The ECMWF Model: Past, Present and Future

ECMWF has been involved in multitasking development ever since the first decision to acquire a Cray-XMP with more than one processor. Until recently, this has been a single-minded effort concentrating solely on the operational weather model. Within the last 6 months, the Analysis code, has also become a multitasked operational application. This presentation will however be limited to discussion of the spectral model.