[Bug 104604] [amdgpu/radeon][regression, CIK] Prefetch the compute shader to TC L2 (4a4ff66dbe) causes GPU VM errors when running OpenCL kernels on Hawaii

[Bug 104604] [amdgpu/radeon][regression, CIK] Prefetch the compute shader to TC L2 (4a4ff66dbe) causes GPU VM errors when running OpenCL kernels on Hawaii

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https://bugs.freedesktop.org/show_bug.cgi?id=104604

            Bug ID: 104604
           Summary: [amdgpu/radeon][regression, CIK] Prefetch the compute
                    shader to TC L2 (4a4ff66dbe) causes GPU VM errors when
                    running OpenCL kernels on Hawaii
           Product: Mesa
           Version: 17.1
          Hardware: All
                OS: All
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: vedran@miletic.net
        QA Contact: dri-devel@lists.freedesktop.org

Commit 4a4ff66dbe radeonsi: also prefetch compute shaders enabled prefetching
the compute shader to TC L2 for CIK+. This causes GPU VM errors on Hawaii,
Kabini, and likely other CIK GPUs when running certain OpenCL programs (it
seems that the key is to call clCreateContext() twice or more, see below) with
Clover, both with amdgpu and radeon kernel drivers. I have tested with

01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Hawaii XT GL [FirePro W9100] [1002:67a0]

on Fedora rawhide (28) with kernel 4.15.0-0.rc7.git2.1.fc28.x86_64.

I'll minimize the example program that causes this (right now using GROMACS
tests, but that's unnecessarily complex), and provide the details (grepped +
full dmesg) in the comments for both amdgpu and radeon kernel drivers.

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[Bug 104604] [amdgpu/radeon][regression, CIK] Prefetch the compute shader to TC L2 (4a4ff66dbe) causes GPU VM errors when running OpenCL kernels on Hawaii

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https://bugs.freedesktop.org/show_bug.cgi?id=104604

Jan Vesely <jv356@scarletmail.rutgers.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |99553


Referenced Bugs:

https://bugs.freedesktop.org/show_bug.cgi?id=99553
[Bug 99553] Tracker bug for runnning OpenCL applications on Clover
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[Bug 104604] [amdgpu/radeon][regression, CIK] Prefetch the compute shader to TC L2 (4a4ff66dbe) causes GPU VM errors when running OpenCL kernels on Hawaii

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https://bugs.freedesktop.org/show_bug.cgi?id=104604

GitLab Migration User <gitlab-migration@fdo.invalid> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #1 from GitLab Migration User <gitlab-migration@fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1300.

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