Niek Linnenbank's Blog

PDCS Master Thesis: Implementing MINIX on the Single Chip Cloud Computer

nieklinnenbank — Wed, 19 Oct 2011 19:08:13 +0000

It has been long since I last wrote here. The reason is I was very busy finishing my PDCS master thesis this summer. All the hard work paid off very well. I successfully graduated with an average grade of 8.3! During my time at the Vrije Universiteit I learned a lot about technical subjects like distributed systems, parallel computing and security but also about presentations, writing good reports and how to do research well. What I especially liked about the PDCS program is that there was much opportunity for specialization. In my case, I have a strong interest in operating systems and I could combine this perfectly with my interest in the parallel computing and security area’s of PDCS. This was especially true for my graduate project, which involved implementing the MINIX operating system to the Intel Single Chip Cloud Computer. In short, the SCC is an experimental new architecture by Intel, attempting to scale multicore systems to hundreds to thousands of cores on a single chip. There are a number of reasons why we think MINIX and microkernels in general could be an excellent fit for systems like the SCC, which are, in addition to many technical details, also discussed in my thesis. If you want to read my thesis, visit the projects page on my personal website, or click here to directly download my thesis.

Today, I actually received my diploma at the Vrije Universiteit during an officially organized ceremony. Of course, my parents were there, but also both my grandmother’s. I especially appreciated that Prof. Andrew S. Tanenbaum was also there, who supervised the projects I did in MINIX during my time at the VU, including my graduate project. We took photo’s of the event as well, see some shots below!

A little 100k Android experiment

nieklinnenbank — Wed, 26 Jan 2011 22:26:32 +0000

Long time no posts, but this may be interesting. Recently I’ve started to look at Google Android development and decided to write a small game to see how easy it would be. And surprise surprise, it’s a piece of cake. The game I wrote is a simple puzzle game called Plumber. The goal is to rotate pipes so they form a path from the valve to the end. With Eclipse I learned Android and wrote the game in less than 2 days work. I published it on the google market 2,5 weeks ago and now it has already reached over 100,000 downloads, not to mention the money it generates with admob. Users generally like the game and I got loads of positive comments and feedback by mail. Anyway, I think this demonstrates the capabilities of google market and the mobile computing platform in general very well and it’ll be interesting to see how such simple games can really grow into something.

Welcome to China!

nieklinnenbank — Sun, 04 Jul 2010 06:19:08 +0000

After a 27-hour travel from Amsterdam to our Kungfu hotel in Zhengzhou China, we finally arrived, totally messed up, with a big jet lag. The plane from Bejing airport to Zhengzhou was delayed for several hours because of a storm. But from the moment we left schiphol, every day has been an incredible adventure. The people here in China love us! When we walk in the streets here, everybody watches us, smiles and waves, especially the girls . We are like Michael Jackson here! The food is good (very different from chinese food in europe) and we do what we want everyday. Our room is filled with stuff we bought in the enormous shops here in Zhengzhou and the shaolin temple. We’ve also been to a classical teahouse with our shifu (our shaolin kungfu teacher). It’s such an experience to be here. It seems that everything in china is broken. In our room, electicity and water goes on and off at random times throughout the day. The toilet is almost falling apart and we have ants in our room stealing our snacks. Even better is the traffic in China: there are no rules. Everybody just drives his car wherever he/she likes. Its a normal thing that cars drive on the wrong side of the road. And when people cross an extremely busy street with cars driving randomy everywhere, people just walk and wait in the middle of the road. I’ve even seen people walking on the highway. Its such a bizarre idea that there are no rules for traffic here. Also funny that people just throw their trash on the street here. Everywhere you walk you find trash. People dont care. Its almost as if there are no rules whatsoever here in china. Words just cant describe the feeling. Just look at the photos and enjoy!

