Dear ScaLapack users,

some time ago I have implemented a function for re-distributing a

matrix on the processes grid following the usual two-dimension

block-cyclic distribution scheme. This is an obvious step to use

ScaLapack diagonalization routines that I need.

I am using the word "re-distribute" because the matrices I am

dealing with, are already

distributed among the processes. They are distributed following a

pattern induced by the parallel algorithm I have implemented to build

them.

I did implement the function for re-distributing the matrices to

be quite general, and

apparently it turned to be also quite efficient. Indeed the function

takes as an input a

set of blocks each one with its own dimension and position within the

matrix, and it does

not make any assumption about how the matrix is initially distributed.

However, now that I am involved in a different research project

where I need to use again

such a function, I would like to know in a first instance if a

similar function in ScaLapack or

somewhere else already exists, in order for me to make comparisons.

best regards

Loriano