New interpolation package MIR ready for testing

The new ECMWF interpolation package MIR (see ECMWF Newsletter No. 152) is now ready for testing by users of the MARS archive.

A version of the MARS client using MIR (MARS/MIR) is available on all ECMWF platforms and can be accessed using the command ‘mars -m’. It can also be tested using the ECMWF Web API adding the key word ‘ppengine=mir’. MARS/MIR is not considered ready for production at this point and should only be used for testing purposes.

MARS users are encouraged to test this new MARS/MIR client with their usual workload and report any problems or feedback to ECMWF.

The expected timeline for the operational implementation of MARS/MIR is as follows:

  •  June 2018: Release of a MARS/MIR client considered ready for production. The old MARS/EMOSLIB client will still be the default.
  • Autumn 2018: MARS/MIR becomes the default version at ECMWF. The old MARS/EMOSLIB will still be accessible, but there will be no further updates to it.

Users can find more information about MARS/MIR in the ECMWF User Documentation wiki space, including the main differences and known issues:

https://software.ecmwf.int/wiki/display/UDOC/MARS+interpolation+with+MIR

This page will be updated to reflect any changes or new features, including the exact implementation dates. You may want to ‘watch’ this page to be notified about those updates.