On 26/02/2014 21:56, Anti_Tenzor wrote:
> Hi,
>
> 1. I was able to compile ocl-icd (many thanks to Vincent).
> Then I specified environment variables OCL_ICD_DEBUG=8 and
> OCL_ICD_VENDORS=/etc/OpenCL/vendors/amdocl64.icd
OCL_ICD_DEBUG is a bitmask :
OCL_ICD_DEBUG
If ocl-icd has been compiled with debug support, you can set this
environment variable to a value where each bit display some kind of
informations. Defined values are:
· 1: warnings (enabled by default if debug support is present and
OCL_ICD_DEBUG is not set)
· 2: informative messages
· 4: entering/exiting for some OpenCL functions
· 8: dump of the internal structure of loaded ICDs
If I remember, 2 allow to see where ICD are searched and which one are tried to
be loaded.
> Now when I start my application, it runs smoothly with a lot of debugging
> info. In this output there are a lot of messages "dump_platform:
> clUnknownXXX=(nil)".
> Maybe this part of log will be interesting to Vincent:
>
> ocl-icd(ocl_icd_loader_gen.c:1687): dump_platform:
> clUnknown120=0x7f84e4f89c23 [(nil)/(nil)]
> ocl-icd(ocl_icd_loader_gen.c:1688): dump_platform:
> clUnknown121=(nil) [(nil)/(nil)]
> ocl-icd(ocl_icd_loader_gen.c:1689): dump_platform:
> clUnknown122=(nil) [(nil)/(nil)]
> ocl-icd(ocl_icd_loader.c:389): _find_and_check_platforms: Supported
> extensions: cl_khr_icd cl_amd_event_callback cl_amd_offline_devices
> ocl-icd(ocl_icd_loader.c:404): _find_and_check_platforms: Extension suffix:
> AMD
> ocl-icd(ocl_icd_loader.c:408): _find_and_check_platforms: Profile:
> FULL_PROFILE
> ocl-icd(ocl_icd_loader.c:414): _find_and_check_platforms: Version: OpenCL 1.2
> AMD-APP (1124.2)
> ocl-icd(ocl_icd_loader.c:419): _find_and_check_platforms: Name: AMD
> Accelerated Parallel Processing
> ocl-icd(ocl_icd_loader.c:424): _find_and_check_platforms: Vendor: Advanced
> Micro Devices, Inc.
> ocl-icd(ocl_icd_loader.c:60): dump_vendor_icd: after looking for platforms
> 0x2863fa0={ num=-396530024, first=32644, handle=0x2864cd0, f=0x7f84e3a4f880}
>
>
> Now I'm pretty sure that ocl-icd works and that it correctly use AMD's
> implementation (at least with help of environment variables).
>
>
> 2. Now there are bad news for pocl ;-)
> When I specify OCL_ICD_VENDORS=/etc/OpenCL/vendors/pocl.icd (which points to
> existing file /usr/lib/libpocl.so.1.2.0),
> I receive an error when I query available platforms. It returns error code:
> "CL_PLATFORM_NOT_FOUND_KHR".
>
> I think this means that for some strange reason libpocl does not like ocl-icd
> (in my environment)...
> Oh! I'll try to recompile pocl now with new libOpencCL.so created by ocl-icd!
As Pekka said, I think that ocl-icd tries to load the pocl ICD but fails for
any reason.
Please, try this latter case with OCL_ICD_DEBUG set to 2 (or even 15)
and, if messages are not clear, send the output to me.
Regards,
Vincent
> BR,
> Oleg.
--
Vincent Danjean Adresse: Laboratoire LIG - Bât. INRIA Rhône-Alpes
Téléphone: +33 4 76 61 55 10 655 avenue de l'Europe
Fax: +33 4 76 61 52 52 Montbonnot Saint Martin
Email: [email protected] 38334 Saint-Ismier cedex
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