https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Static-linking-with-MKL-9-1-and-10-0-Windows/m-p/889084#M10252 I have found the issue. Including mkl_lapack.lib in the link line causes the problem. If I remove that then the mkl_p4p.DLL is not loaded. Fri, 23 Nov 2007 16:36:46 GMT AndrewC 2007-11-23T16:36:46Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Static-linking-with-MKL-9-1-and-10-0-Windows/m-p/889081#M10249 I have had to switch from dynamically linking to MKL to static linking because of a conflict between our MKL version and various versions of Matlab when our main DLL module is called from a Matlab MEX file. <BR /> <BR />My understanding ( for 9.1) is that all I (should) have to do is link against mkl_c.lib instead of mkl_c_dll.lib and then no MKL DLL's at all are then required apart from libguide40.dll. <BR /> <BR />Yet I still see mkl_p4p.dll being loaded dynamically at run-time. <BR /> <BR /> Thu, 22 Nov 2007 19:09:51 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Static-linking-with-MKL-9-1-and-10-0-Windows/m-p/889081#M10249 AndrewC 2007-11-22T19:09:51Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Static-linking-with-MKL-9-1-and-10-0-Windows/m-p/889082#M10250 <P>You are right, for switching from dynamical MKL usage to statical usage you need to link with mkl_c.lib instead of mkl_c_dll.lib. Looks strange what mkl_p4p.dll still loading. Maybe other Matlab components use this library?</P> <P>And I have question for you: how you determine what mkl_p4p.dll is loaded?</P> Fri, 23 Nov 2007 08:19:16 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Static-linking-with-MKL-9-1-and-10-0-Windows/m-p/889082#M10250 Andrey_G_Intel2 2007-11-23T08:19:16Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Static-linking-with-MKL-9-1-and-10-0-Windows/m-p/889083#M10251 So it is clear mkl_p4p.dll should not be loaded and I need to find out why. <BR /> <BR />I am running in a standalone mode (without Matlab) under the Visual C++ 2005 debugger so I can see what DLL's are loaded when. When the application performs my first matrix operation that calls perhaps a lapack routine ( not sure as it is buried way down in a class library) , I see the mkl_p4p.dll from the MKL BIN directory get loaded dynamically( MKL&#8;in is in the PATH) <BR /> <BR />My link line includes mkl_c.lib mkl_lapack.lib mkl_solver.lib Fri, 23 Nov 2007 16:33:44 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Static-linking-with-MKL-9-1-and-10-0-Windows/m-p/889083#M10251 AndrewC 2007-11-23T16:33:44Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Static-linking-with-MKL-9-1-and-10-0-Windows/m-p/889084#M10252 I have found the issue. Including mkl_lapack.lib in the link line causes the problem. If I remove that then the mkl_p4p.DLL is not loaded. Fri, 23 Nov 2007 16:36:46 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/Static-linking-with-MKL-9-1-and-10-0-Windows/m-p/889084#M10252 AndrewC 2007-11-23T16:36:46Z