Archive for the ‘Technology’ Category

Tweetup with Alexis Ohanian – Reddit Cofounder

Tweetup with Alexis Ohanian Tweetup with Alexis Ohanian
Tweetup with Alexis Ohanian Tweetup with Alexis Ohanian

Alexis Ohanian ( kn0thing on twitter) – the co-founder of reddit (and the creator of the beloved Reddit Alien) was in Mysore for the TED conference. He took a break from the TED conference to meetup with a bunch of redditers. For those who don’t know he is also the publisher of XKCD books and all the proceeds from the book go to building a school in Laos. It was interesting talking to him about startups, startup school, Paul Graham, ycombinator, traveling in India, the startup scene in India, Social media [link to TED Presentation] and of course reddit.

We gave him a sampling of Indian food (Coconut Groove) and sweets (K C Das). Thanks to @dhempe and @pswam for organising this tweetup.

The James Bond of Datacenters

Conference room

It all started with a faint memory in the increasingly transient nature of the Internet. I vaguely remembered reading about a datacenter which was based somewhere near Stockholm and was built inside an (decommissioned) nuclear bunker. A little bit of googling later I realised that I had read about it on the Pingdom site. I thought to myself that since this is a conference where networking geeks converge, there is a good chance that some attendee knows the people in the Bahnhof ISP. So I sent this mail. Initially no one replied, but then the number of people interested in seeing the datacenter just ballooned. Two people stepped forward to arrange the visit during the lunch break at the conference and the CEO of Bahnhof, Jon Karlung personally gave guided us through this fantastic datacenter.

The entrance to the Datacenter

There is actually a house on top of that hill and there is pathway from the datacenter that opens up onto the top of the hill. The datacenter is actually dug out of hard rock (granite) as can be clearly seen from the pictures of the server floor at the end of the post. It was originally a military bunker and nuclear shelter during the Cold War era. The Code name from the military days Pionen White Mountains can be seen in the photos of the entrance to the datacenter.

Entrance to the White Mountain DC Entrance

The Backup Generators

2 Maybach MTU diesel engines that produce 1.5 Megawatt of AC power provide backup power. The engines were originally designed for German submarines. There is a warning horn from a German submarine that add to the effect :)

The Backup power room German Submarines Engine

The Conference Room

The Conference room and the pathway leading to it is made completely out of metal and glass and it hangs above the server flow adding tothe futuristic space staion look of the datacenter (as can be seen from the picture at the top of the post). There is also a Tintin theme rocket [ See Destination Moon for the Tintin Reference ]

The Tintin Rocket View from the bridge

The Fountains

There are lots of plants around the datacenter to reduce the claustrophobic feel of the bunker and make it like a more natural working environment. The Fountains at the entry also make up the decor of the place but are generally switched off as they make a lot of noise.

Another view of the Fountain The Fountain

The Netops and the Leisure room

This is Bahnhof’s biggest facility in Sweden and this Network operations room is used for running the ISP. The leisure room has a huge fishtank to add to natural feel of the place.

The LCDs in the NetOps room The NetOps room
The CEO and the DC manager The Leisure room

The Server Floor

Some of the walls of the server floor are unadroned and are made of bare rock giving away the initial use of the facility as a Cold war Era nuclear bunker.

Servers The Servers

Bahnhof uses the unique nature of the datacenter for marketing purposes. IT is actually possibe to co-locate your servers here. The Pionen Datacenter gives a whole new meaning to disaster recovery backup. :)

ACM Compute, Pycon India and Foss.in

With winter approaching fast we are also into conference season.

ACM Compute 2010 – 22nd & 23rd Jan, 2010.

ACM Bangalore chapter is organising ACM Compute 2010 which is into it’s third year now. This year the broad theme is Cloud computing and Information retrieval, management and analytics. The aim of this conference is to bring together researchers, practitioners, technology market movers, and thought leaders, with a view to advance the state of the art, and the state of the practice in applied research. This year we are planning to do something special – details soon :) The Call of papers (CFP) is out for sometime now and the last date for submissions is Oct 1 2009. You can also submit a proposal for a half-day or day long tutorial. Last year we had a bunch of good tutorials and also the symposium on Cloud Computing co-located with ACM Compute 2009 which was a great success.

Disclaimer: I am on the program committee of ACM Bangalore and am the secretary of the ACM Bangalore chapter.

Pycon India 2009 – 26th & 27th Sep 2009

Also this weekend (26th and 27th September 2009) India’s first Pycon India 2009 is being held in Bangalore. There is an interesting list of talks lined up. So do register if you are interested in attending.

Foss.in – December 1-5, 2009.

Foss.in shifts to a new venue this year NIMHANS convention centre. This year promises to be interesting as the venue is available for longer durations. Also there are going to be hacker evening/nights where tinkerers can meetup and talk about a whole range of stuff not restricted to just FOSS. My educated guess is something on the lines of CCC in Germany. Definitely something to look forward to. Plus I think there will be atleast one evening where we will have music :) . So join the mailing list if you are interested in presenting/attending as more details should emerge soon.

Photos from IETF 75, Stockholm

One of the memorable events of the IETF meetings was a photo session for ISOC with the Vint Cerf as mentioned in my earlier post on IETF 75. The photo shoot was held after the welcome reception in the Stockholm City hall. The photos themselves were taken in the City hall complex facing the Stockholm skyline. Here are some photos from the IETF photo session. You can see me standing in the backrow alongside with Vint Cerf in some of the photos. My mentor at IETF, Al Morton, is the person in shorts in the front row. The ISOC fellows came from several countries including India, Kenya, Venezuela, Uganda, Brazil, Uruguay, Pakistan, Morocco and Bangladesh.

