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Date:      Wed, 02 Jan 2019 14:14:13 +0300
From:      Greg V <greg@unrelenting.technology>
To:        Tomasz CEDRO <tomek@cedro.info>
Cc:        FreeBSD Questions Mailing List <freebsd-questions@freebsd.org>, freebsd-x11@freebsd.org
Subject:   Re: AMDGPU RX580 OpenCL
Message-ID:  <1546427653.1787.0@smtp.migadu.com>
In-Reply-To: <CAFYkXjnVOspenga%2BM0oP-0pS=vxr4gmqs7XcrJZdSjnf1geEZA@mail.gmail.com>
References:  <CAFYkXjnVOspenga%2BM0oP-0pS=vxr4gmqs7XcrJZdSjnf1geEZA@mail.gmail.com>

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On Wed, Jan 2, 2019 at 3:35 AM, Tomasz CEDRO <tomek@cedro.info> wrote:
> Hello world in 2019 :-)
> 
> I have recently upgraded 11.2 to 12.0. I made AMDGPU work as my
> desktop Xorg driver. However I still did not make it work with
> OpenCL.. I have some error messages about kernel code missing.. and I
> get the Segmentation Faults at some point in clinfo.. do I miss
> anything?
> 
> Did anyone make OpenCL+AMDGPU+RX580 work?

Yes, you need two things:

- you might have to run OpenCL applications with 
LD_PRELOAD=/lib/libthr.so.3 (when they're single thread applications 
like clinfo) https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214204
- you have to rebuild the kernel driver with this patch 
https://github.com/FreeBSDDesktop/kms-drm/issues/33#issuecomment-422793245

keep in mind that Clover is not very good. It can't yet handle Blender, 
doesn't have image support for Darktable, etc.




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