7 Replies Latest reply: Oct 26, 2012 1:27 AM by pbcpbt RSS

new HD7970 loses GPU Device

kbrafford Novice
Currently Being Moderated

I have a new HD7970, and after awhile the GPU device disappears from the OpenCL device list.  Here's what clinfo says when that happens:

 

Number of platforms:                             1
  Platform Profile:                              FULL_PROFILE
  Platform Version:                              OpenCL 1.2 AMD-APP (923.1)
  Platform Name:                                 AMD Accelerated Parallel Proces
sing
  Platform Vendor:                               Advanced Micro Devices, Inc.
  Platform Extensions:                           cl_khr_icd cl_amd_event_callbac
k cl_amd_offline_devices cl_khr_d3d10_sharing


  Platform Name:                                 AMD Accelerated Parallel Proces
sing
Number of devices:                               1
  Device Type:                                   CL_DEVICE_TYPE_CPU
  Device ID:                                     4098
  Board name:
  Max compute units:                             4
  Max work items dimensions:                     3
    Max work items[0]:                           1024
    Max work items[1]:                           1024
    Max work items[2]:                           1024
  Max work group size:                           1024
  Preferred vector width char:                   16
  Preferred vector width short:                  8
  Preferred vector width int:                    4
  Preferred vector width long:                   2
  Preferred vector width float:                  4
  Preferred vector width double:                 0
  Native vector width char:                      16
  Native vector width short:                     8
  Native vector width int:                       4
  Native vector width long:                      2
  Native vector width float:                     4
  Native vector width double:                    0
  Max clock frequency:                           3010Mhz
  Address bits:                                  64
  Max memory allocation:                         2147483648
  Image support:                                 Yes
  Max number of images read arguments:           128
  Max number of images write arguments:          8
  Max image 2D width:                            8192
  Max image 2D height:                           8192
  Max image 3D width:                            2048
  Max image 3D height:                           2048
  Max image 3D depth:                            2048
  Max samplers within kernel:                    16
  Max size of kernel argument:                   4096
  Alignment (bits) of base address:              1024
  Minimum alignment (bytes) for any datatype:    128
  Single precision floating point capability
    Denorms:                                     Yes
    Quiet NaNs:                                  Yes
    Round to nearest even:                       Yes
    Round to zero:                               Yes
    Round to +ve and infinity:                   Yes
    IEEE754-2008 fused multiply-add:             Yes
  Cache type:                                    Read/Write
  Cache line size:                               64
  Cache size:                                    65536
  Global memory size:                            8581414912
  Constant buffer size:                          65536
  Max number of constant args:                   8
  Local memory type:                             Global
  Local memory size:                             32768
  Kernel Preferred work group size multiple:     1
  Error correction support:                      0
  Unified memory for Host and Device:            1
  Profiling timer resolution:                    340
  Device endianess:                              Little
  Available:                                     Yes
  Compiler available:                            Yes
  Execution capabilities:
    Execute OpenCL kernels:                      Yes
    Execute native function:                     Yes
  Queue properties:
    Out-of-Order:                                No
    Profiling :                                  Yes
  Platform ID:                                   000007FED9012A08
  Name:                                          AMD Phenom(tm) II X4 940 Proces
sor
  Vendor:                                        AuthenticAMD
  Device OpenCL C version:                       OpenCL C 1.2
  Driver version:                                2.0 (sse2)
  Profile:                                       FULL_PROFILE
  Version:                                       OpenCL 1.2 AMD-APP (923.1)
  Extensions:                                    cl_khr_fp64 cl_amd_fp64 cl_khr_
global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int3
2_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_
khr_int64_extended_atomics cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ex
t_device_fission cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_
media_ops cl_amd_popcnt cl_khr_d3d10_sharing

 

It doesn't do this upon a fresh reboot.  It's only after some amount of time that at some point, the GPU is just gone. 

 

Also (maybe related?) the machine now sometimes doesn't let me wake it back up after it has turned off the monitors.  I have found that with the new Radeon drivers for the new card that I have to disable the "turn off monitors" in the Power settings for the computer to keep working when I leave it alone for a few hours.

 

Any idea what's going on?

 

--Keith Brafford

  • Re: new HD7970 loses GPU Device
    pbcpbt Newbie
    Currently Being Moderated

    I have similar problem with two HD 7970.

    Normally clinfo shows only CPU and one of the cards.

     

    When I issue:

         export COMPUTE=:0

    it shows all three  OpenCL devices - CPU and both GPUs.

    • Re: new HD7970 loses GPU Device
      ED1980 Newbie
      Currently Being Moderated

      pbcpbt wrote:

       

      I have similar problem with two HD 7970.

      Normally clinfo shows only CPU and one of the cards.

       

      When I issue:

           export COMPUTE=:0

      it shows all three  OpenCL devices - CPU and both GPUs.

      Add the "export COMPUTE =: 0" in the file / etc / environment and all of OpenCL devices will be continuously visible in the system (only in my HD7970 connected to a monitor, a second HD6950 ... )

      • Re: new HD7970 loses GPU Device
        kbrafford Novice
        Currently Being Moderated

        What's the windows syntax for that setting?

        • Re: new HD7970 loses GPU Device
          ED1980 Newbie
          Currently Being Moderated

          kbrafford wrote:

           

          What's the windows syntax for that setting?

