Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Mon, 29 Mar 2021 21:33:14 +0200 Daniel Pocock wrote: > > > On 29/03/2021 11:49, Dan Horák wrote: > > On Wed, 24 Mar 2021 16:13:08 +0100 > > Daniel Pocock wrote: > > > >> > >> > >> On 22/02/2021 22:43, Dan Horák wrote: > >>> On Mon, 22 Feb 2021 21:19:26 - > >>> "Tom Seewald" wrote: > >

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 29/03/2021 11:49, Dan Horák wrote: > On Wed, 24 Mar 2021 16:13:08 +0100 > Daniel Pocock wrote: > >> >> >> On 22/02/2021 22:43, Dan Horák wrote: >>> On Mon, 22 Feb 2021 21:19:26 - >>> "Tom Seewald" wrote: >>> > On 22/02/2021 21:18, Tom Seewald wrote: > > > > Personall

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Wed, 24 Mar 2021 16:13:08 +0100 Daniel Pocock wrote: > > > On 22/02/2021 22:43, Dan Horák wrote: > > On Mon, 22 Feb 2021 21:19:26 - > > "Tom Seewald" wrote: > > > >>> On 22/02/2021 21:18, Tom Seewald wrote: > >>> > >>> > >>> > >>> Personally, I have an older GPU, RX 580 Polaris series,

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 22/02/2021 22:43, Dan Horák wrote: > On Mon, 22 Feb 2021 21:19:26 - > "Tom Seewald" wrote: > >>> On 22/02/2021 21:18, Tom Seewald wrote: >>> >>> >>> >>> Personally, I have an older GPU, RX 580 Polaris series, I will only >>> spend dev time on the AMD Navi GPU issues after AMD makes the R

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Mon, Feb 22, 2021 at 1:53 PM Alex Perez wrote: > > > > Daniel Pocock wrote on 2/22/21 10:41 AM: > > I feel that you underestimate the impact of the GPU driver issue > > > > If the GPU driver doesn't work, people can't even log in and get started > > > > If the GPU vendors don't test their code

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

David Woodhouse wrote: > On Fri, 2021-02-12 at 14:19 -0600, Justin Forbes wrote: >> Just as there are many things that expect the 64K page size. I am not >> doing this. > > I don't really find either of those to be compelling arguments, FWIW. > > If we have broken code which makes assumptions a

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Mon, 22 Feb 2021 21:19:26 - "Tom Seewald" wrote: > > On 22/02/2021 21:18, Tom Seewald wrote: > > > > > > > > Personally, I have an older GPU, RX 580 Polaris series, I will only > > spend dev time on the AMD Navi GPU issues after AMD makes the RX 6800 XT > > available in my region. I si

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

> On 22/02/2021 21:18, Tom Seewald wrote: > > > > Personally, I have an older GPU, RX 580 Polaris series, I will only > spend dev time on the AMD Navi GPU issues after AMD makes the RX 6800 XT > available in my region. I simply don't have that card and I'm not going > to waste money buying the

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 22/02/2021 21:18, Tom Seewald wrote: >> I feel that you underestimate the impact of the GPU driver issue >> >> If the GPU driver doesn't work, people can't even log in and get started > > I still do not understand why no one from the talos/ppc64le community is > following up on that amdgpu r

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

> I feel that you underestimate the impact of the GPU driver issue > > If the GPU driver doesn't work, people can't even log in and get started I still do not understand why no one from the talos/ppc64le community is following up on that amdgpu regression[1] that was introduced with the 5.9 ker

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

Daniel Pocock wrote on 2/22/21 10:41 AM: > I feel that you underestimate the impact of the GPU driver issue > > If the GPU driver doesn't work, people can't even log in and get started > > If the GPU vendors don't test their code on ppc64le (and aarch64) then > those platforms will always lag beh

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 22/02/2021 17:55, David Woodhouse wrote: > On Fri, 2021-02-12 at 14:19 -0600, Justin Forbes wrote: >>> Some things, like the AMD Radeon GPU drivers, firmware or related >>> code, appear to be completely non-functional on the 64k page size. >>> Insufficient upstream developers are testing such

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Fri, 2021-02-12 at 14:19 -0600, Justin Forbes wrote: > > Some things, like the AMD Radeon GPU drivers, firmware or related > > code, appear to be completely non-functional on the 64k page size. > > Insufficient upstream developers are testing such issues on this > > architecture. > > Just as th

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 16/02/2021 17:05, Peter Robinson wrote: >> On 15/02/2021 19:47, Gary Buhrmaster wrote: >>> On Mon, Feb 15, 2021 at 6:39 PM Dan Horák wrote: >>> The open question still is whether we should try to keep 64k as default as it would allow to find the remaining bugs and offer 4k kernel va

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

> On 15/02/2021 19:47, Gary Buhrmaster wrote: > > On Mon, Feb 15, 2021 at 6:39 PM Dan Horák wrote: > > > >> The open question still is whether we should try to keep 64k as default > >> as it would allow to find the remaining bugs and offer 4k kernel variant > >> (COPR for ppc64le should be coming

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

Hi, On 2/13/21 10:41 PM, Tom Seewald wrote: > The GPUs also have firmware blobs Could you provide some links to mailing list posts or bug reports where AMD developers confirm that their GPU firmware requires 4k pages? I think having some definitive sources will make this situation more clear

