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Thread: Enabling double precision

  1. #1
    Junior Member
    Join Date
    Nov 2009

    Enabling double precision

    Hi there,

    I'm trying to enable double precision through my kernels however I get an error thrown when I include the extension enabling pragma:
    #pragma OPENCL EXTENSION cl_khr_fp64 : enable

    I'm also using the C++ bindings, the error thrown is -45 during the kernel jit compilation but I have no idea what that error number actually refers to.

    Without this pragma the kernel code compiles/runs without any issues,

    What needs to be done to enable double precision?

    Thanks in advance.

  2. #2
    Junior Member
    Join Date
    Nov 2009

    Re: Enabling double precision

    Ah apologies, just realised my gfx card does not support cuda model 1.3 for double precision (using a 8800gts).

    On a related to note, is there an easy way to get meaning ful error strings from the error numbers thrown by the c++ bindings?

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