5 Replies Latest reply on Dec 5, 2015 1:57 PM by ekondis

    OpenCL 2.0 requirements changed in Crimson driver?

    ekondis

      Hello,

      I've been using a Linux machine (Ubuntu 14.04.3 64bit) for OpenCL experiments and research through remote access (ssh). It is equipped with 2 different vendor GPU cards (GTX-660 and R7-260X). The GTX-660 works as an OpenCL 1.2 device and the R7-260X as an OpenCL 2.0 device. However, after I upgraded to the Crimson driver (15.30) from 15.20 two issues were raised:

      1. The R7-260X GPU is not recognised as an OpenCL 2.0 device any more but rather as a 1.2 device.
      2. The CPU has disappeared from the list of valid OpenCL devices!

      The computer is based on a quite old CPU (Pentium 4 3.06GHz CPU with 2GB RAM) but as a host machine for GPU computing purpose it works ok.

       

      So, have the requirements for OpenCL 2.0 changed in any way for Crimson driver? Or is it maybe the small amount of RAM? It would be good to have an official anwer in this question.

       

      Here I provide the clinfo output for Crimson driver

      Number of platforms:                 2
        Platform Profile:                 FULL_PROFILE
        Platform Version:                 OpenCL 1.2 CUDA 7.5.23
        Platform Name:                 NVIDIA CUDA
        Platform Vendor:                 NVIDIA Corporation
        Platform Extensions:                 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts 
        Platform Profile:                 FULL_PROFILE
        Platform Version:                 OpenCL 2.0 AMD-APP (1912.5)
        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:                 NVIDIA CUDA
      Number of devices:                 1
        Device Type:                     CL_DEVICE_TYPE_GPU
        Vendor ID:                     10deh
        Max compute units:                 5
        Max work items dimensions:             3
          Max work items[0]:                 1024
          Max work items[1]:                 1024
          Max work items[2]:                 64
        Max work group size:                 1024
        Preferred vector width char:             1
        Preferred vector width short:             1
        Preferred vector width int:             1
        Preferred vector width long:             1
        Preferred vector width float:             1
        Preferred vector width double:         1
        Native vector width char:             1
        Native vector width short:             1
        Native vector width int:             1
        Native vector width long:             1
        Native vector width float:             1
        Native vector width double:             1
        Max clock frequency:                 1097Mhz
        Address bits:                     64
        Max memory allocation:             535478272
        Image support:                 Yes
        Max number of images read arguments:         256
        Max number of images write arguments:         16
        Max image 2D width:                 16384
        Max image 2D height:                 16384
        Max image 3D width:                 4096
        Max image 3D height:                 4096
        Max image 3D depth:                 4096
        Max samplers within kernel:             32
        Max size of kernel argument:             4352
        Alignment (bits) of base address:         4096
        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:                 128
        Cache size:                     81920
        Global memory size:                 2141913088
        Constant buffer size:                 65536
        Max number of constant args:             9
        Local memory type:                 Scratchpad
        Local memory size:                 49152
        Kernel Preferred work group size multiple:     32
        Error correction support:             0
        Unified memory for Host and Device:         0
        Profiling timer resolution:             1000
        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:                 Yes
          Profiling :                     Yes
        Platform ID:                     0x1051a30
        Name:                         GeForce GTX 660
        Vendor:                     NVIDIA Corporation
        Device OpenCL C version:             OpenCL C 1.2 
        Driver version:                 352.63
        Profile:                     FULL_PROFILE
        Version:                     OpenCL 1.2 CUDA
        Extensions:                     cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts  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_fp64 
      
      
      
      
        Platform Name:                 AMD Accelerated Parallel Processing
      Number of devices:                 1
        Device Type:                     CL_DEVICE_TYPE_GPU
        Vendor ID:                     1002h
        Board name:                     
        Device Topology:                 PCI[ B#4, D#0, F#0 ]
        Max compute units:                 14
        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:                 1175Mhz
        Address bits:                     64
        Max memory allocation:             1404198912
        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:             16
        Max size of kernel argument:             1024
        Alignment (bits) of base address:         2048
        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:                 2131105664
        Constant buffer size:                 65536
        Max number of constant args:             8
        Local memory type:                 Scratchpad
        Local memory size:                 32768
        Max pipe arguments:                 0
        Max pipe active reservations:             0
        Max pipe packet size:                 0
        Max global variable size:             0
        Max global variable preferred total size:     0
        Max read/write image args:             0
        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:             No
          Fine grain buffer:                 No
          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:                     0x7f7f516c4a18
        Name:                         Bonaire
        Vendor:                     Advanced Micro Devices, Inc.
        Device OpenCL C version:             OpenCL C 1.2 
        Driver version:                 1912.5 (VM)
        Profile:                     FULL_PROFILE
        Version:                     OpenCL 1.2 AMD-APP (1912.5)
        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_gl_sharing cl_ext_atomic_counters_32 cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_image2d_from_buffer cl_khr_spir cl_khr_gl_event 
      
      
      
           
      

      And here is clinfo output if I replace the libamdocl64.so and libamdocl12cl64.so files with the ones supplied from the previous driver (15.20):