Photo Credits Lincoln McNey (ISOC – Internet Society)

Ronald Nsubuga (Uganda) Hamid Mukhtar (Pakistan) Eduardo Ascenço Reis (Brazil) Dorcas Gachari (Kenya) Md. Aminul Haque Chowdhury (Bangladesh)
Afaf El Maayati (Morocco) Alberto Castro (Uruguay) Alejandro Acosta (Venezuela) Vinayak Hegde (India) Muhammad Haris Shamsi (Pakistan)

Later we had a dinner at the Clarion Sign Hotel in Stockholm with our mentors and ISOC Staff. It was addressed by Vint Cerf.

Vint Cerf’s Business card

IETF 75 and the ISOC Fellowship

The ISOC Fellowship

In Feb 2009, I won an ISOC fellowship to attend the IETF conference. The ISOC fellowship pays for the airfare, stay in the hotel and the conference fees of the IETF participants. The process to apply for the ISOC fellowship is competitive and only participants from third world countries can apply. In Jan 2009 there were 145 applicants who wrote proposals for the work they plan to do at the IETF out of which 4 people were selected. My proposal was regarding Internet Measurement and Analysis – the area of work I have been working at Akamai for the last 5 years. More specifically I was working on drafts which outlined the metrics and the ways for measuring them for websites/webapps and streaming quality. Network application measurements has been one area which has been weakly represented and not much work was happening in these area. There was some related work happening in IP Performance metrics groups and PMOL working groups but none in the above mentioned areas. My work was to fill in those gaps by writing drafts and then soliciting comments and finally working through the IETF process to get it standardized. I was also vouched for by two people who knew about my work which helped me win this fellowship.

The IETF and conference details

The IETF conference is the topmost conference where network engineers meet to discuss RFCs, best practices and share operational knowledge of running various that make up the Internet. I attended the 75th edition which was held in Stockholm from July 26 – July 31st 2009. The IETF is different from most other conferences in the sense that it is a collection of working group meetings. Each of the working groups decides it’s own agenda and the drafts that they want to discuss in the meeting but bulk of the work happens on the mailing list beforehand. Also anyone can join the mailing list and participate in the discussions. So the IETF meeting really is a loose collection of several miniconferences (for the lack of the better word). Please read the Tao of the IETF if you are interested in how the IETF works. The following quote (from the Tao of the IETF) quite accurately describes how the IETF works.

“In many ways, the IETF runs on the beliefs of its participants. One of the “founding beliefs” is embodied in an early quote about the IETF from David Clark: “We reject kings, presidents and voting. We believe in rough consensus and running code”. Another early quote that has become a commonly-held belief in the IETF comes from Jon Postel: “Be conservative in what you send and liberal in what you accept”.

In that sense there are strong parallels (low barrier to entry, open access, easy to contribute, dominated by hands-on engineers) with the Free/OpenSource world as Linus Torvalds said

“Talk is cheap. Show me the code.”

If you participate in the IETF, be prepared to have your draft (and data as well) questioned, scrutinized, critiqued and commented upon. It requires lots of patience (and a thick skin :) , convincing power with proper data to prove what you have proposed is worth standardizing and being accepted as an RFC.

My Experience

The IETF conference attracts the best and brightest in the field of networking. It was a pleasure to meet so many great engineers. It was easy to talk to most of other engineers as they were very down to earth. There was no ivory-tower syndrome.

On Sunday, I attended the first-timers meeting. It was useful as it gave an overview of what to expect at the IETF meeting and how to make the best use of it. On Monday, I attended the Audio-Video technology working group meeting. An engineer from Huawei was presenting a draft and participants asked him several questions but he could not answer. When asked about the use-cases when scaling to hundreds of thousands of users, he said that they had tested for only 3-5 users. On hearing this one of the participants said sarcastically that we design protocols that scale for millions of users and not just a few users. This was first of many such blunt and sarcastic comments that I had heard during the conference. It was clear from then on that, if you have not carefully considered all the cases, the draft would not go for further review and will be shot down mercilessly. The next meeting was the Benchmarking Methodology WG. IT was a small crowd as compared to the AVT WG and the proceedings were more cordial. There was some remote participation in this meeting. Personally I found this meeting useful as it was related to my area of network application metrics.

On Wednesday, There was a PMOL (Perfomance Metrics for Other Layers) BoF Session. I talked about perfomance metrics for Webapps and streaming at the PMOL BoF and got some good comments from Al Morton (my mentor) and Henk Uijterwaal (WG Chair for IPPM WG). Al later helped me iwth the xml2rfc tools that are needed to format the RFC draft. Overall the response was positive and I got some good pointers to some earlier work in other standardization bodies such as the ITU. On the subsequent days, I attended the Operations & Administration and Technical plenaries and a talk on “Securing the DNS”.

On Friday, I attended the IPPM (IP Performance Metrics) working group meeting. I was really well-prepared this time having attended several WG group meetings. Also since I had read the drafts and the background materials on the drafts that were going to be presented, I was able to make meaningful comments on some of the drafts that were being presented.

Among the other highlights of the meeting were having a photosession and one-on-one chat with the Vint Cerf – one of the inventors of TCP/IP and the Internet and the welcome reception at the City hall in Stockholm where they have the Nobel Prize banquet. It was addressed by the mayor of Stockholm among others and it felt great to occupy the same space as some of the brightest minds of this century (of course, separated by time :) .

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