From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 104604] [amdgpu/radeon][regression, CIK] Prefetch the compute shader to TC L2 (4a4ff66dbe) causes GPU VM errors when running OpenCL kernels on Hawaii
Date: Fri, 12 Jan 2018 16:25:21 +0000 [thread overview]
Message-ID: <bug-104604-502@http.bugs.freedesktop.org/> (raw)
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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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next reply other threads:[~2018-01-12 16:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-12 16:25 bugzilla-daemon [this message]
2019-05-11 20:07 ` [Bug 104604] [amdgpu/radeon][regression, CIK] Prefetch the compute shader to TC L2 (4a4ff66dbe) causes GPU VM errors when running OpenCL kernels on Hawaii bugzilla-daemon
2019-09-25 18:02 ` bugzilla-daemon
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