[poulson]

I appreciate the complements, but I disagree with a few of your points:

1. What granularity to distribute the entries in the matrix is a long and subtle argument which doesn't provide a clear winner for every operation (the current conclusions are different for LU with partial pivoting vs. reduction to tridiagonal form). I would by no means say that the approach used by ScaLAPACK is wrong, but only that it is unnecessarily complex and only one operation purposefully targets the finest granularity case.

2. Again, I appreciate the complement, but I don't think that arguments from authority are valid, nor do I think that one can be the "best". I have a large number of colleagues doing wonderful work, much of which I find extremely impressive.

Also, it would be good to disclose that you're affiliated with the project you were promoting.