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 15/02/2021 19:47, Gary Buhrmaster wrote: > On Mon, Feb 15, 2021 at 6:39 PM Dan Horák wrote: > >> The open question still is whether we should try to keep 64k as default >> as it would allow to find the remaining bugs and offer 4k kernel variant >> (COPR for ppc64le should be coming back soon

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Mon, Feb 15, 2021 at 6:39 PM Dan Horák wrote: > The open question still is whether we should try to keep 64k as default > as it would allow to find the remaining bugs and offer 4k kernel variant > (COPR for ppc64le should be coming back soon), similar for the > installer (a new remix/spin). Af

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Fri, 12 Feb 2021 11:20:21 -0500 Ben Cotton wrote: > https://fedoraproject.org/wiki/Changes/Power4kPageSize > > == Summary == > > On ppc64le, the kernel is currently compiled for 64k page size. > > This change proposes using the more common 4k page size. > > Some HPC workloads may be disadv

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

> A few people mention it in the Raptor forums[2] If there are actually many other page size issues with amdgpu (or other drivers), then from what I can see the raptor/power9 community is unfortunately not reporting these problems upstream which makes it difficult for the developers to be aware

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 14/02/2021 05:41, Tom Seewald wrote: > > The GPUs also have firmware blobs > Could you provide some links to mailing list posts or bug reports where AMD > developers confirm that their GPU firmware requires 4k pages? I think having > some definitive sources will make this situation more cle

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

> The GPUs also have firmware blobs Could you provide some links to mailing list posts or bug reports where AMD developers confirm that their GPU firmware requires 4k pages? I think having some definitive sources will make this situation more clear. So far the only amdgpu bug report I could fin

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Sat, 13 Feb 2021 at 14:06, Alex Perez wrote: > Kevin, > > On 2/13/2021 9:51:48 AM, Stephen John Smoogen wrote: > > > On Sat, 13 Feb 2021 at 05:15, Daniel Pocock wrote: > >> >> >> On 13/02/2021 09:11, Tomasz Torcz wrote: >> > Dnia Fri, Feb 12, 2021 at 10:16:26PM +0100, Daniel Pocock napisał(a

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

Kevin, On 2/13/2021 9:51:48 AM, Stephen John Smoogen wrote: On Sat, 13 Feb 2021 at 05:15, Daniel Pocock mailto:dan...@pocock.pro]> wrote: On 13/02/2021 09:11, Tomasz Torcz wrote: > Dnia Fri, Feb 12, 2021 at 10:16:26PM +0100, Daniel Pocock napisał(a): >> >> >> On 12/02/2021 21:19, Justin Forb

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 13/02/2021 18:51, Stephen John Smoogen wrote: > > > On Sat, 13 Feb 2021 at 05:15, Daniel Pocock > wrote: > > > > On 13/02/2021 09:11, Tomasz Torcz wrote: > > Dnia Fri, Feb 12, 2021 at 10:16:26PM +0100, Daniel Pocock napisał(a): > >> > >> > >>

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Sat, 13 Feb 2021 at 05:15, Daniel Pocock wrote: > > > On 13/02/2021 09:11, Tomasz Torcz wrote: > > Dnia Fri, Feb 12, 2021 at 10:16:26PM +0100, Daniel Pocock napisał(a): > >> > >> > >> On 12/02/2021 21:19, Justin Forbes wrote: > >>> On Fri, Feb 12, 2021 at 10:21 AM Ben Cotton > wrote: > >

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 13/02/2021 09:11, Tomasz Torcz wrote: > Dnia Fri, Feb 12, 2021 at 10:16:26PM +0100, Daniel Pocock napisał(a): >> >> >> On 12/02/2021 21:19, Justin Forbes wrote: >>> On Fri, Feb 12, 2021 at 10:21 AM Ben Cotton wrote: https://fedoraproject.org/wiki/Changes/Power4kPageSize ==

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

Dnia Fri, Feb 12, 2021 at 10:16:26PM +0100, Daniel Pocock napisał(a): > > > On 12/02/2021 21:19, Justin Forbes wrote: > > On Fri, Feb 12, 2021 at 10:21 AM Ben Cotton wrote: > >> > >> https://fedoraproject.org/wiki/Changes/Power4kPageSize > >> > >> == Summary == > >> > >> On ppc64le, the kernel i

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On 12/02/2021 21:19, Justin Forbes wrote: > On Fri, Feb 12, 2021 at 10:21 AM Ben Cotton wrote: >> >> https://fedoraproject.org/wiki/Changes/Power4kPageSize >> >> == Summary == >> >> On ppc64le, the kernel is currently compiled for 64k page size. >> >> This change proposes using the more common 4

Re: Fedora 35 Change proposal: POWER 4k page size (System-Wide Change proposal)

On Fri, Feb 12, 2021 at 10:21 AM Ben Cotton wrote: > > https://fedoraproject.org/wiki/Changes/Power4kPageSize > > == Summary == > > On ppc64le, the kernel is currently compiled for 64k page size. > > This change proposes using the more common 4k page size. > > Some HPC workloads may be disadvantag