Running OpenIFS on HECToR

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Presentation transcript:

Running OpenIFS on HECToR Glenn Carver* Rosalyn Hatcher** Grenville Lister** Mark Richardson† * ECMWF, ** NCAS-CMS, † NAG

Running OpenIFS on HECToR CMS hosts an OpenIFS FCM code repository on PUMA Code available over the web Accessible to those with an OpenIFS licence Reading and Manchester have licenses Glenn & Ros maintain list of authorized users

Running OpenIFS on HECToR HECToR code installation FCM grib_api eckit ecbuild FDB Mars Metview

Running OpenIFS on HECToR HECToR OpenIFS build a few lines of scripting (template provided) driven by a simple FCM configuration file HECToR job submission simple batch scheduler (PBS) script Sample jobs T159 T511 T1279 supplied by Glenn start data, namelists

Running OpenIFS on HECToR

Running OpenIFS on HECToR DCSE Project OpenIFS FDB IO single writer replaced with parallel IO model – hide IO cost Important for high-resolution modelling and/or creating lots of data

Running OpenIFS on HECToR

Running OpenIFS on a desktop OpenIFS supports gfortran, pgi, intel, ibm, cray compilers SUSe desktop 8 core Intel i7 32Gb T159L60 4 OMP threads 20 days/hr (30m ts, gfortran) T511L60 2 MPI tasks, 4 OMP threads, 1 day/1.6 hrs (15m ts) IO-dependent performance (non FDB)