Author's Blogs

Doctor Fortran in "It's a Modern Fortran World"
By Steve Lionel (Intel)Posted 12/30/20130
I recently received a copy of "Numerical Computing with Modern Fortran", by Richard Hanson and Tim Hopkins, and noted how many books on Fortran are being published recently with "Modern Fortran" in the titles. It turns out this is not a new phenomenon - a search on Amazon.com shows that this phra...
Has it really been 35 years?
By Steve Lionel (Intel)Posted 10/02/20133
I knew this date was coming up, but I had forgotten about it for a while until my manager reminded me - October 2, 2013 marks my 35th anniversary "at Intel". I put that in quotes because Intel "grandfathered" my time at DEC and Compaq. It was October 2, 1978, when I walked into DEC's facility in ...
Doctor Fortran Goes Dutch: Fortran 2015
By Steve Lionel (Intel)Posted 08/08/20131
The ISO Fortran Standards Committee held its annual meeting in Delft, The Netherlands, in late June. I represented Intel at this meeting where the focus was on completing the set of requirements for the next revision of the Fortran standard, to be called Fortran 2015. You can read my earlier post...
Doctor Fortran in "Source Form Just Wants to be Free"
By Steve Lionel (Intel)Posted 01/11/20130
In the beginning, there was only one source form for FORTRAN (as it was then known) programs. Each statement was exactly 72 characters long - no more, no less. (See note below.) Columns 1-5 were for statement labels, whole line comments were indicated with a C in column 1, and column 6 was reserv...
Doctor Fortran in "I Can C Clearly Now, Part I"
By Steve Lionel (Intel)Posted 05/11/20121
Spend any time in the comp.lang.fortran newsgroup, or other places where programming languages are discussed, and you’ll soon see a new “Which is better, Fortran or C?” thread show up. These never fail to produce heated comments from people who should know better. My answer is that neither is “be...
Doctor Fortran Gets Explicit - Again!
By Steve Lionel (Intel)Posted 01/05/201211
Nearly 11 years ago (!) I wrote an item for the Visual Fortran Newsletter on explicit interfaces in Fortran. In recent weeks, I have had to refer quite a few customers to this article, suggesting that many Fortran programmers don't understand the role and rules of explicit interfaces. However, wh...
Doctor Fortran in "Lest Old Acquaintance Be Forgot"
By Steve Lionel (Intel)Posted 12/23/20113
In some of my earlier posts I've discussed new features in the Fortran language that might be unfamiliar to some.  But this time I'm going to go the other way and describe some really old language features - so old that many newer Fortran programmers are mystified when they see them - but these f...
The Real Doctors of Fortran
By Steve Lionel (Intel)Posted 09/22/20117
In this blog, I refer to myself as "Doctor Fortran".  It's a joke that started more than ten years ago when I decided to write an "advice column" for what was then the Digital Visual Fortran Newsletter.  Everyone liked it so much I stuck with it, but I've always been aware of the people who deser...
Introducing Intel® Fortran Studio XE 2011
By Steve Lionel (Intel)Posted 09/06/20115
Let us return to those thrilling days of yesteryear. Yes, I mean November 2010 when Intel® Parallel Studio XE was first released. This suite of high-performance computing development tools included new versions of the Intel C++ and Fortran compiler products, (now renamed "Composer XE"), and two n...
Thirty Years of Zonker Kookies
By Steve Lionel (Intel)Posted 10/20/20108
It is a beautiful autumn day here in Southern New Hampshire. The air is clear and crisp, the sun is bright and the trees have (finally!) brought out some color, which I can see looking out the window near my cube.  But soon, I will pack up the rest of my things and leave that view, and the cube, ...