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OpenCL on Vega 56 - Few Issues Remaining

Question asked by tbernath on Nov 27, 2017
Latest reply on Nov 30, 2017 by dipak

I installed a new CentOS 6.9 and updated the PCI-IDs so that the card is recognized.  I downloaded the latest AMDAPPSDK 3.0, and was able to build and run most of the examples.


However, the OpenCL 2.0 are failing, saying that the card does not support OpenCL 2.0.  I'm attaching the clinfo that shows it SAYS it is OpenCL 2.0 Profile, and OpenCL 1.2 Device.


Also, in the 2.0 examples, there are three programs that refuse to load because of the '#include "atomic"', which I suspect is related to the gcc being pre-5.0.

[root@localhost 2.0]# gcc --version

gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18)


I downloaded the latest CodeXL, and it doesnt recognize the card. Trying to run Profile on GPU for the example, says to reference the Project Settings, where it says

'GPU Performance Counters are available only for AMD devices with a Catalyst driver installed.'


clinfo output:

[root@localhost 2.0]# clinfo

Number of platforms:                 1

  Platform Profile:                 FULL_PROFILE

  Platform Version:                 OpenCL 2.0 AMD-APP (2482.3)

  Platform Name:                 AMD Accelerated Parallel Processing

  Platform Vendor:                 Advanced Micro Devices, Inc.

  Platform Extensions:                 cl_khr_icd cl_amd_event_callback cl_amd_offline_devices



  Platform Name:                 AMD Accelerated Parallel Processing

Number of devices:                 1

  Device Type:                     CL_DEVICE_TYPE_GPU

  Vendor ID:                     1002h

  Board name:                     Vega 10 XT [Radeon RX Vega 64]

  Device Topology:                 PCI[ B#3, D#0, F#0 ]

  Max compute units:                 56

  Max work items dimensions:             3

    Max work items[0]:                 256

    Max work items[1]:                 256

    Max work items[2]:                 256

  Max work group size:                 256

  Preferred vector width char:             4

  Preferred vector width short:             2

  Preferred vector width int:             1

  Preferred vector width long:             1

  Preferred vector width float:             1

  Preferred vector width double:         1

  Native vector width char:             4

  Native vector width short:             2

  Native vector width int:             1

  Native vector width long:             1

  Native vector width float:             1

  Native vector width double:             1

  Max clock frequency:                 1590Mhz

  Address bits:                     64

  Max memory allocation:             7287183769

  Image support:                 Yes

  Max number of images read arguments:         128

  Max number of images write arguments:         8

  Max image 2D width:                 16384

  Max image 2D height:                 16384

  Max image 3D width:                 2048

  Max image 3D height:                 2048

  Max image 3D depth:                 2048

  Max samplers within kernel:             26751

  Max size of kernel argument:             1024

  Alignment (bits) of base address:         1024

  Minimum alignment (bytes) for any datatype:     128

  Single precision floating point capability

    Denorms:                     No

    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:                     16384

  Global memory size:                 8573157376

  Constant buffer size:                 7287183769

  Max number of constant args:             8

  Local memory type:                 Scratchpad

  Local memory size:                 65536

  Max pipe arguments:                 0

  Max pipe active reservations:             0

  Max pipe packet size:                 0

  Max global variable size:             7287183769

  Max global variable preferred total size:     8573157376

  Max read/write image args:             64

  Max on device events:                 0

  Queue on device max size:             0

  Max on device queues:                 0

  Queue on device preferred size:         0

  SVM capabilities:                

    Coarse grain buffer:             Yes

    Fine grain buffer:                 Yes

    Fine grain system:                 No

    Atomics:                     No

  Preferred platform atomic alignment:         0

  Preferred global atomic alignment:         0

  Preferred local atomic alignment:         0

  Kernel Preferred work group size multiple:     64

  Error correction support:             0

  Unified memory for Host and Device:         0

  Profiling timer resolution:             1

  Device endianess:                 Little

  Available:                     Yes

  Compiler available:                 Yes

  Execution capabilities:                

    Execute OpenCL kernels:             Yes

    Execute native function:             No

  Queue on Host properties:                

    Out-of-Order:                 No

    Profiling :                     Yes

  Queue on Device properties:                

    Out-of-Order:                 No

    Profiling :                     No

  Platform ID:                     0x7f555c8ad3f8

  Name:                         gfx900

  Vendor:                     Advanced Micro Devices, Inc.

  Device OpenCL C version:             OpenCL C 1.2

  Driver version:                 1.1 (HSA,HSAIL)

  Profile:                     FULL_PROFILE

  Version:                     OpenCL 1.2

  Extensions:                     cl_khr_fp64 cl_amd_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_fp16 cl_khr_gl_sharing cl_amd_media_ops cl_amd_media_ops2 cl_khr_subgroups cl_khr_depth_images cl_amd_liquid_flash cl_amd_copy_buffer_p2p




So, trying to get a working OpenCL environment, and happy to purge and reformat if there is another release or packages that need to be installed.  Open to all suggestions .