This technical report describes the porting and performance evaluation activities performed on ORCA025 code, implementing the global ocean general circulation model (OGCM) OPA. The code, currently available and optimized on vector architectures, has been ported on HP XC6000 Itanium2 scalar cluster, provided by the associate partner SPACI. The activity is mainly focused to evaluate how a scalar architecture based on Itanium2 processor behaves with oceanographic model that traditionally run on vector clusters. Performance analysis of the parallel code showed good results in terms of scalability.

NEW NUMBERING (new series “Research papers”): RP0050
OLD NUMBERING (previous series “Technical reports”):  TR29

• Institute for Earth System Predictions

• Advanced Scientific Computing Division

Authors

• Italo Epicoco
• Silvia Mocavero
• Enrico Scoccimarro
• Giovanni Aloisio