Intel® Integrated Performance Primitives
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Copy Functions provided by IPP

Shankar1
Beginner
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I have been using copy functions(the one which takes strided data and the other which takes non strided data) provided in IPP for copying complex arrays. Do these functions usenon-temporal movntq instructions to copy ? Because I think movntq instruction evicts the output data from the cache and this means that the following operation that I do with the output data after the copy has to reload the data into the cache.
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Vladimir_Dudnik
Employee
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Could you please specify which exactly functions you are tried, what is IPP version and what is your target platform?

Note, usually, IPP functions do not use non-temporal move instruction but there is a special function, ippiCopyManaged, where you can control on this behaviour. Please refer to documentation of this function.

Regards,
Vladimir
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