Posts by dkrz

Basemap on levante

Basemap has reached end-of-life and we won’t install basemap system wide (python 3 module) but you can easily install it into a personal conda environment like this

On Levante:

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API for Accounting Data

As a project admin or even as a normal project user you may look from time to time into accounting data for resources we provide (Levante, archive, etc.).

For each project you participate in, you can find a table on https://luv.dkrz.de like the one shown below. Usually you only see your own entries. Other user’s names are hidden.

utilization table

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How to build ICON on Levante

The current ICON release 2.6.4 has no setup for building and running on the new HPC system levante

There are multiple options to get an ICON binary and run it:

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Using Spyder on levante

The Python IDE Spyder is hidden in the python3 module and needs additional libraries from spack to start.

Load the missing libraries via spack and load python3 (which contains spyder):

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libGL.so.1 missing

When trying to start a gui application like gvim, you get an error message:

Your system does not support openGL forwarding over X11, and levante does not have the backup openGL library in its library path.

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Data Migration Mistral to Levante

So that not every user or every project has to copy its data from Mistral to Levante, DKRZ will take over this in a coordinated manner. In this way, the bandwidth between the systems can be better utilised.

We will only copy data located in /work - and only for projects that have resources granted on the Levante system.

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OpenSSH Certificate Authentication

You have probably seen the message openssh throws at you when you try to log into a new and unknown host.

Or even this dreaded error that seemingly comes out of nowhere.

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Bus error in jobs

Update: The problem was solved by an update of the Lustre-client by our storage vendor. The workaround described below should no longer be necessary. If you one of your jobs runs into a bus error, please let us know.

When running jobs on Levante, these sometimes fail with a Bus error, similar to the example below:

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