S32V234 OpenCL Full profile support?

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S32V234 OpenCL Full profile support?

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cristina_murill
Contributor I

Hi,

I am working with a S32V234 EVB2, with BSP20 and Vivante SDK from binaries_gpu_userspace_vtk_6.2.4.

After running clinfo, I can see that I am using the embedded profile.

         CL_DEVICE_PROFILE:                 EMBEDDED_PROFILE

Is the full profile supported? How to enable it?

Thank you

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2 Replies

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Bio_TICFSL
NXP TechSupport
NXP TechSupport

Hello Cristina,

The S32 and vtk6.2.4 support openCL 1.2/1.1 full profile but In short, the main differences here are in floating-point accuracy. In other words, the embedded profile need not adhere to the IEEE 754 floating-point specification, which may be a problem if you are doing lots of numerical calculations which rely on it. Quoted from the specification:

This relaxation of the requirement to adhere to IEEE 754 requirements for basic floating- point operations, though extremely undesirable, is to provide flexibility for embedded devices that have lot stricter requirements on hardware area budgets.

while desktop profiles must have a compiler available to compile OpenCL kernels, embedded profiles need not provide one. This can be seen through the clGetDeviceInfo documentation, which states:

CL_DEVICE_COMPILER_AVAILABLE: Return type: cl_bool  Is CL_FALSE if the implementation does not have a compiler available to compile the program source. Is CL_TRUE if the compiler is available. This can be CL_FALSE for the embededed  platform profile only.

Regards

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cristina_murill
Contributor I

Hi,

thank you for the information. In my case,

Platform ID: 0
     CL_PLATFORM_NAME:       Vivante OpenCL Platform
     CL_PLATFORM_PROFILE:    EMBEDDED_PROFILE
     CL_PLATFORM_VERSION:    OpenCL 1.1 V6.2.4.p2.163672
     CL_PLATFORM_VENDOR:     Vivante Corporation
     CL_PLATFORM_EXTENSIONS: cl_khr_icd
     Available devices:      1

     Device ID:      0
     Device Ptr:     0x158881e0
         CL_DEVICE_NAME: Vivante OpenCL Device GC3000.5451.0000
         CL_DEVICE_VENDOR: Vivante Corporation
         CL_DEVICE_TYPE:                 GPU
          CL_DEVICE_OPENCL_C_VERSION:             OpenCL C 1.1
         CL_DEVICE_VENDOR_ID:                 0x00564956
         CL_DEVICE_PLATFORM:                 0xb304d598
         CL_DEVICE_VERSION:                 OpenCL 1.1
         CL_DEVICE_PROFILE:                 EMBEDDED_PROFILE
         CL_DRIVER_VERSION:                 OpenCL 1.1 V6.2.4.p2.163672

CL_DEVICE_COMPILER_AVAILABLE:             Yes

As you mentioned, that vtk6.2.4 supports openCL 1.2/1.1 full profile, how can we switch to the full profile?

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