Albert@home is still an unofficial, non-public test project. Don't expect anything to work here. The only type of work Albert@home is currently sending out is for a highly experimental BRP4 OpenCL application.

I've recently received some SSE and CUDA workunits. Should I consider them outdated workunits left over from Einstein@Home, or should I consider them Nvidia and CPU versions of the OpenCL workunits?

I've recently received some SSE and CUDA workunits. Should I consider them outdated workunits left over from Einstein@Home, or should I consider them Nvidia and CPU versions of the OpenCL workunits?

The latter. All BRP4 work units on albert can be considered equal and it doesn't matter whether they're run on a CPU, a CUDA device or via OpenCL. This allows us to check cross-platform/device validation and get a feeling for their relative performances. It also allows us to test BOINC's behavior in mixed-GPU (NVIDIA and AMD GPUs in one box) setups - so far the results look good.


Best,
Oliver

ATI OpenCL and CUDA32 don't validate together either.
http://albert.phys.uwm.edu/workunit.php?wuid=12465

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Jord.

BOINC FAQ Service

They say most of your brain shuts down in cryo-sleep. All but the primitive side, the animal side. No wonder I'm still awake.

ATI OpenCL and CUDA32 don't validate together either.
http://albert.phys.uwm.edu/workunit.php?wuid=12465

Not universally true but dependent on the NVIDIA GPU. My observation: a GTX 285 (Tesla) does, a GTX 580 (Fermi) doesn't. We'll investigate and will most likely tune the validator. It just takes some time since we're running low on manpower right now and got the download server issue at first prio.


Stay tuned,
Oliver

Another one then, http://albert.phys.uwm.edu/workunit.php?wuid=11889.
That's one OpenCL vs two CPU, guess whose work was deemed invalid? ;-)

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Jord.

BOINC FAQ Service

They say most of your brain shuts down in cryo-sleep. All but the primitive side, the animal side. No wonder I'm still awake.

Also looks like you need more stringent GPU capability detection.
this host has an OpenCL capable GPU, but for some reason on has 384MB memory. Thus all its tasks err.

As far as I know you can set up the scheduler to check for OpenCL capability, memory on the GPU, BOINC client used, etc. GPUs like this need to be locked out, before they're sent work as else it's using unnecessary bandwidth and confuses the user to no end.

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Jord.

BOINC FAQ Service

They say most of your brain shuts down in cryo-sleep. All but the primitive side, the animal side. No wonder I'm still awake.

you can set up the scheduler to check for OpenCL capability, memory on the GPU, BOINC client used, etc. GPUs like this need to be locked out, before they're sent work as else it's using unnecessary bandwidth and confuses the user to no end.

Yep, already on our TODO list (mostly done, memory requirements pending)...

Oliver

HD4890: 1WU = 62,806.60 sec = 17.5 hours and... 500.00 credits only, I guess? )
I understand, that A@H is a test project, but for my opinion it's a waste of time for HD4890.
Don't say me that HD4890 is a low-end GPU )
HD4890 brought me 1Ms in Collatz, MilkyWay, Moo! Wrapper.
In these projects HD4890 is more effective than GTX460, which usually spend only 1 hour for the same WU at Einstein@Home.

credits for this alpha project are 500 per WU that validates, irregardless of how long it takes to run. Also, last I read this project is soon not going to export stats, if they haven't yet turned that off.

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CAL ATI Radeon HD 4700/4800 (RV740/RV770) (1024MB) driver: 0.1

It seems Ageless and I have the same video card. Thus far, I haven't been able to validate a single WU:


http://albert.phys.uwm.edu/workunit.php?wuid=12534
http://albert.phys.uwm.edu/workunit.php?wuid=12549
http://albert.phys.uwm.edu/workunit.php?wuid=12550
http://albert.phys.uwm.edu/workunit.php?wuid=12551
http://albert.phys.uwm.edu/workunit.php?wuid=12294



Also (as mentioned above) it looks like there are problems with the nVidia cards validating with themselves (wu 12294):

The GTX 260 validates with the GTX 590, but not with the GTX 580.

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ATIOpenCL v1.19 doesn't validate with another ATIOpenCL v1.19 either:
TankMaster (HD 69xx) versus me (HD 4850) == http://albert.phys.uwm.edu/workunit.php?wuid=12850 (Completed, validation inconclusive) with a third task going out.

