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Type: Posts; User: mitchde

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  1. Replies
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    Re: Apple OpenCL_OceanWave Demo crashes

    I will report that bug with the Bug Reporter to Apple today. THANKS
  2. Replies
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    2,681

    Apple OpenCL_OceanWave Demo crashes

    OpenCL_OceanWave didnt run on my Mac system - crashes in fft section at some OpenCL call.
    http://developer.apple.com/mac/library/samplecode/OpenCL_OceanWave/index.html
    (Maybe you must register to...
  3. Re: Abysmal performance on HD4870 / Snow Leopard.. why?

    I get around 8 sec with my 8800GTX, Mac OS X 10.6.2, C2D 3.0 GHz

    Editing source clFinish() to //clFinish() doesnt give any changes in time !
  4. Re: CL_DEVICE_IMAGE_SUPPORT with ATI cards on Snow Leo 10.6.2

    http://forums.amd.com/forum/messageview ... did=119151

    Seems to be a problem. Maybe fixed / implemented later or implemented with bug.

    I would ask ATI (link above to the forum with that image...
  5. Re: very weird problem with ADC examples on Snow Leopard 16,1

    With the commandline demos , which run in an terminal , you must first change the directory to the folder of that demo !
    Without that, the command line app cant find any file , no kernel file, no...
  6. Re: Time of clReleaseMemObject : strange behaviour

    Can you post the source (host + client) for testing the times on my OS X / GT 9600 ?
  7. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    I got informations from ATI OpenCL OS X dev division (AMD Inc) that they aware of some major problems with ATI 48xx running OpenCL in 10.6.
    They will fix that , so it may be possible to get that...
  8. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Here some collected Mac OS X OpenCL Benchresults of the apps i told you:
    http://www.barefeats.com/opencl.html
  9. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Yes, that are excat that i could get compiled & run QJULIA & GALAXY & GRASS - at least on NVIDIA gpus.
    My screenshoot above showing QJULIA (Raytraycing qJuila).

    ATI Mac users (4850 / 4870) get...
  10. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    "All and all, a benchmark that looks at array addition is pretty weak. You are mostly just benchmarking memory bandwidth. Even if you have all the data you need in some equivalent of a L1 cache, its...
  11. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    I now tried an orig. Apple OpenCL Demo .

    There is an OpenCL + OpenGL (GLUT) togehter, when you mean that.

    Looks like :
    CPU ...
  12. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Yes indeed, the Example, i modded to an "bench" is running well and valid at least on Nvidia GPUs / Mac OS X Snow Leopard 10.6.

    Here some resullts i got posted:

    NEW V025 test results !

    ATIs...
  13. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Upps.
    I have seen that AMD itself uses float or float2 , not float4.
    i now will remove that loop and go back to very basic gpu source code for first steps in OpenCL :)

    ...
  14. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Thanks !

    I now will try the float4 insted of float:

    /*const char * sProgramSource =
    "__kernel void vectorAdd( \n" \
    "__global const float * a, \n" \
    "__global const...
  15. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Examples of errors (OpenCL example1)
    compute_sumints.c

    #include <stdio.h>
    #include <stdlib.h>
    #include <math.h>
    #include <string.h>
    #include <stdbool.h>
    #include <sys/types.h>
    #include...
  16. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    I changed some code of the source part (smaller loop for the vector adds).
    Much error handling added.
    Works now on ATI 4870 /OS X 10.6), but runs way slower.
    ATI 4870 : 4 sec, Geforce 285 : 0,17...
  17. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    THANKS.
    I will look on it.

    I got hat example to run with that

    const char * sProgramSource =
    "__kernel void vectorAdd( \n" \
    "__global const float * a, \n" \...
  18. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Sorry,
    i tried to compile both OpenCL .c examples with Xode (10.6, as command line projects).
    Both cant be compiled.
    Different errors - some definition errors (CL... not declared), some compile...
  19. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Thanks !



    How about an thing like that (raytracing on GPU, with sample source code buts CUDA).

    http://cg.alexandra.dk/2009/08/10/trier ... -tutorial/
  20. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Anyone other has an OpenCL Example (with Xcode project file) for me ?
    Didnt get an answer from above (perhaps he is in holidays ;) )
    Thanks
  21. Re: OpenCL Addition Example (Mac OS X 10.6 Snow *Leopard)

    Thanks - nice to see some Mac OS X 10.6 devs here !
    I pm Úd you for some little demo sources.
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