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Migration of LaRC Icing Products to Columbia Supercomputer. Louis Nguyen, Patrick Minnis, John Murray, and Rabindra Palikonda NASA Langley Research Center Hampton, Virginia, USA. Objectives.
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Louis Nguyen, Patrick Minnis, John Murray,
and Rabindra Palikonda
NASA Langley Research Center
Hampton, Virginia, USA
Transition and Integrate the Langley’s Satellite Products to Operations in the operational National Weather Service Aviation Weather Center CIP product
• Uses the Man computer Interactive Data Access System (McIDAS, developed by SSEC Univ. Wisc)
• McIDAS is a programmable suite of software and interactive data visualization tool used for displaying, analyzing, and acquiring datasets
• Runs on SGI Unix platform
Real-time Data Acquisition System
• GOES-East & West data from via McIDAS ADDE server (SSEC)
• RUC data obtained from SSEC and NOAA Forecast Systems Lab
• Snow maps from NOAA via FTP site
• Transition to Operations, utilize the NOAA NESDIS operational 24/7 ADDE servers to ingest satellite and model data
• Code Modularization (R. Palikonda)
- satellite modules for GOES (8-12), MSG, AVHRR, MODIS
- sounding module for RUC, ECMWF, GFS/AVN
- helps isolates sections of the algorithm to improve cloud mask, corr-k, cloud parameterization, etc.
- most modules are written in C
• Main driver program is in McIDAS environment
• Cloud algorithms are written in Fortran
• Data inputs and outputs utilizes McIDAS API
• Approximately 75,000 lines of code
Current Computer Resources Used for ASAP
• SGI Orgin 3800 with 40 CPUs
• Only 8 CPU is available for Icing (other CPUs are used by CERES & CALIPSO project)
Limitation of Current Computer Resources
• Run code every half hour during the day and hourly at night
• Process GOES-West (10) at 8km res: ~30 mins
• Process GOES-East (12) at 8km res: ~35 mins
Need Additional Resources
• Run at full 4km resolution every 15 mins
• Would take ~70 min to process GOES-West and ~80 min for GOES-East at full resolution
• Project Columbia Supercomputer offers needed resource
Technical Hardware Description
Full Resolution 80 min process should be reduced to 9-12 mins
This research was support by the NASA Aviation Safety Program.