1 Reply Latest reply on Oct 18, 2017 4:16 PM by mirh

    HD 6670 opencl GPU not recognised on windws 10


      My AMD HD 6670 should support opencl 1.1 according to the specifications, but both Caps Viewer and LuxMark show

      only CPU  support for opencl, not GPU.

      I have installed catalyst 15.7.1 and AMD APP SDK 3.0 on windows 10 64bit.


      This is clinfo output:


      Number of platforms: 1

        Platform Profile: FULL_PROFILE

        Platform Version:                      OpenCL 2.0 AMD-APP (1800.8)

        Platform Name:                   AMD Accelerated Parallel Processing

        Platform Vendor:                       Advanced Micro Devices, Inc.

        Platform Extensions:                   cl_khr_icd cl_khr_d3d10_sharing cl_khr_d3d11_sharing cl_khr_dx9_media_sharing cl_amd_event_callback cl_amd_offline_devices



        Platform Name:                   AMD Accelerated Parallel Processing

      Number of devices: 1

        Device Type:                           CL_DEVICE_TYPE_CPU

        Vendor ID:                             1002h

        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:                8

        Preferred vector width double:         4

        Native vector width char:              16

        Native vector width short:             8

        Native vector width int:               4

        Native vector width long:              2

        Native vector width float:             8

        Native vector width double:            4

        Max clock frequency:                   3311Mhz

        Address bits:                          64

        Max memory allocation:                 2147483648

        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:                            32768

        Global memory size:                    8565694464

        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:                  2147483648

        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:            309

        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:                           00007FFA3446F180

        Name:                                           Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz

        Vendor:                          GenuineIntel

        Device OpenCL C version:               OpenCL C 1.2

        Driver version:                  1800.8 (sse2,avx)

        Profile:                         FULL_PROFILE

        Version:                         OpenCL 1.2 AMD-APP (1800.8)

        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_d3d10_sharing cl_khr_spir cl_khr_gl_event


      What should I do to use GPU with openCL?

      Can anyone please give me advice? Thanks.