topic Re:C# ?gesvxx memory issue in Intel® oneAPI Math Kernel Library

C# ?gesvxx memory issue

Gianluca_G_1 — Wed, 01 Jun 2022 09:34:11 GMT

Hello,
We are working in C# using MKL, just importing mkl_rt.1.dll and declaring functions in our code.
We use to work with huge linear systems with complex numbers and resolve this systems with functions like: LAPACKE_zgesvxx(..)

We have some issues when we try to resolve matrices that execede 2MB because the result is completly wrong!
(we made a simple test with a diagonal matrix with all (1,1j) in the diagonal and VTN of all 0.5 )

We saw there are two possible einterfaces: ILP64 interface uses the 64-bit integer type, while LP64 use the 32-bit integer. We know that the dll is x64 bit compiled but not sure about which interface is enabled.

We set the env variable MKL_INTERFACE_LAYER=ILP64.

Without effect.

is it possible to know if this variable is effective?

We are not C++ specialist so we would like to avoid working in C++ if possible.

Thank you for any advice you can give us.

BR
Gianluca

Re: C# ?gesvxx memory issue

ShanmukhS_Intel — Tue, 08 Nov 2022 11:10:09 GMT

Hi,

Thank you for posting on Intel Communities.

Could you please help us with your environment details, so that we could assist you further with the required information wrt. mkl_rt.1.dll.Intel MKL uses lp64 for Intel-64 architechture.

In addition, please refer to the below link which might help you regarding the usage of LP64 vs ILP64 interfaces.

https://www.intel.com/content/www/us/en/develop/documentation/onemkl-windows-developer-guide/top/linking-your-application-with-onemkl/linking-in-detail/linking-with-interface-libraries/using-the-ilp64-interface-vs-lp64-interface.html

Best Regards,

Shanmukh.SS

Re:C# ?gesvxx memory issue

ShanmukhS_Intel — Mon, 13 Jun 2022 07:02:19 GMT

Hi,

A gentle reminder:

Has the information provided helped? Could you please let us know if we could close this thread at our end.

Best Regards,

Shanmukh.SS

Re:C# ?gesvxx memory issue

ShanmukhS_Intel — Mon, 20 Jun 2022 04:48:45 GMT

Hi,

We assume that your issue is resolved. If you need any additional information, please post a new question as this thread will no longer be monitored by Intel.

Best Regards,

Shanmukh.SS