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Thread: Mapped and Direct modes

  1. #1
    Junior Member
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    Mapped and Direct modes

    Hi all,
    I need to asked about the oclBandwidthtest example, please, I have some parts that I don't understand in it... First, what is the difference between Direct and Mapped modes? and where can I find explanation or more details about them?
    The second thing that when I try to apply the Pinned memory with mapped mode in a project of mine, in order to improve the data transfer time from host to device, I find that the transfer time might become better but the processing time on the GPU afterwards reduces dramatically!!!! is this normal or there is any reason for this?

  2. #2
    Junior Member
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    Re: Mapped and Direct modes

    any help? I'm sorry if my question is not clear as I am really confused and some how a OpenCL beginner...

  3. #3
    Senior Member
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    Re: Mapped and Direct modes

    You may get a response if you ask on NVidia's forums, since the test, I believe, was written by them.
    Disclaimer: Employee of Qualcomm Canada. Any opinions expressed here are personal and do not necessarily reflect the views of my employer. LinkedIn profile.

  4. #4
    Junior Member
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    Re: Mapped and Direct modes

    Thanks David but unfortunately they are not replying too

  5. #5
    Administrator khronos's Avatar
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    Re: Mapped and Direct modes

    Many of the work groups are in Barcelona right now, as such responses will be delayed this week.

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