Author Archives: frederik

Booting Ubuntu-12.04 cloud images without a cloud

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I was recently asking myself why the P2V concept has not been more fully embraced by the open-source community – and generalized to V2C, virtual machine to cloud instance. From a scientific computing perspective, it would be ideal to seamlessly be able to prototype a data analysis in a virtual machine on a laptop and then run large-scale data … Read the rest

Backup Google Drive / Docs

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Cloud storage is often used for backup, but finding myself relying more and more on cloud-only documents, I felt a need for backup in the opposite direction: backing up my entire Google Drive to local storage – preserving the folder hierarchy. I was not able to find a script that does this, so I wrote one myself. I chose … Read the rest

Awesome Note + Google Drive

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For a long time I’ve been looking for a note-taking app that:

1) is available as an iPhone/iPad app ✔

2) synchronizes to either my own server or Google Docs/Drive ✔

3) has a web interface

4) supports organization of notes in hierarchical folders

5) has “todo” functionality (creation and due dates) ✔

6) allows assignment of priorities ✔

This … Read the rest

Squeezebox and the new LastFM API

squeezebox_mr

Since my last post about SqueezeScrobbler on my Squeezebox, I’ve enjoyed 3 years of LastFM listening on Squeezeboxes, Linux and Mac boxes, iPhones and iPads.

Well, this fall, LastFM announced that they would hit my listening pleasure with dual strikes: deprecation of the old API and discontinuation of the radio service in other countries than the US, UK and Germany. … Read the rest

Christmas in Zurich

Merry Christmas and a happy new year from Zurich!

Vacation in a place you know this well is actually very relaxing. And good old Zurich is largely unchanged – even got chicken sweet and sour at the same place from the same guy as 12 years ago.

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3PGCIC-2011

Back in Barcelona to present a paper at 3PGCIC-2011 – a well organized and pleasant conference with a varied program. Good discussions on distributed computing. Excellent social arrangements including the reception banquet at the charming Institut d’Estudis Catalans and a visit to the Mare Nostrum supercomputer of the BSC – located in a former chapel.

.… Read the rest

Taking citizen cyberscience a step further

Citizen Science

Recently I’ve stumbled upon the terms citizen science and citizen cyberscience. The last term was apparently invented by Shuttleworth Fellow Francois Grey as a label for BOINC-based distributed computing projects like seti@home, folding@home and his own lhc@home. Grey is also behind the Citizen Cyberscience Centre in Geneva – on the web pages of which there’s more information to be … Read the rest

CERN School of Computing 2011 was… awesome

LectureNyhavnCSCCanoeing

As exemplified on the pictures above (from the photo gallery of one of the students), CERN School of Computing includes a good deal of extracurricular activities. Which probably goes a long way in explaining the good and humorous atmosphere in the classroom.

Having spent a lot of energy preparing the exercise with the great CSC team, it really was great … Read the rest

The vision of GridFactory

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In this post I’ll try to explain the vision behind a software suite I wrote at the Niels Bohr Institute, University of Copenhagen, 2009-11.

The ideas for the software arose from my dual involvement with the high energy physics and the e-science groups. Some of the code originated in previous projects, including distributed computing efforts of the ATLAS experiment at … Read the rest

Van der Pals

"Works for cello & piano" by Leopold van der Pals

Works for cello & piano by Leopold van der Pals

Came across this CD by chance. The soloist – living here on Østerbro, is the grandson of the composer .

Post-romantic, austerity, suspense and longing. Apparently it appeals to the younger generations :-)

Pablo (and tia Chata) enjoying the music:

To see the video → Read the rest

Headweb on Boxee Beta 0.9.22.13692

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I’m quite happy with my small HTPC running Boxee on Ubuntu. The hardware is a Zotac Ion board with an Atom CPU and an Nvidia graphics card. Both software and hardware have their issues, but after enough hacking I’ve a setup that gets the job done wrt. watching movies off my file server. My main gripe has been the lack … Read the rest

CERN School of Computing 2011 – Exercise 2

In this exercise we’ll solve the same assignment as in exercise 1, but using a prepackaged GridPilot application.

  • Download and install GridPilot
  • Start GridPilot and answer the initial questions – enable only the computing system “GridFactory” and set the submission host to gridfactory.nbi.dk
  • Import the app “ttbar_exercise”
  • Select the application/dataset “ttbar_exercise-100k-events” and click “Run”
  • Select the application/dataset “ttbar_exercise-merge” and
  • Read the rest