Bits & Bytes online Edition

July 2019

Bits & Bytes

Max Planck Computing & Data Facility (MPCDF)
Gießenbachstr. 2, D-85748 Garching bei München

1) Supercomputer Cobra further extended with Quadro RTX GPUs. 2) New job-submit plugin activated on Cobra. 3) Some hints on backfill scheduling and job time limits on Cobra and Draco. 4) Update strategy for the Anaconda Python installations.
A comprehensive HPC performance monitoring system was developed at the MPCDF and deployed on the HPC systems Cobra and Draco. A plethora of performance metrics is collected continuously per socket or per node, e.g. GFLOP/s, memory bandwidth and utilization, data on vectorization, GPU, network, and filesystem utilization, enabling MPCDF staff to monitor application performance on a system-wide scale in real time or retrospectively. Users get access to a performance report in PDF format for each of their jobs via a web service.
Eigensolvers for symmetric matrices play an important role in many areas of science and technology. The development of the ELPA eigensolver library started in 2008, and after becoming open source in 2011, ELPA soon became state-of-the-art with world-wide usage. Now ELPA has been further enhanced and shows an unexcelled performance and scaling behavior.
A novel web-based remote visualization service has been developed at the MPCDF. Interactive, GPU-accelerated visualization sessions can now be requested and used directly via the web browser, enabling easy access to the visualization software and data available on the HPC systems.
Among all the functionalities that DataShare offers, OnlyOffice is one of the most remarkable, especially through the possibility to edit documents online in a collaborative way.
1) GitLab now serves more than 2000 users. 2) Two upcoming events are announced: the Advanced HPC Workshop of the MPCDF in November 2019, and the 11th International HPC Summer School in July 2020.

Tel.: +49 (89) 3299-01,   e-mail:,   URL:
Editor: Renate Dohmen