[A51] Query - Use of Kraken with CPUs

Joel Eriksson joel.eriksson at gmail.com
Thu Mar 27 13:45:31 CET 2014

I agree that the CAL code for a5_ilx and a5_ati should be updated to work
with the most recent AMD GPUs, of course. Regarding legacy boards requiring
legacy OS/drivers, that's fortunately not true though. I used an updated
Ubuntu with the latest version (at the time) of the Catalyst drivers and
AMD-APP-SDK with the Radeon HD 6990 board (*3) when I was working with
Kraken before, and it worked perfectly fine.

This is an interesting project in case anyone wants to try porting the
current CAL/IL code (500 lines of code in total) to GCN ISA code:

Joel Eriksson

On Thu, Mar 27, 2014 at 7:08 AM, Nikos Balkanas <nbalkanas at gmail.com> wrote:

> On Thu, Mar 27, 2014 at 7:43 AM, Sascha Krissler <sascha at srlabs.de> wrote:
>> AMD GPUs based on the GCN architecture are not supported by kraken.
>> TBH i already forgot the exact reason why that is, but AFAIR the
>> CAL api is simply not supported anymore.
>> GCN still supports AMD IL, but you need to use the opencl api and
>> the IL code must be adapted.
>> [...snip...]
>> to be clear once more: GCN GPUs are not compatible with kraken. to the
>> best
>>  of my knowledge that limits you to second hand hardware.
> All the more reason to update Kraken's ilx library. Not only it will be
> easier
> to find current boards, but they will be more powerful as well.
> Furthermore, legacy boards require OS's well past their EOL for their
> drivers, and
> legacy hardware and PCs that these outdated OS can support.
> Without updates kraken is doomed to a slow death of obsolescence :-(
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Best Regards,
  Joel Eriksson
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