      Number of platforms:                 2
        Platform Profile:                 FULL_PROFILE
        Platform Version:                 OpenCL 1.2 CUDA 7.5.23
        Platform Name:                 NVIDIA CUDA
        Platform Vendor:                 NVIDIA Corporation
        Platform Extensions:                 cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts 
        Platform Profile:                 FULL_PROFILE
        Platform Version:                 OpenCL 2.0 AMD-APP (1800.11)
        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:                 NVIDIA CUDA
      Number of devices:                 1
        Device Type:                     CL_DEVICE_TYPE_GPU
        Vendor ID:                     10deh
        Max compute units:                 5
        Max work items dimensions:             3
          Max work items[0]:                 1024
          Max work items[1]:                 1024
          Max work items[2]:                 64
        Max work group size:                 1024
        Preferred vector width char:             1
        Preferred vector width short:             1
        Preferred vector width int:             1
        Preferred vector width long:             1
        Preferred vector width float:             1
        Preferred vector width double:         1
        Native vector width char:             1
        Native vector width short:             1
        Native vector width int:             1
        Native vector width long:             1
        Native vector width float:             1
        Native vector width double:             1
        Max clock frequency:                 1097Mhz
        Address bits:                     64
        Max memory allocation:             535478272
        Image support:                 Yes
        Max number of images read arguments:         256
        Max number of images write arguments:         16
        Max image 2D width:                 16384
        Max image 2D height:                 16384
        Max image 3D width:                 4096
        Max image 3D height:                 4096
        Max image 3D depth:                 4096
        Max samplers within kernel:             32
        Max size of kernel argument:             4352
        Alignment (bits) of base address:         4096
        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:                 128
        Cache size:                     81920
        Global memory size:                 2141913088
        Constant buffer size:                 65536
        Max number of constant args:             9
        Local memory type:                 Scratchpad
        Local memory size:                 49152
        Kernel Preferred work group size multiple:     32
        Error correction support:             0
        Unified memory for Host and Device:         0
        Profiling timer resolution:             1000
        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:                 Yes
          Profiling :                     Yes
        Platform ID:                     0x2694a30
        Name:                         GeForce GTX 660
        Vendor:                     NVIDIA Corporation
        Device OpenCL C version:             OpenCL C 1.2 
        Driver version:                 352.63
        Profile:                     FULL_PROFILE
        Version:                     OpenCL 1.2 CUDA
        Extensions:                     cl_khr_byte_addressable_store cl_khr_icd cl_khr_gl_sharing cl_nv_compiler_options cl_nv_device_attribute_query cl_nv_pragma_unroll cl_nv_copy_opts  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_fp64 
      
      
      
      
        Platform Name:                 AMD Accelerated Parallel Processing
      Number of devices:                 2
        Device Type:                     CL_DEVICE_TYPE_GPU
        Vendor ID:                     1002h
        Board name:                     
        Device Topology:                 PCI[ B#4, D#0, F#0 ]
        Max compute units:                 14
        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:                 1175Mhz
        Address bits:                     64
        Max memory allocation:             1404567552
        Image support:                 Yes
        Max number of images read arguments:         128
        Max number of images write arguments:         64
        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:             16
        Max size of kernel argument:             1024
        Alignment (bits) of base address:         2048
        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:                 2130706432
        Constant buffer size:                 65536
        Max number of constant args:             8
        Local memory type:                 Scratchpad
        Local memory size:                 32768
        Max pipe arguments:                 16
        Max pipe active reservations:             16
        Max pipe packet size:                 1404567552
        Max global variable size:             1264110592
        Max global variable preferred total size:     2130706432
        Max read/write image args:             64
        Max on device events:                 1024
        Queue on device max size:             524288
        Max on device queues:                 1
        Queue on device preferred size:         262144
        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:                 Yes
          Profiling :                     Yes
        Platform ID:                     0x7f6ffde01430
        Name:                         Bonaire
        Vendor:                     Advanced Micro Devices, Inc.
        Device OpenCL C version:             OpenCL C 2.0 
        Driver version:                 1800.11 (VM)
        Profile:                     FULL_PROFILE
        Version:                     OpenCL 2.0 AMD-APP (1800.11)
        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_gl_sharing cl_khr_gl_depth_images cl_ext_atomic_counters_32 cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_image2d_from_buffer cl_khr_spir cl_khr_subgroups cl_khr_gl_event cl_khr_depth_images 
      
      
      
      
        Device Type:                     CL_DEVICE_TYPE_CPU
        Vendor ID:                     1002h
        Board name:                     
        Max compute units:                 1
        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:         2
        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:             2
        Max clock frequency:                 3066Mhz
        Address bits:                     64
        Max memory allocation:             2096975872
        Image support:                 Yes
        Max number of images read arguments:         128
        Max number of images write arguments:         64
        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:                     16384
        Global memory size:                 2096975872
        Constant buffer size:                 65536
        Max number of constant args:             8
        Local memory type:                 Global
        Local memory size:                 32768
        Max pipe arguments:                 16
        Max pipe active reservations:             16
        Max pipe packet size:                 2096975872
        Max global variable size:             1879048192
        Max global variable preferred total size:     1879048192
        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:             No
          Fine grain buffer:                 No
          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:     1
        Error correction support:             0
        Unified memory for Host and Device:         1
        Profiling timer resolution:             1
        Device endianess:                 Little
        Available:                     Yes
        Compiler available:                 Yes
        Execution capabilities:                 
          Execute OpenCL kernels:             Yes
          Execute native function:             Yes
        Queue on Host properties:                 
          Out-of-Order:                 No
          Profiling :                     Yes
        Queue on Device properties:                 
          Out-of-Order:                 No
          Profiling :                     No
        Platform ID:                     0x7f6ffde01430
        Name:                         Intel(R) Pentium(R) 4 CPU 3.06GHz
        Vendor:                     GenuineIntel
        Device OpenCL C version:             OpenCL C 1.2 
        Driver version:                 1800.11 (sse2)
        Profile:                     FULL_PROFILE
        Version:                     OpenCL 1.2 AMD-APP (1800.11)
        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_gl_sharing cl_ext_device_fission cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_spir cl_khr_gl_event 
      
      
      
      

      I intend to upgrade to a more capable AMD GPU for my research so I need to have OpenCL 2.0 support.