<p>24/03/2021<br />
Dear Users,</p>
<p>The maintenance operations for Marconi100 have been completed and the cluster<br />
is now back to production.</p>
<p>At the end of the operations, the cluster has been updated to OS RedHat 8.1.1<br />
. Therefore, the cluster underwent some important changes that may have an<br />
effect on your environment.</p>
<p>Please be aware of the following situations:<br />
- when you try to login, it is possible that you will be rejected with a<br />
message about a change on the ECDSA host key. In that case, try to remove the<br />
file .ssh/known_hosts in your local workstation before attempting the login;<br />
- python virtual environments may need to be rebuilt, especially if its usage<br />
involves the composition of graphs because the system libpng has been<br />
updated;<br />
- the module environment has been updated in regards to applications. Modules<br />
contained in profile/chem-phys and profile/lifesc such as Vasp, Gromacs, Namd<br />
and QE are now in their most updated version, while the old modules can still<br />
be found in profile/archive;<br />
- we are experiencing some problems when trying to login with RCM due to<br />
compatibility issues, and we are working on it.<br />
- as announced, the module of Spectrum_mpi/10.4.0 will be soon added to<br />
profile/base, but we are still testing it.</p>
<p>As a general rule, if your applications are encountering problems that<br />
weren't present before the update, we suggest as a first approach to try to<br />
recompile your code with the new environment. </p>
<p>Regards,<br />
HPC User Support - CINECA</p>