRID is available it doesn't start crunching, only saying "Ready to Start". I tried resetting the project, closing and opening Boinc etc. Any help would be appreciated as I would like to contribute.

Thanks in advance.

I had the same problem on 2 machines. First try rebooting. If that doesn't work, reset the project. If that doesn't work, detach and reattach.

Just figured out that I need a video card with 384 megs of memory, That error didn't pop up until recently. Shoot.

Thanks though!

I also have a card that now won't start GPUGRID WUs. It's been running this project for months and all of sudden will DL WUs but won't start them. Other GPU projects run fine. It has 384MB memory, all of my other cards have 512MB or more. Has the memory requirement been raised in the last week or so?

Does this happen with beta wus only? Beyond: which host please?

Thanks for the detailed report. It could be that at some point a server update raised the CUDA memory requirement by a tiny bit (the official scheduler has undergone many changes lately).

However, right now there are WUs being crunched by 9600 GTO's reporting 402653184 bytes (=384MB), e.g. 1814132. Nevertheless, video memory may be eroding the amount a bit, or the client may be misreporting.

More 384MB crunchers having/not having the same problem?

My understanding is that the default BOINC server code - supplied as an example for projects to customise only - suggests:

Minimum GPU RAM 256 MB for plan_class cuda
Minimum GPU RAM 384 MB for plan_class cuda23

(perhaps minus a couple of meg in both cases to allow for rounding errors in client reporting). If your GPU has less than the minimum specified in the plan_class, the scheduler shouldn't send you any work in the first place.

In addition, there's new code in BOINC clients v6.10.25 and later, which checks the amount of available GPU RAM, and won't start the task if that's below the minimum specified by the project.

This bites if you have an operating system with fancy video effects, like Windows Vista/7, OS X, or even some of the fancier Linux desktops. [Some people have said that merely setting high-resolution display modes can cause problems, but I don't think that's confirmed, or even likely].

If those conditions describe your setup, try turning off the OS graphics effects (and any other program that might be using GPU RAM), and try again.

My understanding is that the default BOINC server code - supplied as an example for projects to customise only - suggests:

Minimum GPU RAM 256 MB for plan_class cuda
Minimum GPU RAM 384 MB for plan_class cuda23

(perhaps minus a couple of meg in both cases to allow for rounding errors in client reporting). If your GPU has less than the minimum specified in the plan_class, the scheduler shouldn't send you any work in the first place.

In addition, there's new code in BOINC clients v6.10.25 and later, which checks the amount of available GPU RAM, and won't start the task if that's below the minimum specified by the project.

This bites if you have an operating system with fancy video effects, like Windows Vista/7, OS X, or even some of the fancier Linux desktops. [Some people have said that merely setting high-resolution display modes can cause problems, but I don't think that's confirmed, or even likely].

If those conditions describe your setup, try turning off the OS graphics effects (and any other program that might be using GPU RAM), and try again.

Thanks Richard. System is Win7 but Aero is turned off and resolution is set to 768x1024. No screensaver, plain as can be. No other programs running, just a dedicated cruncher box. Does GPUGRID need to specify 384MB ram or is it that they're just using the default? As I mentioned above the same problem happened at Collatz and they just changed the code to specify less ram since their client didn't use anywhere near that much anyway.

<gpu_ram>249561088.000000</gpu_ram>

for the new Beta app (<plan_class> cuda), but not set any limit for the established acemd v6.71 (cuda or cuda23)

I see your host 55407 has run two betas overnight: maybe they set that 238MB limit after your post.

We didn't explicitly change the setting, but I'm glad it started working.

I am having a similar "no start" issue. GTX260 with 196.34 drivers and 6.10.18 boinc client.

Any help??

Edit; the issue was with the boinc preferences....I am good to go.
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mike