Thinking Parallel

A Blog on Parallel Programming and Concurrency by Michael Suess

Archive for the 'OpenMP' Category

OpenMP 3.0 – Public Draft Available

I usually don’t post press releases. But this one is different, since my favorite parallel programming system has almost reached its third major release. That’s right, OpenMP 3.0 is right around the corner and this is your chance to get your early fix. The language committee has worked very hard to make it a true […]

OpenMP Does Not Scale – Or Does It?

While at the Parco-Conference two weeks ago, I had the pleasure to meet Ruud van der Pas again. He is a Senior Staff Engineer at Sun Microsystems and gave a very enlightening talk called Getting OpenMP Up To Speed. What I would like to post about is not the talk itself (although it contains some […]

Top 15 Mistakes in OpenMP

It has been a while since I have done this little experiment, but I still find the results interesting. As some of you may know, I teach a class on parallel programming (this is an undergraduate class, by the way – may I have a million dollar in funding now as well, please? ). The […]

Breaking Out of Loops in OpenMP

I have been quite late with my post this week, I apologize for that, but I have been sick with a cold (and I still am). Couple that with the fact that I did not find the time to write one or two posts in advance since Iwomp and you see why I am late […]

Some Fresh News on OpenMP

It’s been a short while since I came back from IWOMP but I would still like to share some of the news and experiences I have brought back from there. It’s been a really great experience for me, both at the conference and in the city of Beijing – which is always worth a trip, […]

Parallel Programming Fun with Loop Carried Dependencies

There was a very interesting discussion on the OpenMP Mailing List last week about a for loop and how to parallelize / optimize it. I will comment on the problems and solutions presented there and also have an interesting observation to add at the end of this article. Although the examples are in OpenMP, the […]

Ten Questions with Sanjiv Shah about Parallel Programming and OpenMP

This is the third post in my Interviewing the Parallel Programming Idols-Series. My interview partner today is Sanjiv Shah, who I was lucky enough to meet at various OpenMP-workshops. I have come to know him as the most knowledgeable person about OpenMP and parallel programming ever :P. Let me add a little bit about his […]

Exceptions and OpenMP – an Experiment with Current Compilers

I have blogged about OpenMP and exceptions in the past. I have shown you what the OpenMP-specification has to say about exceptions. I have also shown you some (tiny) workarounds for the limitations regarding exceptions sketched in the spec. Unfortunately, this is only one side of the medal. When you actually try to use exceptions […]

Making Exceptions Work with OpenMP – Some Tiny Workarounds

In one of my last articles, I have told you about the state of affairs regarding exceptions and OpenMP. I also promised you a follow up-post that highlights some limited ways to work around some of these problems from a user perspective. This is it. Be warned: it is going to be short and sweet, […]

A Vision for an OpenMP Pattern Library in C++

This post serves a triple-role: First of all, it is a vision document for the project I am doing at work right now. It describes the high-level goals for me and the people that will be working on the project with me – saving me from having to explain them multiple times and also providing […]