https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/How-to-implement-numpy-broadcast-mechanism-with-mkl/m-p/1126737#M25305 <P>How to implement numpy broadcast mechanism with mkl?</P><P>&nbsp;&nbsp;I have been confused, how to use mkl to efficiently implement the broadcast mechanism in numpy ((Element wise operator "+","-","*")?<BR />such as<BR />2-D array sub 1-D array<BR />[[1,2,3],<BR />[4,5,6],<BR />[7,8,9]]<BR />-<BR />[1, 2, 3]<BR />=<BR />[[0, 0, 0],<BR />[3, 3, 3],<BR />[6, 6, 6]]</P><P><BR />And the second operation (can be understood as a matrix multiplied by a diagonal matrix)<BR />2-D array multiply 1-D array(Element wise multiply )<BR />[[1,2,3],<BR />[4,5,6],<BR />[7,8,9]]<BR />*<BR />[1, 2, 3]<BR />=<BR />[[1, 4, 9],<BR />[4, 10, 18],<BR />[7, 16, 27]]</P> Fri, 04 Jan 2019 14:19:29 GMT xianfeng__liang 2019-01-04T14:19:29Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/How-to-implement-numpy-broadcast-mechanism-with-mkl/m-p/1126737#M25305 <P>How to implement numpy broadcast mechanism with mkl?</P><P>&nbsp;&nbsp;I have been confused, how to use mkl to efficiently implement the broadcast mechanism in numpy ((Element wise operator "+","-","*")?<BR />such as<BR />2-D array sub 1-D array<BR />[[1,2,3],<BR />[4,5,6],<BR />[7,8,9]]<BR />-<BR />[1, 2, 3]<BR />=<BR />[[0, 0, 0],<BR />[3, 3, 3],<BR />[6, 6, 6]]</P><P><BR />And the second operation (can be understood as a matrix multiplied by a diagonal matrix)<BR />2-D array multiply 1-D array(Element wise multiply )<BR />[[1,2,3],<BR />[4,5,6],<BR />[7,8,9]]<BR />*<BR />[1, 2, 3]<BR />=<BR />[[1, 4, 9],<BR />[4, 10, 18],<BR />[7, 16, 27]]</P> Fri, 04 Jan 2019 14:19:29 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/How-to-implement-numpy-broadcast-mechanism-with-mkl/m-p/1126737#M25305 xianfeng__liang 2019-01-04T14:19:29Z https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/How-to-implement-numpy-broadcast-mechanism-with-mkl/m-p/1126738#M25306 <P>the same as&nbsp;https://software.intel.com/en-us/forums/intel-math-kernel-library/topic/802035</P> Mon, 07 Jan 2019 05:40:20 GMT https://community.intel.com/t5/Intel-oneAPI-Math-Kernel-Library/How-to-implement-numpy-broadcast-mechanism-with-mkl/m-p/1126738#M25306 Gennady_F_Intel 2019-01-07T05:40:20Z