topic Possible issue for multiple static linking in Intel® oneAPI Math Kernel Library

Possible issue for multiple static linking

Rich_Lee — Fri, 24 Aug 2012 20:23:03 GMT

Hi Forum:

I am wondering if anyone experience issue with a program with multiple DLLs, each is statically linked with MKL?

--Rich Lee

KLA-Tencor

Possible issue for multiple static linking

TimP — Sat, 25 Aug 2012 12:16:11 GMT

If you have multiple links against static OpenMP library, you can expect difficulty. You should see the run-time error about multiple instances of OpenMP. Defaults are set such that this shouldn't happen by accident.
Static linking would inflate the size of the .dll and might lead to run-time issues with MKL load time or memory consumption.

Possible issue for multiple static linking

Christos_Amarandos — Tue, 28 Aug 2012 03:13:27 GMT

Is their the possiblity of adding API for Static Linkingg

Possible issue for multiple static linking

Rich_Lee — Tue, 28 Aug 2012 19:08:50 GMT

we were using sequential version. Namely,

For both A.dll and B.dll we statically linked with

mkl_intel_c.lib

mkl_sequential.lib

mkl_core.lib

Then in our application, we first use A.dll to perform some mkl operations. Later we use B.dll to use mkl functionality again.

In some cases, in using B.dll, we get a dll initialization exception. restarting application (without using the part that will load A.dll) resolved the problem. That makes me thinking there are some MKL initialization which can only be executed once in the same application.

I resolved it by making both A.dll and B.dll using SDL (mkl_rt.dll).