Re: [ViennaCL-devel] How to do matrix concatenation and matrix column multiplication fast

2013-12-12 Thread Karl Rupp
Hi Albert, I thought that a good way to get good performance is to formulate all the calculations somehow vectorized but I'm not sure if I have chosen the best way because the code performs badly. The matrices are big, about 10k \times 10k in size. This is correct, provided that the

Re: [ViennaCL-devel] How to do matrix concatenation and matrix column multiplication fast

2013-12-12 Thread Karl Rupp
Hi, Thanks for the hints! Right as you were writing, I have implemented now a solution via matrix_range which already performs really well. I guess there wouldn't be any difference in performance between viennacl::column and some matrix_range solution, right? viennacl::column() might be