Preface

In September 2024 NHR@ZIB replaces the global file systems HOME and WORK in all systems of Lise in Berlin. This affects all login nodes and all compute partitions Compute partitions. Please be aware of the following activities.

• For September 2024 we plan a 3-day maintenance to switch to the new file systems HOME and WORK.

• All data in the HOME file system will be copied by usNHR@ZIB. The user does not have to do anything on HOME.

• The data in the WORK file system need In September 2024 all users will have a transition phase of 3 weeks

It is important for users to follow the action items specified below. Rocky Linux 9 introduces new versions of various system tools and libraries. Some codes compiled earlier under CentOS 7 might not be working under Rocky Linux 9 anymore. Thus, legacy versions of environment modules offered under CentOS 7 were not transferred to the new OS environment or have been replaced by more recent versions.

The migration to the new OS is organised in three consecutive phases. It is expected to be complete by the end of July.

1. The first phase starts with 2 login nodes and 112 compute nodes already migrated to Rocky Linux 9 for testing. The other nodes remain available under CentOS 7 for continued production.

2. After the test phase, a major fraction of nodes will be switched to Rocky Linux 9 to allow for general job production under the new OS.

3. During the last phase, only a few nodes still remain under CentOS 7. At the very end, they will be migrated to Rocky Linux 9, too.

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• will not be copied automatically. Within a time period of three weeks, the users will have the opportunity to copy data from the old WORK to the new WORK file system.

Current migration state

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( ● available ● closed/not available yet )

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