Asking for Direction

Asking for Direction

[Josh Fuhs]

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Hi all,

I am trying to use a Radeon RX 5700XT via OpenCL with kernel 5.3.0 (I have also tried kernel 5.3.18) on Ubuntu 18.04. I have noticed that this combination is much slower than expected. I'm trying to find out why, and how to fix it.

If I'm in the wrong place to ask, would you be able to point me in the right direction?

If this is a known outstanding problem, a reference to a bug or something else that would let me dig into it would be great.

Thanks

Josh Fuhs

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Re: Asking for Direction

[Deucher, Alexander]

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[AMD Official Use Only - Internal Distribution Only]

Please make sure your kernel has this patch:

commit 46203a508f64b4bfa150a9d25eab1dc891e7e650
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Tue Oct 29 17:14:15 2019 -0400

    drm/amdgpu/gmc10: properly set BANK_SELECT and FRAGMENT_SIZE

    These were not aligned for optimal performance for GPUVM.

    Acked-by: Christian König <christian.koenig@amd.com>
    Reviewed-by: Tianci Yin <tianci.yin@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Alex
________________________________
From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Josh Fuhs <Joshua.Fuhs@pm.me>
Sent: Friday, January 31, 2020 12:48 PM
To: amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org>
Subject: Asking for Direction

Hi all,

I am trying to use a Radeon RX 5700XT via OpenCL with kernel 5.3.0 (I have also tried kernel 5.3.18) on Ubuntu 18.04. I have noticed that this combination is much slower than expected. I'm trying to find out why, and how to fix it.

If I'm in the wrong place to ask, would you be able to point me in the right direction?



If this is a known outstanding problem, a reference to a bug or something else that would let me dig into it would be great.

Thanks

Josh Fuhs

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Re: Asking for Direction

[Josh Fuhs]

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Thanks. I can confirm kernel 5.5rc7 improves things significantly. I'll post this to the various channels I've asked in.

Josh

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Friday, January 31, 2020 2:05 PM, Deucher, Alexander <Alexander.Deucher@amd.com> wrote:

> [AMD Official Use Only - Internal Distribution Only]
>
> Please make sure your kernel has this patch:
>
> commit 46203a508f64b4bfa150a9d25eab1dc891e7e650
> Author: Alex Deucher <alexander.deucher@amd.com>
> Date:   Tue Oct 29 17:14:15 2019 -0400
>
>     drm/amdgpu/gmc10: properly set BANK_SELECT and FRAGMENT_SIZE
>
>     These were not aligned for optimal performance for GPUVM.
>
>     Acked-by: Christian König <christian.koenig@amd.com>
>     Reviewed-by: Tianci Yin <tianci.yin@amd.com>
>     Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>
> Alex
>
> ---------------------------------------------------------------
>
> From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Josh Fuhs <Joshua.Fuhs@pm.me>
> Sent: Friday, January 31, 2020 12:48 PM
> To: amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org>
> Subject: Asking for Direction
>
> Hi all,
>
> I am trying to use a Radeon RX 5700XT via OpenCL with kernel 5.3.0 (I have also tried kernel 5.3.18) on Ubuntu 18.04. I have noticed that this combination is much slower than expected. I'm trying to find out why, and how to fix it.
>
> If I'm in the wrong place to ask, would you be able to point me in the right direction?
>
> If this is a known outstanding problem, a reference to a bug or something else that would let me dig into it would be great.
>
> Thanks
>
> Josh Fuhs

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