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Journeyman III

Ati stream sdk installation issues

 while installation i observed a message

"The display driver installed doesnt have Opencl support for AMD GPUs. If you continue with this installation you will still be able to run Opencl on compatible x86 cpus"

. I would like to know why did it show this warning in the first place. here is my system profile

OS- windows 7
ATI Stream- v2.1 (I thought of trying 2.0 i couldnt find an installer)
Graphics Chipset ATI Mobility Radeon HD 4500 Series (website says it supports opencl )
Driver:- ATI Catalyst™ Mobility 10.5 (the ati webiste said tested driver as 10.4 but again i couldnt find that driver and i am not sure if this can be an issue)

5 Replies
Journeyman III


Just to be sure, did you check whether your notebook fall under the unsupported notebooks category given at driver download page? 



ya i did...looks fine to me


Could you run CAL sample 'FindNumDevices' and CLInfo and post the results?



OUTPUT of FindNumDevices

Supported CAL Runtime Version: 1.3.185

Found CAL Runtime Version: 1.4.344

Use -? for help

CAL initialized.

Finding out number of devices :-

Device Count = 1

CAL shutdown successful.


Output of CLinfo

This OpenCL build requires version 1.4.467, version 1.4.344 installed.


Number of platforms:                             1

  Platform Profile:                              FULL_PROFILE

  Platform Version:                              OpenCL 1.0 ATI-Stream-v2.1 (145


  Platform Name:                                         ATI Stream

  Platform Vendor:                               Advanced Micro Devices, Inc.

  Platform Extensions:                   cl_khr_icd

  Platform Name:                                         ATI Stream

Number of devices:                               1

  Device Type:                                   CL_DEVICE_TYPE_CPU

  Device ID:                                     4098

  Max compute units:                             2

  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

  Max clock frequency:                           2200Mhz

  Address bits:                                  32

  Max memory allocation:                         536870912

  Image support:                                 No

  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:                               No

    Round to +ve and infinity:                   No

    IEEE754-2008 fused multiply-add:             No

  Cache type:                                    Read/Write

  Cache line size:                               64

  Cache size:                                    65536

  Global memory size:                            1073741824

  Constant buffer size:                          65536

  Max number of constant args:                   8

  Local memory type:                             Global

  Local memory size:                             32768

  Profiling timer resolution:                    1

  Device endianess:                              Little

  Available:                                     Yes

  Compiler available:                            Yes

  Execution capabilities:

    Execute OpenCL kernels:                      Yes

    Execute native function:                     No

  Queue properties:

    Out-of-Order:                                No

    Profiling :                                  Yes

  Platform ID:                                   00AF946C

  Name:                                          AMD Turion(tm) X2 Dual-Core Mob

ile RM-74

  Vendor:                                        AuthenticAMD

  Driver version:                                1.1

  Profile:                                       FULL_PROFILE

  Version:                                       OpenCL 1.0 ATI-Stream-v2.1 (145


  Extensions:                                    cl_khr_icd cl_amd_fp64 cl_khr_g

lobal_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32

_base_atomics cl_khr_local_int32_extended_atomics cl_khr_byte_addressable_store

cl_khr_gl_sharing cl_ext_device_fission cl_amd_device_attribute_query cl_amd_pri




Either you did not uninstall the previous driver, or there are leftovers from previous installations. 

Do a clean reinstall. CAL version should be 1.4.635 or later if you are using catalyst 10.5 drivers.