Hi everyone,
After many failed attempts to start crunching data with my HD7990 on Ubuntu 16.04 and 14.04 (details here and here), I decided to make another step back and downgrade my system to Ubuntu 12.04. I successfully install the fglrx driver, and the Boinc client recognized the GPU with no effort.
After troubles with the "No CPU" configuration on the Gridcoin Pool (the pool is sending a XML file with a tag not recognized by the old version of the Boinc client), I manage to synchronized the pool with my unit, and the client started to download work packages for the CPU and the GPU.
I configured the Gridcoin Pool to send work for two projects that are only using the CPU (World Community Grid and TN-Grid Platform) and two projects that are supporting the ATI GPUs (PrimeGrid and Milkyway@Home). Unfortunate, the GPU work units ended up with massive number of computational errors.
Yes, it is generating heat, but the data processed is useless:
Curious is that for the PrimeGrid project, not all work units processed by the GPU are wrong, but only the ones using the Genefer application.
I will keep the current configuration few more days to experiment with different projects, but I plan to move back to Ubuntu 16.04 and try with different open source drivers (thank you @tomasbrod, for the hint regarding the opencl-mesa driver and the open source radeon driver!).
Just want to say , I run 1.2gW worth of systems ( 2 tablets + 4 phones + desktops + blades ) and part of development for the project admins and coders if invalid/corrupt WU's from errors while processing and or downloading etc. This is key in making things work wide spread such as new/old drivers and new/old kernels and kernel/module flags :) . Rosetta hates 1 quad core tablet and 1 oct core phone but loves the rest in my setup. This is a totally normal thing , but can also be caused by heat on the the south bridge and voltage issues to the GPU not just Linux core system and modules.
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You should check stderr.txt files for the failing tasks, maybe it would give us some clues. Critical errors are usually logged at the end of the file.
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Presumably the MilkyWay errors are part of the server problem (now fixed) they had last week.
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Nah, they wouldn't error out so quickly then. Server problem last week caused many tasks to be discarded during the validation process, not after just 2 secs of crunching. Not to mention that Primegrid GFN tasks are also erroring out.
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Thanks for mentioning me!
Genefer does not run for me under opencl-mesa either.
Under opecl-mesa, from primegrid only pps_sieve of would run.
Milkyway worked only under opencl-amd (which is userspace part of closed amdgpupro, with radeon opensource kernel module).
I have not tested Primegrid on opencl-mesa-git nor on opencl-amd.
I never succeeded in installing fglrx nor full amdgpupro drivers.
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Thank you for the valuable inputs.
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