Is there a way to ask TildeArray to print all the intermediate quantities and operations (i.e. permutation, GEMM, etc.)?

[xlliu98]

No description provided.

[justusc]

Yes there is. You can find the interface code here. https://github.com/ValeevGroup/tiledarray/blob/master/src/TiledArray/expressions/expr_trace.h

It has been a while, but if I remember the code was

std::cout << c("i,k") << a("i,j") * b("i,k");

which prints out the equivalent to the expression

c("i,k") = a("i,j") * b("i,k");

the print does not actually evaluate the expression. It just walks the expression tree to generate the expected operations, including permutations.

It was not a feature that was often used, so I am not sure if the feature was broken or not implemented for certain expression types since I last worked on the code. If their are missing implementations, extending the code should be fairly simple as you would only need to add a print function that matches the interface of other expressions.

[xlliu98]

Thanks. Is there a similar way for block expressions?

[justusc]

I think that may not have been implemented.