[Bug 93374] [radeonsi] Tonga (Radeon R9 380) hangs on running hello world OpenCL program

[Bug 93374] [radeonsi] Tonga (Radeon R9 380) hangs on running hello world OpenCL program

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https://bugs.freedesktop.org/show_bug.cgi?id=93374

            Bug ID: 93374
           Summary: [radeonsi] Tonga (Radeon R9 380) hangs on running
                    hello world OpenCL program
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: rivanvx@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

I'm running a hello world PyOpenCL program from here:
http://documen.tician.de/pyopencl/ I get the same issue with a different OpenCL
program, e.g. one from bug 93370.

The message shown in the console is the same as bug 93264, but without the VM
line:

amdgpu 0000:01:00.0: GPU fault detected: 147 0x04588402
amdgpu 0000:01:00.0:   VM_CONTEXT1_PROECTION_FAULT_ADDR   0x0004008B
amdgpu 0000:01:00.0:   VM_CONTEXT1_PROECTION_FAULT_STATUS 0x08084002

The system is unresponsive and one has to do hard reset.

I tried reverting to one commit before c0a189c3792865257c1383f176e5401373ed2270
mentioned in the bug 93264, that is 26ddca196954ccfa697102b46118956ad616073a.
However, this did not fix the problem.

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[Bug 93374] [radeonsi] Tonga (Radeon R9 380) hangs on running hello world OpenCL program

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https://bugs.freedesktop.org/show_bug.cgi?id=93374

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Basically, OpenCL support for VI isn't implemented yet.

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[Bug 93374] [radeonsi] Tonga (Radeon R9 380) hangs on running hello world OpenCL program

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https://bugs.freedesktop.org/show_bug.cgi?id=93374

--- Comment #2 from Vedran Miletić <rivanvx@gmail.com> ---
What is missing? Can it at least not crash?

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[Bug 93374] [radeonsi] Tonga (Radeon R9 380) hangs on running hello world OpenCL program

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https://bugs.freedesktop.org/show_bug.cgi?id=93374

EoD <EoD@xmw.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |EoD@xmw.de

--- Comment #3 from EoD <EoD@xmw.de> ---
Is it possible to work around the lock?

I ran into the same issue, when I tried running clpeak (
https://github.com/krrishnarraj/clpeak ) on kernel 4.4.0-rc7 with current
mesa-git and an R9 380X.

kernel: amdgpu 0000:01:00.0: IH ring buffer overflow (0x000C01D0, 0x00000B40,
0x000001E0)
kernel: amdgpu 0000:01:00.0: GPU fault detected: 147 0x05f88802
kernel: amdgpu 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x0004009C
kernel: amdgpu 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x0A088002
kernel: VM fault (0x02, vmid 5) at page 262300, read from 'TC9' (0x54433900)
(136)

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[Bug 93374] [radeonsi] Tonga (Radeon R9 380) hangs on running hello world OpenCL program

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https://bugs.freedesktop.org/show_bug.cgi?id=93374

--- Comment #4 from EoD <EoD@xmw.de> ---
After upgrading to current llvm 3.8-git (2921ff9ffcfd09db1c), the program ran
fine:

$ ./clpeak 

Platform: Clover
  Device: AMD TONGA (DRM 3.1.0, LLVM 3.8.0)
    Driver version  : 11.2.0-devel (Linux x64)
    Compute units   : 32
    Clock frequency : 0 MHz

    Global memory bandwidth (GBPS)
      float   : 100.53
      float2  : 112.67
      float4  : 105.17
      float8  : 104.72
      float16 : 69.72

    Single-precision compute (GFLOPS)
      float   : 4006.34
      float2  : 4039.47
      float4  : 4030.48
      float8  : 4007.96
      float16 : 3973.85

    Double-precision compute (GFLOPS)
      double   : 265.21
      double2  : 265.09
      double4  : 264.79
      double8  : 264.05
      double16 : 263.11

    Integer compute (GIOPS)
      int   : 841.70
      int2  : 841.59
      int4  : 841.39
      int8  : 841.17
      int16 : 840.63

    Transfer bandwidth (GBPS)
      enqueueWriteBuffer         : 2.57
      enqueueReadBuffer          : 1.92
      enqueueMapBuffer(for read) : 1813.75
        memcpy from mapped ptr   : 1.92
      enqueueUnmap(after write)  : 1545.40
        memcpy to mapped ptr     : 1.92

    Kernel launch latency : 267.44 us

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[Bug 93374] [radeonsi] Tonga (Radeon R9 380) hangs on running hello world OpenCL program

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https://bugs.freedesktop.org/show_bug.cgi?id=93374

Michel Dänzer <michel@daenzer.net> changed:

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

--- Comment #5 from Michel Dänzer <michel@daenzer.net> ---
Fixed in LLVM 3.8 SVN.

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