Mac with Radeon HD4850-Boinc/Einstein detects workable video card but no video crunching ever happens
18 Feb 2014 2:08:17 UTC
Topic 197387
(moderation:
I've got a Mac with 16 gigs of memory, an Intel Corei7 2.8 ghz cpu and an ATI HD 4850 video card with 512 megs of memory.
Despite all this, I acquire and crunch work units but not via the video card.
The event log seems to say (in relation to issues regarding video crunching:
OpenCL: AMD/ATI GPU 0: Radeon HD 4850 (driver version 1.0, device version OpenCL 1.0, 512 MB, 512MB available, 402 GFLOPS Peak)
OpenCL: Intel (r) Core (tm) i7 CPU 860 @ 2.80 GHZ (OpenCL Driver Vendor: Apple, driver version 1.1, device version OpenCL 1.2)
Requesting new tasks for CPU and ATI
Scheduler request complete: got 12 new tasks
And so crunching proceeds, but not OpenCL crunching. On the PC side I have no issues with this.
Since there's no obvious error indicating a lack of resources or the like does anyone have any ideas why that isn't working on this particular hardware. I thought maybe it was the driver version for OpenCL on the video side but there seems to be a contradiction - I see version 1.0, 1.1 and 1.2 referred to.
I could run it under boot camp under Windows but that would be more inconvenient.
Ideas?
Thanks!
Mac with Radeon HD4850-Boinc/Einstein detects workable video car
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Is the host set to allow Binary Radio Pulsar Search (Perseus Arm Survey)?
Or have you tried those yet?
(and the ATI GPU setting of course)
and you probably know your Radeon HD 4850 is 800 SPU
The Radeon HD 4850 came out June 19, 2008 and I am not sure if it actually will run the GPU tasks and haven't seen it on the list but it may be here somewhere.
D'oh! I will check this
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D'oh!
I will check this out.
Yes, I'm aware of the age of the GPU in this thing - It's an economic thing. I'd love to replace everything but money hasn't grown on trees since the economy went down a bit.
I'll give it a shot as is though!
Yeah I just saw the price of
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Yeah I just saw the price of that card and it is cheap.
I don't have a Mac myself so I am not sure if that card will work for these GPU's so I am looking around right now for you.
Reading about the Mac OS and the card drivers (is your driver up to date?)
Looks like it may not run the GPU tasks
I have got several cards over the last couple years and the best price for wht it does here that I got was for the GeForce 550Ti for about $110
I have a couple of those and next up was the 650Ti's and the 660Ti was a bit expensive when it came out but I had to try it.
It also depends on your CPU and Ram and I have a 650Ti that is almost as fast as the 660Ti here just because of that.
RE: ... OpenCL: AMD/ATI GPU
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This line from the event log tells you that the HD4850 is an OpenCL 1.0 device.
Unfortunately, this project needs devices that are at least OpenCL 1.1. You will not be able to use the HD4850 here. I actually have 12 of these cards that I'd like to use here, but I can't. They all crunch over at Milkyway@Home. They are quite productive (despite their age) over there.
Cheers,
Gary.