          I have a basic HD7970 (connected to a monitor), and 6950 second (that does not support AMD Zero Core, it can not completely shut down), I do not have a problem in windows, and only needed for Linux to set variables to initialize a second video card ...

           

          It is interesting to ask in AMD, as the 7000-series output from the disconnected state if it is not connected to the monitor?

  • Re: new HD7970 loses GPU Device
    ED1980 Newbie
    Currently Being Moderated

    kbrafford wrote:

     

    I have a new HD7970, and after awhile the GPU device disappears from the OpenCL device list.  Here's what clinfo says when that happens:

     

    Number of platforms:                             1
      Platform Profile:                              FULL_PROFILE
      Platform Version:                              OpenCL 1.2 AMD-APP (923.1)
      Platform Name:                                 AMD Accelerated Parallel Proces
    sing
      Platform Vendor:                               Advanced Micro Devices, Inc.
      Platform Extensions:                           cl_khr_icd cl_amd_event_callbac
    k cl_amd_offline_devices cl_khr_d3d10_sharing
    
    
      Platform Name:                                 AMD Accelerated Parallel Proces
    sing
    Number of devices:                               1
      Device Type:                                   CL_DEVICE_TYPE_CPU
      Device ID:                                     4098
      Board name:
      Max compute units:                             4
      Max work items dimensions:                     3
        Max work items[0]:                           1024
        Max work items[1]:                           1024
        Max work items[2]:                           1024
      Max work group size:                           1024
      Preferred vector width char:                   16
      Preferred vector width short:                  8
      Preferred vector width int:                    4
      Preferred vector width long:                   2
      Preferred vector width float:                  4
      Preferred vector width double:                 0
      Native vector width char:                      16
      Native vector width short:                     8
      Native vector width int:                       4
      Native vector width long:                      2
      Native vector width float:                     4
      Native vector width double:                    0
      Max clock frequency:                           3010Mhz
      Address bits:                                  64
      Max memory allocation:                         2147483648
      Image support:                                 Yes
      Max number of images read arguments:           128
      Max number of images write arguments:          8
      Max image 2D width:                            8192
      Max image 2D height:                           8192
      Max image 3D width:                            2048
      Max image 3D height:                           2048
      Max image 3D depth:                            2048
      Max samplers within kernel:                    16
      Max size of kernel argument:                   4096
      Alignment (bits) of base address:              1024
      Minimum alignment (bytes) for any datatype:    128
      Single precision floating point capability
        Denorms:                                     Yes
        Quiet NaNs:                                  Yes
        Round to nearest even:                       Yes
        Round to zero:                               Yes
        Round to +ve and infinity:                   Yes
        IEEE754-2008 fused multiply-add:             Yes
      Cache type:                                    Read/Write
      Cache line size:                               64
      Cache size:                                    65536
      Global memory size:                            8581414912
      Constant buffer size:                          65536
      Max number of constant args:                   8
      Local memory type:                             Global
      Local memory size:                             32768
      Kernel Preferred work group size multiple:     1
      Error correction support:                      0
      Unified memory for Host and Device:            1
      Profiling timer resolution:                    340
      Device endianess:                              Little
      Available:                                     Yes
      Compiler available:                            Yes
      Execution capabilities:
        Execute OpenCL kernels:                      Yes
        Execute native function:                     Yes
      Queue properties:
        Out-of-Order:                                No
        Profiling :                                  Yes
      Platform ID:                                   000007FED9012A08
      Name:                                          AMD Phenom(tm) II X4 940 Proces
    sor
      Vendor:                                        AuthenticAMD
      Device OpenCL C version:                       OpenCL C 1.2
      Driver version:                                2.0 (sse2)
      Profile:                                       FULL_PROFILE
      Version:                                       OpenCL 1.2 AMD-APP (923.1)
      Extensions:                                    cl_khr_fp64 cl_amd_fp64 cl_khr_
    global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int3
    2_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_
    khr_int64_extended_atomics cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ex
    t_device_fission cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_
    media_ops cl_amd_popcnt cl_khr_d3d10_sharing
    

     

    It doesn't do this upon a fresh reboot.  It's only after some amount of time that at some point, the GPU is just gone.

     

    Also (maybe related?) the machine now sometimes doesn't let me wake it back up after it has turned off the monitors.  I have found that with the new Radeon drivers for the new card that I have to disable the "turn off monitors" in the Power settings for the computer to keep working when I leave it alone for a few hours.

     

    Any idea what's going on?

     

    --Keith Brafford

    I think it works Technology AMD Zero Core, breaking graphics card when idle

  • Re: new HD7970 loses GPU Device
    kbrafford Novice
    Currently Being Moderated

    Ok, I rebooted again, and now I have no GPU context at all, even from the beginning of a session.

     

    What gives?  How do I fix my setup?

     

    --Keith Brafford

  • Re: new HD7970 loses GPU Device
    pbcpbt Newbie
    Currently Being Moderated

    Same problem again with two HD 7970.

    clinfo shows only CPU and one of the cards.

     

    When I issue:

         export COMPUTE=:0

     

    NOTHING CHANGES!

    file etc/environment has that line as well...

     

    This time it's Ubuntu 12.04

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