Any problems with MKL 10.2 Update 5 and Core(TM) i7?

[AndrewC]

We have a user with a new laptop with the following CPU.

Intel Core i7-2820QM CPU @ 2.30GHz

He is having some problems which appear identical to a problem(*) we have before with VML misidentifying the CPU and causing an exception.

Any known issues with the Core i7 and MKL 10.2????


(*) this was a premier support issue with a Intel Core2 Duo CPU U7300.

[Gennady_F_Intel]

Andrew, we had some problems some time ago. See this thread here. This problem has beenfixed in the version 10.2 Update 5.

--Gennady

[AndrewC]

Unfortunately the version of MKL that is causing the problem is as below.....

MKL Version:Intel Math Kernel Library Version 10.2.6 Product Build 20100728 for Intel 64 architecture applications

If I update the user to MKL 10.3.4 the problem goes away.

[Gennady_F_Intel]

in that case there are no idea what the cause of this problem is. Is it possible to give us the example of the code to check it on our side?

[AndrewC]

Can you loan me a new Core i7 laptop?

Seriously, though, this problem shows the identical symptoms to that I found in an earlier 10.2 release with the other Core 2 Duo version. It was VDSQRT() from memory. And the explanation was MKL vectoring to the wrong code as the CPU was misidentified.