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Type: Posts; User: jjs

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    Re: Good OpenCL tutorial

    Hi waterborne,

    This doesn't help you right now, but I am working on a tutorial which will be presented at an early March conference. After the event, I'm going to post my slides and an...
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    Re: where is stored my cl_mem

    To clarify; you were correct in your assumption that "no flag" concerning the buffer location when calling clCreateBuffer will allocate space on the device.
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    Re: where is stored my cl_mem

    If I understand what you are asking, the answer is NO. If you call something like:

    clCreateBuffer(context, CL_MEM_READ_ONLY, sizeof(float) * NUM_ELEMENTS, NULL, &err)
    this will tell OpenCL that...
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    Re: Devices and command queues

    I think that these cards (like the GTX295) just show up as two devices with two separate memories. So from the perspective of the OpenCL runtime, it's no different than just chucking two physically...
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    Re: Devices and command queues

    You've got it right, I believe. Only devices for which you've created command queues and assigned some work will be used; the runtime doesn't do any sort of automatic load balancing.

    As to the...
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    Re: -O0 and -O3 speed difference

    Optimization flags for the CL compiler - the part of the runtime that actually compiles your kernel and could therefore affect kernel performance - are passed during the call to clBuildProgram(). ...
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