Bug 829128 – dev-libs/pocl-1.8-r1: system is znver2, but *.bc file only znver1

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Bogdan 2021-12-14 00:02:49 UTC]

I have CPU: AMD Ryzen 4600H. This is znver2 architecture. But pocl package contains .bc file for znver1, not for znver2.

Reproducible: Always

Actual Results:  
LC_ALL=en ls -al /usr/share/pocl/*.bc
-rw-r--r-- 1 root root 3889744 Dec 13 19:51 /usr/share/pocl/kernel-nvptx64.bc
-rw-r--r-- 1 root root 6329164 Dec 13 19:51 /usr/share/pocl/kernel-x86_64-pc-linux-gnu-znver1.bc

Expected Results:  
LC_ALL=en ls -al /usr/share/pocl/*.bc
-rw-r--r-- 1 root root 3889744 Dec 13 19:51 /usr/share/pocl/kernel-nvptx64.bc
-rw-r--r-- 1 root root 6329164 Dec 13 19:51 /usr/share/pocl/kernel-x86_64-pc-linux-gnu-znver2.bc

[Comment 1 Bogdan 2021-12-14 00:04:16 UTC]

Created attachment 758837 [details]
emerge --info pocl

[Comment 2 Bogdan 2021-12-14 00:04:48 UTC]

Created attachment 758838 [details]
/etc/portage/make.conf

[Comment 3 Bogdan 2021-12-14 00:05:51 UTC]

Created attachment 758839 [details]
lscpu

[Comment 4 Bogdan 2021-12-14 00:07:53 UTC]

Created attachment 758840 [details]
zcat /proc/config.gz

[Comment 5 Larry the Git Cow 2022-01-03 07:41:49 UTC]

The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c127713269a116c187d54663e0523b9f79f11886

commit c127713269a116c187d54663e0523b9f79f11886
Author:     Sam James <[e-mail]>
AuthorDate: 2021-12-14 06:14:07 +0000
Commit:     Sam James <[e-mail]>
CommitDate: 2022-01-03 07:40:47 +0000

    dev-libs/pocl: use 'distro' option for built kernels
    
    We can't know what CPU the user will run the
    built package on (think of binpkgs) so let's
    use the 'distro' option which builds for
    most common SIMD instructions and chooses
    the most appropriate kernel it built at runtime.
    
    Closes: https://bugs.gentoo.org/829128
    Signed-off-by: Sam James <[e-mail]>

 dev-libs/pocl/pocl-1.8-r1.ebuild | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

[Comment 6 Bogdan 2022-01-08 10:53:45 UTC]

Why configurator detect "znver2" acrhitecture as "znver1" with "KERNELLIB_HOST_CPU_VARIANTS=native" option?

I think, that current solution - is quick way. But more correct way - resolve error in pocl configurator.

[Comment 7 Sam James 2022-01-08 22:55:11 UTC]

(In reply to Bogdan from comment #6)
> Why configurator detect "znver2" acrhitecture as "znver1" with
> "KERNELLIB_HOST_CPU_VARIANTS=native" option?
> 
> I think, that current solution - is quick way. But more correct way -
> resolve error in pocl configurator.

See the commit message. Native would be wrong for binpkgs and such anyway.

Please report that issue upstream.