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Welcome!

Please use this knowledge base to use ECMWF computing and archiving services, to address common problems and to search for best practices.

Due to the move of our Data Handling System (DHS) to the new Data Centre in Bologna there will be no or degraded access to some data in MARS and ECFS at times between June and October 2022. Please visit our dedicated data centre migration pages for more information. Thank you for your patience and support during this important move, which will allow exciting scientific developments and overall better service.

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Recent news

As of 23 March, the Climate Data Store (CDS) and Atmosphere Data Store (ADS) are the first two user facing services operationally supported from our new Data Centre in Bologna. Following that successful migration, we would like to update you on the next steps in the transition to the Bologna Data Centre. The Atos system, the central component of the new infrastructure in Bologna, was initially expected to start its operational service on 1 May 2022.…
Following the termination of the test Atos system (TEMS) in Reading in November 2021 and a lot of work by many teams across ECMWF, we are pleased to announce the availability of the first Atos cluster, named 'aa', in Bologna, for Member State users of our High Performance Facility (HPCF).   If you are currently using our Cray HPCs (cca and ccb), we invite you to start testing your activities on the first Atos system (aa). To help you with this work,…
ECMWF is updating the default versions of its software packages and libraries used across all user platforms at the centre as part of the regular update cycle. The changes will take place on Wednesday 6 October 2021 09:00 UTC All user platforms at the centre will see their default additional software stack updated: All clusters in our High Performance Computing Facility, mainly CCA and CCB ECGATE Linux Clusters Linux Desktops TEMS We strongly recommend you test that your programs,…