Showing posts from April, 2015

Professor Mike Powell F.R.S

We are pained to pass on the sad news of the death on 19th April of Prof Mike Powell F.R.S, a brilliant numerical analyst specialising in numerical optimisation and approximation theory. 

Mike touched many lives with his work. NAG and NAG's community benefitted greatly because he gave freely his code to NAG from the very beginning. The more mature may remember the routine E04DCF, an implementation of his hybrid method for unconstrained optimisation. More recently his work on derivative-free optimisation led to E04JCF/e04jcc entering our Libraries as implementations of BOBYQA.
As a founder member of the IMA, Mike took an interest in the IMANA Newsletter and encouraged NAG to contribute regularly to that until the Newsletter's role was subsumed by the internet. 
The Wikipedia page gives more detail of Mike's many achievements. He will be greatly missed by NAG, especially past and present colleagues who had the pleasure of knowin…

Introducing the team: Craig Lucas, Senior Technical Consultant

Craig, describe your role at NAG?

I am a Senior Technical Consultant based in NAG’s Manchester Office. Here I manage part of NAG’s High Performance Computing group. I come from a numerical linear algebra background. For my MSc dissertation I looked at nearest correlation matrix problems, something I still work on today, and this year I have an MSc student looking at more new algorithms.Another big interest of mine is shared memory parallelism with OpenMP, and in particular helping users to better exploit it.

Can you give examples of the customer problems you help solve via NAG Technical Support?

Technical Support is a great way to interact with our users. Queries can range from something very simple, helping people link their program to the NAG Library for the first time, to an in-depth discussion about the accuracy of an optimization routine. It is often challenging and always an opportunity to learn something new about the mathematics of the Library. Sometimes I need to read our docume…