dft_tools/test/triqs/arrays/mat_vec_mul.output

A = 
[[1,3,5,7,9]
 [2,4,6,8,10]
 [3,5,7,9,11]
 [4,6,8,10,12]
 [5,7,9,11,13]]

A(R,R) = 
[[4,6]
 [5,7]]

 MC(R) = [1,1]

 MB = [10,12] = [0,10,12,0,0]

testing infix

A = 
[[4,6]
 [5,7]]

 MC = [1,1,1,1,1]

 MB(R) += A(R,R) * MC(R) = [0,20,24,0,0]

 explicit blas call

 MC = [1,1,1,1,1]

A = 
[[4,6]
 [5,7]]

 MB = [0,10,12,0,0]

A = 
[[4,6]
 [5,7]]

 MB = [0,10,12,0,0]

A = 
[[4,5]
 [6,7]]

 MB = [0,9,13,0,0]
First commit : triqs libs version 1.0 alpha1 for earlier commits, see TRIQS0.x repository. 2013-07-17 19:24:07 +02:00			`A =`
			`[[1,3,5,7,9]`
			`[2,4,6,8,10]`
			`[3,5,7,9,11]`
			`[4,6,8,10,12]`
			`[5,7,9,11,13]]`

			`A(R,R) =`
			`[[4,6]`
			`[5,7]]`

			`MC(R) = [1,1]`

Fix matrix * alias issue and adapt det_manip - The previous version of the * operator for matrix was too clever. It was giving a lazy object and then rewriting C = A B into gemm (a,A,B,0,C). The pb was in case of aliasing : when e.g. C = A, or is a part of A. gemm is not correct that case, and as a result generic code like a = a b may not be correct in matrix case, which is unacceptable. - So we revert to a simple * operator for matrix that does immediate computation. Same thing for matrix* vector - we also suppress a_x_ty class. -> for M = a * b, when M is a matrix, there is no overhead due to move assignment -> however, when M is a view, there is an additionnal copy. -Correctness comes first, hence the fix. However, if one wants more speed and one can guarantee that there is no aliasing possible, then one has to write a direct gemm call. -> det_manip class was adapted, since in that case, we can show there no alias, and we want the speed gain, so the * ops where replaced by direct blas call (using the array blas interface). -> also gemm, gemv, ger were overloaded in the case the return matrix/vector (i.e. last parameter of the function) is not an lvalue, but a temporary view created on the fly. 2013-09-10 21:41:17 +02:00			`MB = [10,12] = [0,10,12,0,0]`
First commit : triqs libs version 1.0 alpha1 for earlier commits, see TRIQS0.x repository. 2013-07-17 19:24:07 +02:00
			`testing infix`

			`A =`
			`[[4,6]`
			`[5,7]]`

			`MC = [1,1,1,1,1]`

			`MB(R) += A(R,R) * MC(R) = [0,20,24,0,0]`

			`explicit blas call`

			`MC = [1,1,1,1,1]`

			`A =`
			`[[4,6]`
			`[5,7]]`

			`MB = [0,10,12,0,0]`

			`A =`
			`[[4,6]`
			`[5,7]]`

			`MB = [0,10,12,0,0]`

			`A =`
			`[[4,5]`
			`[6,7]]`

			`MB = [0,9,13,0,0]`