TY - GEN
AU - G. Mozdzynski
AU - J.-J. Morcrette
AB - Radiation computations in IFS are a relatively expensive part of a high resolution forecast model taking approximately 10 percent of the total time. This current level of cost is achieved by running the radiation scheme only once every forecast hour and by using a radiation grid resolution which is coarser than that of the model grid. This technical memorandum investigates a new approach for the radiation scheme where the radiation computations execute in separate tasks from the rest of the model, with the objective of improved scalability and performance. The approach serves as an example that could be applied to other parts of IFS as scalability becomes increasingly more challenging on future supercomputers.
BT - ECMWF Technical Memoranda
DA - 04/2014
DO - 10.21957/pxjpl93ov
LA - eng
M1 - 721
N2 - Radiation computations in IFS are a relatively expensive part of a high resolution forecast model taking approximately 10 percent of the total time. This current level of cost is achieved by running the radiation scheme only once every forecast hour and by using a radiation grid resolution which is coarser than that of the model grid. This technical memorandum investigates a new approach for the radiation scheme where the radiation computations execute in separate tasks from the rest of the model, with the objective of improved scalability and performance. The approach serves as an example that could be applied to other parts of IFS as scalability becomes increasingly more challenging on future supercomputers.
PB - ECMWF
PY - 2014
EP - 20
T2 - ECMWF Technical Memoranda
TI - Reorganization of the radiation transfer calculations in the ECMWF IFS
UR - https://www.ecmwf.int/node/11300
ER -