From what knreed wrote before, the task would test if it can run on a host and if it fails to end in error. Yes, keep it until techs come back.

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For the hubba hubba hubba department, 2 half days stats of this mixed HCC CPU/GPU test:

Results Hrs/Task Crd/Hr (not points!)
1,088    0.8961   57.12218
2,178    1.4693   57.12185

Take it with a pinch of salt as the GPU side of the reward is WIP.

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P.S. [ot] Anyone knows how to insert a spacing tab into BBCode for a table such as above on these forums? [/ot]

Go into the Boinc Manager, down by the clock, and then open the Messages section, older version have a tab at the top while newer version you have to click Advanced and then Event Log, near the top of the lines it gives the capability of the cards it finds. I have two AMD 5770's in this machine and it says:
3/14/2012 3:19:02 AM | | ATI GPU 0: ATI Radeon HD 5700 series (Juniper) (CAL version 1.4.1664, 1024MB, 1400 GFLOPS peak)

That is CAL version 1.4.? and is therefore NOT capable of doing the new gpu units from WCG! Version 2.1 or higher is required here at WCG.

I have an AMD 5870 in some other machines and it says:
3/14/2012 3:20:14 AM | | ATI GPU 0: ATI Radeon HD 5800 series (Cypress) (CAL version 1.4.1546, 1024MB, 2720 GFLOPS peak)
So the same thing it is NOT capable!!

I also have an Nvidia 560 Ti and it says:
3/13/2012 3:23:14 AM NVIDIA GPU 0: GeForce GTX 560 Ti (driver version 27533, CUDA version 4000, compute capability 2.1, 962MB, 855 GFLOPS peak)
So it IS capable of gpu crunching here at WCG.

Compute capability relates to NVIDIA cards, not ATI/AMD cards.

CAL version is not OpenCL, the OpenCL details are on the next lines if an OpenCL capable driver is installed. For example, here's my HD 5870 as described in BOINC Manager Event Log:
ATI GPU 0: Cypress (CAL version 1.4.1664, 1024MB, 991MB available, 5920 GFLOPS peak)
OpenCL: ATI GPU 0: Cypress (driver version CAL 1.4.1664 (VM), device version OpenCL 1.1 AMD-APP (851.6), 1024MB, 991MB available)

For an older BOINC version that doesn't show OpenCL details you need the OpenCL tick in GPU_Z.

From the few tasks I received, a quick scan of errored wingmen indicates HD 4xxx (RV7xx) may not be supported. I think this relates to how AMD OpenCL runtime doesn't use GPU local memory on HD 4xxx cards, only on HD 5xxx and above.

I saw Redwood, Juniper, Cypress, Caicos, Turks, Barts, Cape Verde had completed tasks. Whether or not they produced useful results is another matter as the majority of tasks including 5 of the 8 my HD 5870 processed were marked Invalid or Too Late when there were 4 or more replications. This is probably to do with validator settings. The first task was completed on a Cayman and someone else reported success on a Tahiti Pro.

So I would say that probably HD 5xxx class and upwards and an OpenCL capable Catalyst driver is required.

From kashie's post the supplemental reading is that it's the additional OpenCL logged line that matters for ATI/AMD. What's yours saying?

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