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wrong results running OpenCl Helloworld sample (AMD SDK)

Question asked by evoliptic on May 27, 2015
Latest reply on May 28, 2015 by dipak

hello everybody,
as a completely newcomer to OpenCl and such, i wanted to try to run some samples before getting into source. So basically, here is the result of the execution of the helloworld sample from the samples we get when we have extracted the auto installer :

the execution of the helloworld sample

input string:

GdkknVnqkc

 

output string:

`�B

Passed!

 

In fact, i get completely random characters as output.

 

However, i think my installation is correct :

here is my os (command uname + cat /etc/os-release):

Linux x86_64 GNU/Linux | openSUSE 13.1 | kernel: 3.11.10-29-desktop

 

here is the result of clinfo command (sorry i did not find anything to include a personnal txt file)

clinfo command
Number of platforms:    1
  Platform Profile:    FULL_PROFILE
  Platform Version:    OpenCL 2.0 AMD-APP (1642.5)
  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:    AMD Accelerated Parallel Processing
Number of devices:    2
  Device Type:    CL_DEVICE_TYPE_GPU
  Vendor ID:    1002h
  Board name: 
  Device Topology:    PCI[ B#2, D#0, F#0 ]
  Max compute units:    44
  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:    930Mhz
  Address bits:    64
  Max memory allocation:    4244635648
  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:    16978542592
  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:    4244635648
  Max global variable size:    3820172032

  Max global variable preferred total size:     16978542592

  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:    16384
  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:    0x7f543f7c9fd0
  Name:    Hawaii
  Vendor:    Advanced Micro Devices, Inc.
  Device OpenCL C version:    OpenCL C 2.0
  Driver version:    1642.5 (VM)
  Profile:    FULL_PROFILE
  Version:    OpenCL 2.0 AMD-APP (1642.5)
  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_subgroups cl_khr_gl_event cl_khr_depth_images

 

 

  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:    3699Mhz
  Address bits:    64
  Max memory allocation:    33841593344
  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:    135366373376
  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:    3776822272
  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:    Yes
Fine grain buffer:    Yes
Fine grain system:    Yes
Atomics:    Yes
  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:    0x7f543f7c9fd0
  Name:    Intel(R) Xeon(R) CPU E5-1630 v3 @ 3.70GHz
  Vendor:    GenuineIntel
  Device OpenCL C version:    OpenCL C 1.2
  Driver version:    1642.5 (sse2,avx)
  Profile:    FULL_PROFILE
  Version:    OpenCL 1.2 AMD-APP (1642.5)
  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_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

 

Any idea from what it could come?

 

thanks in advance,

Outcomes