https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/QRDecomposition-using-LAPACK-package/m-p/1168548#M28390 Hello, I am doing QR decomposition using LAPACKE_dgeqrf() function. Strangely it works fine on my windows Desktop but when I run same code on other windows desktop it gives error as 5th parameter is illegal. Here is the example, Double input[5][4] = { 1, 2, 3, 4 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 }; Input is converted to 1D array. double test[20] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 }; double tau[4] = { 0 }; lapack_int status ; status = LAPACKE_dgeqrf(LAPACK_ROW_MAJOR, 5, 4, test, 4, tau); Here, above function returns status '0' on my desktop but on other windows desktop it returns status as '-5'. Anyone have any idea, what is going wrong here? Thu, 12 Apr 2018 08:20:58 GMT Patil__Rupali 2018-04-12T08:20:58Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/QRDecomposition-using-LAPACK-package/m-p/1168548#M28390 Hello, I am doing QR decomposition using LAPACKE_dgeqrf() function. Strangely it works fine on my windows Desktop but when I run same code on other windows desktop it gives error as 5th parameter is illegal. Here is the example, Double input[5][4] = { 1, 2, 3, 4 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 }; Input is converted to 1D array. double test[20] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 }; double tau[4] = { 0 }; lapack_int status ; status = LAPACKE_dgeqrf(LAPACK_ROW_MAJOR, 5, 4, test, 4, tau); Here, above function returns status '0' on my desktop but on other windows desktop it returns status as '-5'. Anyone have any idea, what is going wrong here? Thu, 12 Apr 2018 08:20:58 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/QRDecomposition-using-LAPACK-package/m-p/1168548#M28390 Patil__Rupali 2018-04-12T08:20:58Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/QRDecomposition-using-LAPACK-package/m-p/1168549#M28391 <P>what version of mkl do you use?</P> Thu, 12 Apr 2018 16:22:25 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/QRDecomposition-using-LAPACK-package/m-p/1168549#M28391 Gennady_F_Intel 2018-04-12T16:22:25Z