hello gdf,

do you know if single precision cards could be used for this ? like 5770 ?

thanks for this enhancement anyway.

Hi i operate ATI 5870 system win 7 64 bit
bonic 6.10.18

bonic can not see a gpu, is telling that I do not have nvidia card..

I have marked accept beta works in settings?

are any beta samples for my PC ?

regards....

there is currently no beta work for ATi cards. if you read the whole thread from the start you can see that the ATi client is currently getting ready for beta testing.

GDF,

what's the results of ATI app testing?

BTW, later this week i'll get 4870, so feel free to use it for testing.

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I'm not GDF, but if I remember correctly, a post earlier in this thread said that the HD 48xx series has already been found not to be useful for GPUGRID with the current ATI driver due to the way global memory is implemented. Hopefully, a future ATI driver will change that.

Hopefully, a future ATI driver will change that.

Catalyst developers have clearly said that they will not change it. Hardware speaking, it would be very difficult if not impossible.
Only benefit HD4xxx will get will be from general optimizations. Memory management will always be terrible on HD4xxx

The current driver hangs the machine. We reported the problem to ATI.

gdf

We will support only 5xxx series cards based on the new GPU chips.

GDF

it's pity, but not a big deal at all. Anyway, 4870 is just a toy: I want to understand sould I stay with NV (future GTX395?) or should I move to ATI and get 5970 or even two of them. If 5970 will be not worse then future GTX395 and GPUGRID will start to support ATI most probably I'll mov to ATI, but if not - I'm staying with NV.

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Forget GTX395 for quite a while. Fermi is so amazingly large, they just can't put two of them onto one card. Not without lowering the clocks so much that it really hurts.

MrS

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Scanning for our furry friends since Jan 2002

We will support only 5xxx series cards based on the new GPU chips.

GDF

So the 57xx cards will also work? What about the 4770 since it's built on the 40nm chip? Thanks!

The 5xxx series saw a re-design, which in my opinion, was partially tailored to OpenCL, and the 4xxx series obviously isn't. During testing, they found that there is a significant (enough of a) penalty in the emulation of memory using global memory that made the application unfeasible.

hello,

i don't understand why gpugrid aske me to install beta driver and ati sdk also milkyway run with my 5850 without i must ATI app supply!

But i would prefer crunching for gpugrid but i see the atie sdk on the amd website but i no beta driver! Where i can dl theses beta driver?

Win7 64

@GDF
can you give us a little teaser about the performance of a ATI 58xx card with the new application?
How do they perform in comparison with a, lets say GTX285?

You'd currently need a beta driver because the other one doesn't work (don't know if the beta one does, though) and because the development is still in beta.

MrS

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Scanning for our furry friends since Jan 2002

Any cards performance is based on both the cards abilities and the application exploiting these abilities.
The ATI applications are still in Beta development and there is a new application for NVidia cards in the late stages of development. Refinements are continuing.

So it will be a while before both are released, and we are really able to test these against each other.

There would be little point saying how an ATI card performs now compared to an NVidia 1.3 capable card as these NVidia cards will soon get an approximately 60% performance boost from the new application!

Can't give you any performance data for the RV800 hardware yet because the OpenCL SDK is still causing us problems. In short, we have a prototype application working but the driver is very unstable and often crashes the machine. We are continuing to work on it, but it seems that the ATI software needs to mature quite a bit before we can release anything.

As an aside, the OpenCL app works acceptably under Nvidia's OpenCL runtime, albeit with lower performance (Nvidia's OpenCL and CUDA tools don't share a common compiler, I understand, and seem to apply different optimisations).

For any of you interested to learn about our approach to converting from CUDA to OpenCL, and to see a spot of early performance data on an RV700 card, take a look at http://www.cse.scitech.ac.uk/disco/mew20/presentations/GPU_MattHarvey.pdf (from early Dec 09, and already dating a little).

Matt

Would the existing (although recently lessened) Furrier Transform memory allocation problem disappear if OpenCL was used instead of CUDA for NVidia cards?
If not would it be worth trying to develop a custom FFT implementation?

Hi, we are implementing our own FFT implementation for both Nvidia and ATI.
gdf

ATI STATUS.
The situation with ATI cards is the following:
We failed to produce performances better than a GT8800 with a HD5850. Even bigger problem is that the ATI OPENCL SDK is still very unstable, hanging the machine easily, so that we cannot optimize the application until it is stable.

We currently don't know if we can make it faster or not, but certainly it will take several months before the SDK becomes stable enough to be of practical use.

GDF