[Bug 106631] PALM: clpeak: Bus error (core dumped) & lots of GPU lockup

List overview All Threads
Download

newer

older

[Bug 106892] GPU hang with radeon...

[Bug 106584] segfault in...

bugzilla-daemon＠freedesktop.org

23 May 2018 23 May '18

1:51 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

Bug ID: 106631 Summary: PALM: clpeak: Bus error (core dumped) & lots of GPU lockup Product: Mesa Version: 18.0 Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 Assignee: dri-devel@lists.freedesktop.org Reporter: ricardo.ribalda@gmail.com QA Contact: dri-devel@lists.freedesktop.org

root@qt5022:~# time clpeak

Platform: Clover Device: AMD PALM (DRM 2.50.0 / 4.16.0-qtec-standard, LLVM 6.0.1) Driver version : 18.0.3 (Linux x64) Compute units : 2 Clock frequency : 0 MHz

Global memory bandwidth (GBPS) float : 5.42 float2 : 7.10 float4 : 6.69 float8 : 4.88 float16 : 0.43

Single-precision compute (GFLOPS) float : 18.90 float2 : 36.90 float4 : 38.66 float8 : 42.19 float16 : 53.13

No half precision support! Skipped

No double precision support! Skipped

Integer compute (GIOPS) int : 9.48 int2 : Bus error (core dumped)

real 20m10.785s user 15m58.717s sys 1m5.031s

-- You are receiving this mail because: You are the assignee for the bug.

Attachments:

attachment.html (text/html — 2.6 KB)

Show replies by date

bugzilla-daemon＠freedesktop.org

23 May 23 May

1:52 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #1 from Ricardo Ribalda ricardo.ribalda@gmail.com --- Created attachment 139710 --> https://bugs.freedesktop.org/attachment.cgi?id=139710&action=edit dmesg

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

1:53 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #2 from Ricardo Ribalda ricardo.ribalda@gmail.com --- libclc version: a2118d58fca567694edfabea78293e0dc9255500 (current HEAD)

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

4:52 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

Jan Vesely jan.vesely@rutgers.edu changed:

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

--- Comment #3 from Jan Vesely jan.vesely@rutgers.edu --- looks like the benchmark needs more than the allocated 10s to complete. you can adjust this via radeon.lockup_timeout kernel module parameter. You can check the used value at: /sys/module/radeon/parameters/lockup_timeout but you'll need to set it at boot time.

(In reply to Ricardo Ribalda from comment #0)

...

real 20m10.785s user 15m58.717s sys 1m5.031s

oh, that's pretty slow...

Referenced Bugs:

https://bugs.freedesktop.org/show_bug.cgi?id=99553 [Bug 99553] Tracker bug for runnning OpenCL applications on Clover

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

24 May 24 May

7:56 a.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #4 from Ricardo Ribalda ricardo.ribalda@gmail.com --- Hi Jan

I have increased lockup_timeout to 100K and I am not getting the bus error. But I am getting similar dmesg errors

root@qt5022:~# cat /sys/module/radeon/parameters/lockup_timeout 100000

root@qt5022:~# time clpeak

Platform: Clover Device: AMD PALM (DRM 2.50.0 / 4.16.0-qtec-standard, LLVM 6.0.1) Driver version : 18.0.3 (Linux x64) Compute units : 2 Clock frequency : 0 MHz

Global memory bandwidth (GBPS) float : 5.46 float2 : 7.17 float4 : 6.79 float8 : 4.89 float16 : 0.11

Single-precision compute (GFLOPS) float : 18.95 float2 : 36.90 float4 : 38.69 float8 : 42.19 float16 : 53.17

No half precision support! Skipped

No double precision support! Skipped

Integer compute (GIOPS) int : 9.49 int2 : 18.52 int4 : 18.41 int8 : 18.59 int16 : 18.05

Transfer bandwidth (GBPS) enqueueWriteBuffer : 1.21 enqueueReadBuffer : 0.63 enqueueMapBuffer(for read) : 2.30 memcpy from mapped ptr : 0.87 enqueueUnmap(after write) : 506.05 memcpy to mapped ptr : 0.88

