OpenCL support for Intel Iris Graphics 6100 (5th Gen)?

[idata]

Hi, I'm trying to find information on OpenCL support for Intel Iris Graphics 6100 (5th Generation Intel® Core™ Processors).

According to Apple, this chipset/GPU supports OpenCL 1.2:

https://support.apple.com/en-us/HT202823 https://support.apple.com/en-us/HT202823

However, it appears that there's a problem with OpenCL implementation on Intel Iris Graphics 6100,

As judged by recent performance testing (MacWorld graphic below, 2015 model MBP):

http://www.macworld.com/article/3139597/macs/13-inch-macbook-pro-review-too-many-tradeoffs.html 13-inch MacBook Pro review: Too many tradeoffs | Macworld

There is Intel data saying that 5th Generation Intel® Core™ Processors can support up to to OpenCL 2.0:

http://www.intel.com/content/www/us/en/support/graphics-drivers/graphics-for-5th-generation-intel-processors/intel-iris-graphics-6100.html http://www.intel.com/content/www/us/en/support/graphics-drivers/graphics-for-5th-generation-intel-processors/intel-iris-graphics-6100.html

However in one implementation (Github issue), there seems to be an issue with the lack of floating point support ("cl_khr_fp64" extension):

https://github.com/cdeterman/gpuR/issues/11 https://github.com/cdeterman/gpuR/issues/11

Whether this is a deficiency in the chip, or an intervening software layer (e.g. ViennaCL), I cannot say:

http://viennacl.sourceforge.net/ http://viennacl.sourceforge.net

Any discussion or assistance appreciated!

Message was edited by: William Michels

[idata]

Hello jubilatious1:

In regard to your inquiry about the Intel® HD Graphics 6100, I just wanted to confirm that yes, they do support OpenCL 2.0, as you can confirm on the following link: http://www.intel.com/content/www/us/en/support/graphics-drivers/000005524.html http://www.intel.com/content/www/us/en/support/graphics-drivers/000005524.html Now, Apple has requested that all questions regarding Apple systems and software be addressed directly with Apple support.So, I recommend checking the links below for further troubleshooting assistance on your Apple computer: http://www.apple.com/support/imac/intel/ http://www.apple.com/support/imac/intel/ http://www.apple.com/support/mac/n http://www.apple.com/support/mac/n https://www.apple.com/support/macbook/ https://www.apple.com/support/macbook/ http://www.apple.com/support/macmini/ http://www.apple.com/support/macmini/ Any further questions, please let me know. Regards Alberto

[idata]

Thank you for your note.

However the question I posted in this forum wasn't specific to Apple products, but was a question directed towards OpenCL support on 5th Generation Intel Processors (e.g. Intel Iris Graphics 6100). Likely the same "2X"-graphic speed differential (below) is seen on ALL platforms (Linux, Windows, Apple), so it's important to understand the reason for this differential.

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Can Intel specifically answer this question: Do 5th Generation Intel Processors (e.g. Intel Iris Graphics 6100) implement floating point support ("cl_khr_fp64" extension) ????

If NO, then a) is this a software issue that INTEL CORPORATION can resolve? or b) is this a hardware ("deficient silicon") issue that cannot be resolved ????

IF the answer to the question "Do 5th Generation Intel Processors (e.g. Intel Iris Graphics 6100) implement floating point support ("cl_khr_fp64" extension)" is YES, then certainly I will inquire of Apple why processor interrogation says differently, as documented in the following Github URL: https://github.com/cdeterman/gpuR/issues/11 https://github.com/cdeterman/gpuR/issues/11

[idata]

Hello jubilatious1:

You are welcome. Thank you very much for letting us know that information. We apologize for any inconvenience, is just that when a customer has any type of inquiry in regard to Apple products, we do refer them to the sites above to get the proper support. Since you need to get assistance mainly for OpenCL, in our developer zone site you will be able to submit your inquiry, and get further peer's assitance: https://software.intel.com/en-us/forums/opencl https://software.intel.com/en-us/forums/opencl Any questions, please let me know. Regards Alberto

[idata]

Hello jubilatious1:

I just wanted to check if the information posted previously was useful for you and if you were able to get assistance in the OpenCL forums? Any questions, please let me know. Regards Alberto