https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/C-Nonlinear-Optimization-Problem-Solvers/m-p/965547#M16197 <P>Hi Ying,</P> <P>thank you for your answer.</P> <P>MKL Version 11.1 Update 2. An example script which crashes reproducible I cannot provide at the moment. Once I have one I will provide it.</P> <P>An other idea: Is it possible to redefine MKL memory function from C#. So that i_malloc is Marshal<SPAN xmlns="">.</SPAN>AllocHGlobal Method? I think that dtrnlsp_solve (that one which crashes) allocates memory internally to compute the updated values of&nbsp;x.</P> <P>Regards</P> <P>Michael</P> Tue, 01 Apr 2014 15:49:58 GMT Michael_W_1 2014-04-01T15:49:58Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/C-Nonlinear-Optimization-Problem-Solvers/m-p/965545#M16195 <P>Hi,</P> <P>I'm using Intel MKL from C#. In General it works. I want to use the Nonlinear Optimization Problem Solvers and I've translated the example, see <A href="http://software.intel.com/en-us/node/471540">http://software.intel.com/en-us/node/471540</A>. But the dtrnlsp_solve gives me sometimes a memory exception (attempt to read write protected memory).&nbsp; I've attached all the dllimports, see below.</P> <P><FONT size="2">[</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">DllImport</FONT></FONT><FONT size="2">(</FONT><FONT color="#a31515" size="2"><FONT color="#a31515" size="2">"mkl"</FONT></FONT><FONT size="2">, CallingConvention = </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">CallingConvention</FONT></FONT><FONT size="2">.Cdecl, ExactSpelling = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">true</FONT></FONT><FONT size="2">, SetLastError = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">false</FONT></FONT><FONT size="2">)]</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">internal</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">static</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">extern</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> dtrnlsp_init(</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> handle, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> n, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> m, </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> x, [</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">In</FONT></FONT><FONT size="2">] </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">double</FONT></FONT><FONT size="2">[] eps, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> iter1, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> iter2, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">double</FONT></FONT><FONT size="2"> rs);</FONT></P> <P><FONT size="2">[</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">DllImport</FONT></FONT><FONT size="2">(</FONT><FONT color="#a31515" size="2"><FONT color="#a31515" size="2">"mkl"</FONT></FONT><FONT size="2">, CallingConvention = </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">CallingConvention</FONT></FONT><FONT size="2">.Cdecl, ExactSpelling = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">true</FONT></FONT><FONT size="2">, SetLastError = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">false</FONT></FONT><FONT size="2">)]</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">internal</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">static</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">extern</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> dtrnlsp_check(</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> handle, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> n, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> m, </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> fjac, </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> fvec, [</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">In</FONT></FONT><FONT size="2">] </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">double</FONT></FONT><FONT size="2">[] eps, [</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">In</FONT></FONT><FONT size="2">, </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">Out</FONT></FONT><FONT size="2">] </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2">[] info);</FONT></P> <P><FONT size="2">[</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">DllImport</FONT></FONT><FONT size="2">(</FONT><FONT color="#a31515" size="2"><FONT color="#a31515" size="2">"mkl"</FONT></FONT><FONT size="2">, CallingConvention = </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">CallingConvention</FONT></FONT><FONT size="2">.Cdecl, ExactSpelling = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">true</FONT></FONT><FONT size="2">, SetLastError = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">false</FONT></FONT><FONT size="2">)]</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">internal</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">static</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">extern</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> dtrnlsp_solve(</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> handle, [</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">In</FONT></FONT><FONT size="2">, </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">Out</FONT></FONT><FONT size="2">] </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> fvec, [</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">In</FONT></FONT><FONT size="2">] </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> fjac, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> RCI_Request);</FONT></P> <P><FONT size="2">[</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">DllImport</FONT></FONT><FONT size="2">(</FONT><FONT color="#a31515" size="2"><FONT color="#a31515" size="2">"mkl"</FONT></FONT><FONT size="2">, CallingConvention = </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">CallingConvention</FONT></FONT><FONT size="2">.Cdecl, ExactSpelling = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">true</FONT></FONT><FONT size="2">, SetLastError = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">false</FONT></FONT><FONT size="2">)]</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">internal</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">static</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">extern</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> dtrnlsp_get(</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> handle, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> iter, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> st_cr, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">double</FONT></FONT><FONT size="2"> r1, </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">double</FONT></FONT><FONT size="2"> r2);</FONT></P> <P><FONT size="2">[</FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">DllImport</FONT></FONT><FONT size="2">(</FONT><FONT color="#a31515" size="2"><FONT color="#a31515" size="2">"mkl"</FONT></FONT><FONT size="2">, CallingConvention = </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">CallingConvention</FONT></FONT><FONT size="2">.Cdecl, ExactSpelling = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">true</FONT></FONT><FONT size="2">, SetLastError = </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">false</FONT></FONT><FONT size="2">)]</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">internal</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">static</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">extern</FONT></FONT><FONT size="2"> </FONT><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">int</FONT></FONT><FONT size="2"> dtrnlsp_delete(</FONT></P> <P><FONT color="#0000ff" size="2"><FONT color="#0000ff" size="2">ref</FONT></FONT><FONT size="2"> </FONT><FONT color="#2b91af" size="2"><FONT color="#2b91af" size="2">IntPtr</FONT></FONT><FONT size="2"> handle);</FONT></P> <P>Regards Michael</P> <P>&nbsp;</P> Mon, 31 Mar 2014 11:49:32 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/C-Nonlinear-Optimization-Problem-Solvers/m-p/965545#M16195 Michael_W_1 2014-03-31T11:49:32Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/C-Nonlinear-Optimization-Problem-Solvers/m-p/965546#M16196 <P>Hi Michael W,</P> <P>The import code looks no problem. What of MKL version are you using? Could you please attach the whole cs file, so we can test?</P> <P>Here&nbsp;are some C# example we had &nbsp;, <A href="http://software.intel.com/en-us/articles/using-intel-mkl-in-your-c-program/">http://software.intel.com/en-us/articles/using-intel-mkl-in-your-c-program/</A></P> <P>Best Regards,</P> <P>Ying</P> Tue, 01 Apr 2014 08:42:47 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/C-Nonlinear-Optimization-Problem-Solvers/m-p/965546#M16196 Ying_H_Intel 2014-04-01T08:42:47Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/C-Nonlinear-Optimization-Problem-Solvers/m-p/965547#M16197 <P>Hi Ying,</P> <P>thank you for your answer.</P> <P>MKL Version 11.1 Update 2. An example script which crashes reproducible I cannot provide at the moment. Once I have one I will provide it.</P> <P>An other idea: Is it possible to redefine MKL memory function from C#. So that i_malloc is Marshal<SPAN xmlns="">.</SPAN>AllocHGlobal Method? I think that dtrnlsp_solve (that one which crashes) allocates memory internally to compute the updated values of&nbsp;x.</P> <P>Regards</P> <P>Michael</P> Tue, 01 Apr 2014 15:49:58 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/C-Nonlinear-Optimization-Problem-Solvers/m-p/965547#M16197 Michael_W_1 2014-04-01T15:49:58Z