[PyOpenCL] Passing Python int to kernels

[Ian Johnson]

You can simply do

prg.myKernel(queue, ... numpy.int32(some_int))


On Thu, Jun 9, 2011 at 4:35 PM, Geordan Rosario <geordan at gmail.com> wrote:

>  Hi,
>
> How do I pass a Python int to a kernel?  The docs refer to
> set_scalar_arg_dtypes but it's not exactly clear as to how it should be
> done.  I've tried this:
>
>   prg = cl.Program(ctx, program_str).build()
>   prg.myKernel.set_scalar_arg_dtypes([None, None, numpy.int32])
>   prg.myKernel(queue, n_globals, None, some_buf, another_buf, some_int)
>
> But I get the error:
>
>   pyopencl.LogicError: when processing argument #3 (1-based):
> Kernel.set_arg failed: invalid value - invalid kernel argument
>
> What is the correct way to do this?  (Other than creating a 1-length
> buffer.)
>
> Thanks,
> -geordan
>
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>


-- 
Ian Johnson
http://enja.org
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