On 07/01/2021 12:35, Dan Horák wrote: > Hi Daniel, > > On Wed, 6 Jan 2021 14:11:37 +0100 > Daniel Pocock <daniel@xxxxxxxxxx> wrote: > >> >> We did some more troubleshooting of AMD Radeon issues on ppc64 >> >> As with Nouveau, it looks like a change from 64k to 4k page size got it >> working again with RX 5700. I suspect it will be similar for RX 6800 if >> we can get some of them, they are a good complement for the compute power. >> >> The issue is page size, not ppc64 > > are you talking about Maurizio's issue? When I was talking with the guy > who fixed the Navi 10 driver for Power, he wasn't aware of any page > size issues. But it sounds plausible. Yes, it is in the Raptor forum To save reading, I gave him the following in an apt repository: - 5.9.6 kernel with 4k page size - mesa 20.3 - deps for mesa (llvm-11, libdrm, ...) He took the 2020-10-22 firmware snapshot from Debian unstable He disabled Wayland, to use Xorg It worked. I'm hoping that exactly the same set of packages will work for me whenever I can get my hands on an RX 6800 XT card. As mentioned elsewhere in this thread and in various parts of the Raptor forum, especially this[1] thread, there are a range of applications where page size appears to have some impact. I'd like to emphasize that there are a range of issues where page size does not appear to be a factor, there are a backlog of these issues. Therefore, emphasizing this quite strongly, I feel it is better for people to run 4k page size on workstations from F-34 so we can clearly flush out the PPC issues on 4k before we even begin to address issues with 64k. As examples, I have issues with Blender[2], Firefox[3] and JPEGs in OBS[4] where page size has been eliminated but I also have another issue[5] with Firefox, or maybe v4l2-loopback, where page size is a factor. Vikings and Raptor hope to sell a lot more of these systems when they go live in 2021. Vikings in particular has put great effort into a German-engineering water cooling solution, there is a leaked photo in the Raptor forum. Personally, I already identified the traps in this platform within hours of unboxing but I know a lot of the users, including Fedora users, will benefit from a slightly softer landing on POWER9. I can't personally spend time following every issue through to completion myself (unless somebody wants to offer me a bounty) but I try to document them as well as I can both here and in the bug trackers. Regards, Daniel 1. https://forums.raptorcs.com/index.php/topic,200.msg1463.html 2. https://developer.blender.org/T80912 3. https://bugzilla.mozilla.org/show_bug.cgi?id=1677216 4. https://developer.blender.org/T80912#1085758 5. https://forums.raptorcs.com/index.php/topic,200.msg1463.html#msg1463 _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
