Title :
Study of machine round-off response on weather forecasting simulations using high performance computing systems
Author :
Janakiraman, S. ; Ratnam, J.V. ; Kaginalkar, Akshara
Author_Institution :
Centre for Dev. of Adv. Comput., Pune Univ., India
Abstract :
The weather forecasting model T80L18 is found to be sensitive to variations in the computing platform. The global spectral model simulations variation due to machine round-off is examined using rounding mode analysis and the perturbation methods. The perturbation simulations of machine round-off correctly estimates the error bounds of the T80L18 weather forecasting model.
Keywords :
digital simulation; error analysis; floating point arithmetic; geophysics computing; roundoff errors; weather forecasting; T80L18 weather forecasting model; computing platform; error bounds; floating-point arithmetic; global reduction calls; global spectral model simulations variation; high performance computing systems; machine round-off response; machine rounding errors; perturbation methods; rounding mode analysis; rounding modes; weather forecasting model; weather forecasting simulations;
Conference_Titel :
High Performance Computing in the Asia-Pacific Region, 2000. Proceedings. The Fourth International Conference/Exhibition on
Conference_Location :
Beijing, China
Print_ISBN :
0-7695-0589-2
DOI :
10.1109/HPC.2000.843604
