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OpenCL and Macbook Pro 15 Zoll, Mitte 2012

Comments

6 comments

  • Christian Gruner
    The 650M is basically too slow for CO. Compared to the normal CPU in a mid 2012 mbp, the GPU would actually be slower.

    We primarily disable the slow GPU due to stability and performance. Slow cards needs compromises in the code, that in-turn can cause stability-issues along with performance issues on faster cards.
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  • TAOGde
    [quote="Christian Gruner" wrote:
    The 650M is basically too slow for CO. Compared to the normal CPU in a mid 2012 mbp, the GPU would actually be slower.

    We primarily disable the slow GPU due to stability and performance. Slow cards needs compromises in the code, that in-turn can cause stability-issues along with performance issues on faster cards.


    Well, when i see it right my Nvidia is faster than my I7 CPU

    GeForce GT 650M, VW 1
    4096 x 4096 pixel in 462.39 ms
    36.28 megapixel per second
    152.39 GFLOPS

    Intel(R) Core(TM) i7-3615QM CPU @ 2.30GHz, VW 1
    4096 x 4096 pixel in 4587.50 ms
    3.66 megapixel per second
    15.36 GFLOPS


    or i am wrong?
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  • TAOGde
    Well, with version 7.2.3 i got the following console message
    2014-07-28 18:08:08> Logging is now active.
    2014-07-28 18:08:08> OpenCL initialization...
    2014-07-28 18:08:08> OpenCL : found platform Apple, OpenCL Version : OpenCL 1.2 (Jun 3 2014 12:43:41)
    2014-07-28 18:08:08> OpenCL Device : HD Graphics 4000
    2014-07-28 18:08:08> OpenCL Driver Version : 1.2(Jun 9 2014 13:24:09)
    2014-07-28 18:08:08> OpenCL Compute Units : 16
    2014-07-28 18:08:08> OpenCL : Building kernels
    2014-07-28 18:09:21> OpenCL : Benchmarking
    2014-07-28 18:09:23> OpenCL : Initialization completed
    2014-07-28 18:09:23> OpenCL benchMark : 2.777920
    2014-07-28 18:09:23> OpenCL Device : GeForce GT 650M
    2014-07-28 18:09:23> OpenCL Driver Version : 8.26.26 310.40.45f01
    2014-07-28 18:09:23> OpenCL Compute Units : 2


    so, it look slike that my GFX card is not too slow to working with OpenCL 😉

    I test it out.
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  • nggalai
    TAO, what specific MBP do you use? There were models with both 512 MB vram and 1 GB vram back in 2012. Capture One only runs properly with 1 GB vram or more, so the “automatic†setting in 7.2.2 disabled OpenCL when this is not met. With C1 7.2.3 though there’s a bug where this startup checking of requirements isn’t made, resulting in potential crashes while in use as well as processing errors in final JPEG/TIFF files.

    Cheers,
    -Sascha
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  • TAOGde
    [quote="nggalai" wrote:
    TAO, what specific MBP do you use? There were models with both 512 MB vram and 1 GB vram back in 2012. Capture One only runs properly with 1 GB vram or more, so the “automatic†setting in 7.2.2 disabled OpenCL when this is not met. With C1 7.2.3 though there’s a bug where this startup checking of requirements isn’t made, resulting in potential crashes while in use as well as processing errors in final JPEG/TIFF files.

    Cheers,
    -Sascha

    I have The 512mb Version. At The Moment i have no Problems with crashes.
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  • nggalai
    [quote="TAOGde" wrote:

    I have The 512mb Version. At The Moment i have no Problems with crashes.

    It depends a lot on circumstances: file size, resolution, number of images, steps made while developing them, layers / local adjustments, how often you restart C1 during work on a session, do you use the loupe, and so on. As it’s not very predictable OpenCL has been disabled on “automatic†for a long time with little video memory (what you observed with 7.2.2), with 7.2.3 this startup check was removed (by accident? bug?).

    But as long as it works for you, enjoy! 😊

    Cheers,
    -Sascha
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