Forums - OpenCL cl_qcom_limited_printf extension not working on GPU kernel

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OpenCL cl_qcom_limited_printf extension not working on GPU kernel
alanh
Join Date: 16 Dec 13
Posts: 2
Posted: Thu, 2014-01-02 10:11
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I cannot seem to get the cl_qcom_limited_printf to work.  Can anyone post a working example?

static const char *gKernelSource =

 

#ifdef GPU_OPENCL

"#pragma OPENCL EXTENSION cl_qcom_limited_printf : enable\n"

#endif

 

"__kernel void __polynomialExpansion(__global float * dst,"

...
 
 
E/PeakMotion-OpenCL(11491): Error in kernel: BC-src-code:1:26: error: pragma opencl extension not supported
E/PeakMotion-OpenCL(11491):  #pragma OPENCL EXTENSION cl_qcom_limited_printf : enable
E/PeakMotion-OpenCL(11491):                           ^
E/PeakMotion-OpenCL(11491): BC-src-code:2:984: error: missing terminating '"' character
 

 

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Re: OpenCL cl_qcom_limited_printf extension not working on...
alanh
Join Date: 16 Dec 13
Posts: 2
Posted: Thu, 2014-01-02 10:24
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After a little more experimentation it seems the cl_khr_* extensions are supported but all of the others cannot be enabled.

Here is the extensions string provided by the runtime:

I/PeakMotion-OpenCL(11962): Device 0 Extensions (331): cl_img_egl_image cl_khr_byte_addressable_store cl_khr_egl_event cl_khr_fp16 cl_khr_gl_sharing cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_qcom_create_buffer_from_image cl_qcom_ext_host_ptr cl_qcom_ion_host_ptr cl_qcom_limited_printf 
 
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Re: OpenCL cl_qcom_limited_printf extension not working on...
eyalhir74
Join Date: 7 Feb 13
Posts: 6
Posted: Sun, 2014-01-05 04:16
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Hi,

  I've noticed the same as well for the printf stuff.

  For some reason though, when enabling the cl_khr_local_int32_base_atomics, the kernel compiles but the results

are wrong (global atomics are fine).

 

eyal

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