Author Archives: frederik

Does Denmark need a science cloud?

cloud1

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

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

sciencedata_front

This is the intended replacement for our old workhorse, data.deic.dk. 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?

TheHomer

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

Catch

sea_trout

This time we landed the catch, Pablo’s first – a beautiful sea trout from Sakskøbing Fjord. A great finale to this years summer vacations. Click on the picture (and log in) to see more.

Booting Ubuntu-14.04 cloud images without a cloud

Ubuntu-trusty

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:

wget cloud-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img
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