The next two tasks I have will be against other HD 48xx Radeons. I aborted all tasks that had CUDA or CPU as wingmen. They don't validate anyway so it's kinda useless to spend electrons on that at this time. Perhaps later again when there's been time to fine tune the validator even further.

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Jord.

BOINC FAQ Service

They say most of your brain shuts down in cryo-sleep. All but the primitive side, the animal side. No wonder I'm still awake.

ATIOpenCL v1.19 doesn't validate with another ATIOpenCL v1.19 either:
TankMaster (HD 69xx) versus me (HD 4850) == http://albert.phys.uwm.edu/workunit.php?wuid=12850 (Completed, validation inconclusive) with a third task going out.

After 5+ hours the third task finally went out, now to a CUDA GPU. I can tell you up front that this isn't going to validate.

Is HR a thought?

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Jord.

BOINC FAQ Service

They say most of your brain shuts down in cryo-sleep. All but the primitive side, the animal side. No wonder I'm still awake.

Hmmm... Forget HR. Forget using any HD4850 it seems, or any OpenCL 1.0 only GPUs? I noticed that Infusioned now does have credit, but he did so with a CPU task, not his HD4850.

http://albert.phys.uwm.edu/workunit.php?wuid=12832 is my HD4850 versus Alexone's (presumably) HD4850 or 4870. Validation is inconclusive.
The difference here being my Intel i3 versus his AMD XII perhaps? Or my 8GB of RAM versus his 4GB?

A third task went out to a CUDA, we all know how that's going to end. I'm ending my extra electron burn here, I aborted the other similar task, since it would put my GPU against Alexone's again anyway. Either my GPU is broken, or I use a driver version your app doesn't like (Catalysts 11.6), or it's the direction of the ley lines crossing under my computer room that break things. I stop testing for now and turn my attention fully to Skyrim. ;-)

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Jord.

BOINC FAQ Service

They say most of your brain shuts down in cryo-sleep. All but the primitive side, the animal side. No wonder I'm still awake.

you can set up the scheduler to check for OpenCL capability, memory on the GPU, BOINC client used, etc. GPUs like this need to be locked out, before they're sent work as else it's using unnecessary bandwidth and confuses the user to no end.

Yep, already on our TODO list (mostly done, memory requirements pending)...

Due to a bug in the BOINC client this has to wait until at least 6.13.13 (should be released soon).

Stay tuned,
Oliver

Either my GPU is broken, or I use a driver version your app doesn't like (Catalysts 11.6)

You need at least Catalyst 11.7 (8.872) since we use APP SDK 2.5 until further notice.

Oliver

Due to a bug in the BOINC client this has to wait until at least 6.13.13 (should be released soon).

Looks like there ain't gonna be a 6.13.13, but that instead it's going to be BOINC 7.0.x :-)

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Jord.

BOINC FAQ Service

They say most of your brain shuts down in cryo-sleep. All but the primitive side, the animal side. No wonder I'm still awake.

Either my GPU is broken, or I use a driver version your app doesn't like (Catalysts 11.6)

You need at least Catalyst 11.7 (8.872) since we use APP SDK 2.5 until further notice.

Darn, we just updated the validator (using less strict tolerances). We won't know whether the 11.6 you used before updating to 11.7 played a role in your tasks being considered invalid :-/

Oliver

What's it you're saying, Oliver? You want me to return to 11.6?
That's no problem. I'm here to test work for you, remember? Totally not in it for the credits. :-)

I'll run the one ATIOpenCL v1.19 I have started already to completion on 11.7, then switch back to 11.6

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Jord.

BOINC FAQ Service

They say most of your brain shuts down in cryo-sleep. All but the primitive side, the animal side. No wonder I'm still awake.

What's it you're saying, Oliver? You want me to return to 11.6?

No, you don't have to. You may of course do so as it wouldn't require a full core anymore. Maybe the relaxed validator settings let your tasks through now (we had to tune it anyway)...

Thanks for supporting this effort!

Oliver

Hello,

HD5770 fails after ~30 seconds
http://albert.phys.uwm.edu/result.php?resultid=51833

[19:27:27][4969][ERROR] Error during OpenCL FFT setup (error: -5)
[19:27:27][4969][ERROR] Demodulation failed (error: 2021)!

It is Debian unstable, fglrx 11.11, amd-app 2.5, BOINC 6.13.12. The installation of amd-app is essential. Without it, neither primegrid nor albert@H binaries can be executed.

Cheers,
Steffen

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