Intel IPP support for Intel(R) AVX2 - Is 'ippiMin_32f_C1R' function AVX2 optimized?

Intel IPP support for Intel(R) AVX2 - Is 'ippiMin_32f_C1R' function AVX2 optimized?

Portrait de Sergey Kostrov

My question is related to a list of IPP functions with AVX2 optimizations from an article at:
.
http://software.intel.com/en-us/articles/haswell-support-in-intel-ipp

I needed to verify if some IPP functions are AVX2 optimized and I found that one function from my list
is not listed on Intel's list. Could you verify that 'ippiMin_32f_C1R' function is AVX2 optimized?

** Image Processing **
...
ippiMax_32f_C1R   - Listed
ippiMin_32f_C1R   - NOT Listed ( Is it AVX2 optimized ?)
ippiMinMax_32f_C1R  - Listed - [EDITED] It was ippiMinMax_16s_C1R
ippiMean_32f_C1R  - Listed
...
ippiAdd_32f_C1R   - Listed
ippiSub_32f_C1R   - Listed
ippiSqrt_32f_C1R  - Listed
...

** Signal Processing **
...
ippsMax_32f   - Listed
ippsMin_32f   - Listed
ippsMinMax_32f   - Listed
ippsMean_32f   - Listed
...
ippsAdd_32f   - Listed
ippsSub_32f   - Listed
ippsSqrt_32f   - Listed
...

Thanks in advance.

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Portrait de Ying H (Intel)

Hi Sergey,

No, the function is not optimizated by AVX.
And as ippiMax function and those on list are host functions based on custmer survey data. So it got AVX code.

Best Regards,
Ying

Portrait de Sergey Kostrov

>>>>ippiMax_32f_C1R - Listed
>>>>ippiMin_32f_C1R - NOT Listed ( Is it AVX2 optimized ?)

Hi Ying, Thank you.

>>No, the function is not optimizated by AVX...

I'd like to make a new feature request: it would be nice if 'ippiMin_32f_C1R' also will be optimized. Is it possible?

I also corrected my own list:
...
ippiMinMax_16s_C1R - Listed - Actually it has to be ippiMinMax_32f_C1R
...

Portrait de Sergey Kostrov

One more question. In 'Intel IPP support for Intel(R) AVX2' article:
.
http://software.intel.com/en-us/articles/haswell-support-in-intel-ipp

there is a statement about '...Half-float (float16) accelerators...'. Where could I find more technical information about these accelerators?

Thanks in advance.

Portrait de Ying H (Intel)
Best Reply

Hi Sergey,

Regarding the AVX2 instruction details, you may search in IDZ. for example http://software.intel.com/en-us/blogs/2011/06/13/haswell-new-instruction...

Yes, it is possible. I will escalate the request to IPP developer team and will update to you if any news.

Best Regards,
Ying

Portrait de Sergey Kostrov

Thank you.

>>Regarding the AVX2 instruction details, you may search in IDZ. for example
>>http://software.intel.com/en-us/blogs/2011/06/13/haswell-new-instruction...
>>
>>Yes, it is possible. I will escalate the request to IPP developer team and will update to you if any news.

To be honest I really don't understand why 'ippiMin_32f_C1R' wasn't optimized. Please keep me informed.

Best regards,
Sergey

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