Does Denmark need a science cloud?


4 years ago we, the ScienceCloud group at DeIC, launched the scientific data-management service

It was a first attempt at building something like this out of open-source components: FreeBSD, ZFS, Apache, ownCloud/Nextcloud and involved engaging with similar projects in other countries (Switzerland, Australia, Germany, Holland) and open-source environments (Nextcloud, CS3).

Today this service hosts about 100 TB of … Read the rest

Sciencedata open for testing


This is the intended replacement for our old workhorse, Those who would like to try out new features targeted at researchers, please give it a try. You’ll need to be able to log in via wayf/edugain, i.e. you need to be affiliated with a European research institution.

The new features we’re exploring are:

- ORCID integration
- ZenodoRead the rest

What’s worse than ODBC?


The classic “Process (aka Designing the Stop Sign)” nails the problem of (Over-) Design By Committee.

But is the real problem here using a committee? Can design not be meaningfully accomplished by group of people working together?

I claim the answer is yes and that typical problem is not the committee per se, but the clueless committee – regardless … Read the rest

Booting Ubuntu-14.04 cloud images without a cloud


So, Ubuntu-14.04, Trusty Tahr, is out; and booting the cloud images requires a bit more hacking than booting the 12.04 cloud images. Here goes:

Get the image, resize and loop-back mount it:

qemu-img convert -c -O qcow2 trusty-server-cloudimg-amd64-disk1.img trusty-server-cloudimg-amd64-disk1_30GB.qcow2
qemu-img resize trusty-server-cloudimg-amd64-disk1_30GB.qcow2 30G
sudo modprobe nbd
sudo qemu-nbd -c /dev/nbd0 `pwd`/trusty-server-cloudimg-amd64-disk1_30GB.qcow2
ls image || mkdir image
sudo … Read the rest

Does Denmark need a supercomputer?

The more precise question is:

Do researchers at Danish universities need a supercomputer on the top-500 list?

A bit of background is useful:

The funding model for HPC in Danish academia, employed since ~2000, described in a previous post, has resulted in a decentralized HPC infrastructure which AFAIK is quite unique in Europe (other European countries have a

Read the rest

Booting Ubuntu-12.04 cloud images without a cloud


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

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


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


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