New Camera

nieklinnenbank — Sat, 08 May 2010 20:11:04 +0000

Yay I got a new camera for my birthday! And it works flawlessly with my Linux. Check out these

shots I made:

Presentation: The Google Filesystem

nieklinnenbank — Wed, 17 Mar 2010 20:49:39 +0000

Today it was my turn to present a paper for the Cluster and Grid Computing class. From my own perspective, it went really well, and fortunately I got lots of positive feedback from the audience too.

Thanks to this course I have experienced something very crucial about presentations in general: people are visual. When somebody explains a system to me, I always visualize it in my head, e.g. the interactions between nodes etc. So I paid special attention to use the slides to help visualizing it, and the feedback from the audience confirmed that this really helped a lot. For next time, I’m gonna stick with this approach

Download the presentation here: gfs

MINIX3 += e1000

nieklinnenbank — Tue, 22 Dec 2009 19:31:18 +0000

Yay, my Intel Pro/1000 driver for MINIX3 is finally complete, tested and committed to the MINIX3 SVN! I learned a great deal from the project, and had great fun doing it. The easiest part of the project was, a bit surprizingly, writing the driver. I got the first version working under Qemu in roughly 2,5 weeks from start, but it took me until December to test it on several real hardware cards, measure performance and write the final report (coming soon here). As a nice-to-have extra, I wrote a tutorial on device driver development on the MINIX3 wiki, which I really missed when I started learning MINIX3 about two years ago. The absence of a nice tutorial like that made it (too) difficult for me to get started with contributing code to MINIX, and was eventually the main reason I wrote FreeNOS. Ofcourse, have a look on the MINIX3 wiki and SVN if you’re interested Enjoy!

Linked into the network

nieklinnenbank — Tue, 22 Dec 2009 19:15:23 +0000

It had to happen someday — I created an LinkedIn account. It’s not complete yet, but it has some general information about me, my studies, work etc. Nice to have

Back to Sportcentrum De Meern

nieklinnenbank — Sat, 14 Nov 2009 23:23:17 +0000

Well, I’ve healed It took ~1 week to get rid of the flu, but much longer for the cold. And even tho after 1 week the flu was gone, I had so little energy I couldn’t even lift a feather with two hands! Fortunately I’m 100% now again and doing kung-fu and fitness as much as I can (love it!).

Saturday last week, I went with my dad to Sportcentrum De Meern for a free fitness try-out. Years ago, I practiced jiu-jitsu at SDM together with my brother. My father drove us there by car every friday, and he did fitness exercises there while we did jiu-jitsu. It was great, but at some point our teacher had somekind of (financial?) problem with the owner and stopped his lessons so I left SDM. But now, I practise fitness as well so I’ve decided to go back to SDM and practise fitness there with my father!

Caught a nasty cold :-(

nieklinnenbank — Fri, 23 Oct 2009 19:33:23 +0000

This week I caught a nasty cold — now I have a headache, flu and my muscles hurt I haven’t been sick for years, but sometimes the unexpected can happen. I’m gonna take a good rest, so I’ll hopefully be better soon.

A new beginning at the VU!

nieklinnenbank — Mon, 19 Oct 2009 00:00:22 +0000

Since a few weeks, I’ve started with the master Parallel Distributed Computer Systems at the Vrije Universiteit Amsterdam. It’s almost impossibly busy now, but I’m having a great time and that’s what it’s all about. (I’m mentioned in the HU-Ezine some time ago for it, how cool is that ) One of the projects I am working on is, ofcourse, MINIX 3. I have been assigned the incredibly cool task of writing a driver for the Intel Pro 1000 Gigabit Ethernet card, and it’s going really well. I got the card working under Qemu and a real card already, and we’re doing performance benchmarks as I write this post. Another sweet thing is that I get 9 credits for this project

I’m also doing the Computer Networks Practical, Parallel Programming, and I’m in the WS-Escape project as a research assistant. Meanwhile I also work as an Open Source Consultant at Industrial TSI since August this year, and sport every day at Ram’s Thai and the Shaolin trainings.

Unfortunately due to all these activities, I have very little time for FreeNOS. But I hope some extra time will become available soon, so we can release 0.0.5 to the world

Take care,

Niek