Hi everybody,
I'm trying to run Cal 1.2.0_beta on Windows XP 64-bit SP2 and a Club3D HD4870X2, but it won't work.
FindNumDevices reports 0 devices, all other example programs I have tested quit with the same error message.
Somebody from AMD: may I ask you to make a statement as to whether this configuration is supported at all? Before I waste hour after hour - thanks.
My configuration:
other than stated above, Catalyst 8.8 from AMD website (CD from manufacturer appeared to cause even more problems), hardware is a Supermicro mainboard for two Intel Xeon E5420 Quad-Core CPUs. PCIe is version 1.x.
I have only one display attached, I tried to enable the second, I got an error message stating I would have to disable Crossfire first, via the Crossfire entry in the CCC dialog box, which doesn't exist.
Any help is appreciated, thanks.
To be able to use two GPUs with the Stream SDK, we need to disable crossfire. But the 4870X2 is a specially wired card, which is why Catalyst does not allow disabling of crossfire. If there are two 4870X2s in a system, Catalyst should show the Crossfire option for those two cards.
We haven't tested 4870X2 with the SDK -- it is not on our supported cards. We wouldn't be able to use both the GPUs in that card until crossfire is disabled; the team is currently discussing the this feature.
Please let us know (or PM me) how and what project you plan to use the X2 for -- that will help in our prioritization.
I say this with a bit of hesitation (I have not tried the X2 myself) -- if you want to give it another shot, try on another OS, say XP32.
I'm planning to buy two 4870X2'a and I was also wondering how to disable Crossfire.
I understood Mike Houston implied on the Beyond3D forums that it's possible to use the X2's as two separate GPU's with CAL/Brook (just that the current Folding@Home GPU client fails to regognize them).
If you disable Crossfire with a dual card setup, would it also disable the "internal" Crossfire with the X2's? That's how it would work with Nvidia's Quad SLI.
BTW, I also have dual E5420's
Hi,
Speaking for myself, I haven't decided purchasing 4870X2 yet - I'm waiting for CAL SDK being able to fully utlilize it.
I would like to see it running on 64-bit Linux (Ubuntu preferred) and exposing full 2GB of its RAM (not 1GB mirrored as in Cross Fire mode). I would accept that I'll see it as two independent devices with 1GB RAM each as I'll take care about load balancing myself - granted that I'll be able to see all devices from a single client process, including other cards plugged in (I'm not sure how it will work via X, so that's why I'm asserting it).