Kernel launch latency : 608.36 us

real 29m45.765s user 18m55.669s sys 1m7.651s

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

7:57 a.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #5 from Ricardo Ribalda ricardo.ribalda@gmail.com --- Created attachment 139734 --> https://bugs.freedesktop.org/attachment.cgi?id=139734&action=edit dmesg 100k

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

8:07 a.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #6 from Ricardo Ribalda ricardo.ribalda@gmail.com --- Eventhough it is not comparable, for reference: this is the result with fgrlx.

root@qt5022:~# time clpeak

Platform: AMD Accelerated Parallel Processing Device: AMD G-T56N Processor Driver version : 1800.8 (sse2) (Linux x64) Compute units : 2 Clock frequency : 530 MHz

Global memory bandwidth (GBPS) float : 0.80 float2 : 1.12 float4 : 1.09 float8 : 1.31 float16 : 1.34

Single-precision compute (GFLOPS) float : 0.59 float2 : 1.16 float4 : 2.32 float8 : 4.42 float16 : 0.85

No half precision support! Skipped

Double-precision compute (GFLOPS) double : 0.43 double2 : 0.84 double4 : 1.46 double8 : 1.41 double16 : 0.28

Integer compute (GIOPS) int : 0.73 int2 : 0.30 int4 : 0.35 int8 : 0.40 int16 : 0.32

Transfer bandwidth (GBPS) enqueueWriteBuffer : 1.29 enqueueReadBuffer : 1.08 enqueueMapBuffer(for read) : 3591.11 memcpy from mapped ptr : 0.98 enqueueUnmap(after write) : 15339.17 memcpy to mapped ptr : 0.99

Kernel launch latency : 64.41 us

real 8m12.337s user 12m51.022s sys 0m29.840s

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

5:51 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #7 from Jan Vesely jan.vesely@rutgers.edu --- It looks like even 100s is not enough. Can you try running with no time limit? (set to 0). Looking at the numbers I think mesa's results are inflated by the kernel getting killed before finishing the computation. Looking at the numbers it can take significantly longer.

Did you by any chance build llvm in debug mode? that can inflate kernel compile times significantly.

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

5:55 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #8 from Ricardo Ribalda ricardo.ribalda@gmail.com --- I am using llvm/clang from https://github.com/kraj/meta-clang . Can you point me to something to check if the debug mode is enabled or not?

Thanks

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

6:01 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #9 from Ricardo Ribalda ricardo.ribalda@gmail.com --- (In reply to Ricardo Ribalda from comment #8)

...

I am using llvm/clang from https://github.com/kraj/meta-clang . Can you point me to something to check if the debug mode is enabled or not?

Thanks

Answer to myself. Seems to be a Release build : https://github.com/kraj/meta-clang/blob/master/recipes-devtools/clang/clang_...

But if you can tell me how to verify it in runtime I would love to try it

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

9:24 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #10 from Jan Vesely jan.vesely@rutgers.edu --- (In reply to Ricardo Ribalda from comment #9)

...

(In reply to Ricardo Ribalda from comment #8)

...
I am using llvm/clang from https://github.com/kraj/meta-clang . Can you point me to something to check if the debug mode is enabled or not?

Thanks

Answer to myself. Seems to be a Release build : https://github.com/kraj/meta-clang/blob/master/recipes-devtools/clang/ clang_git.bb#L78

But if you can tell me how to verify it in runtime I would love to try it

$ llvm-config --assertion-mode and $ llvm-config --build-mode

this won't change the GPU kernel running time, but it might speed up the kernel compilation time.

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

29 May 29 May

1:26 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

--- Comment #11 from Ricardo Ribalda ricardo.ribalda@gmail.com --- Seems that it is in release mode

root@qt5022:~# llvm-config --assertion-mode OFF root@qt5022:~# llvm-config --build-mode Release

-- You are receiving this mail because: You are the assignee for the bug.

bugzilla-daemon＠freedesktop.org

18 Sep 18 Sep

7:25 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=106631

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

--- Comment #12 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/638.

-- You are receiving this mail because: You are the assignee for the bug.

2059

Age (days ago)

2542

Last active (days ago)

dri-devel@lists.freedesktop.org

12 comments

1 participants

tags (0)

participants (1)

bugzilla-daemon＠freedesktop.org