Concurrent Single-Executable CCSM with MPH Library

Technical Report · Mon May 15 04:00:00 EDT 2006

DOI:https://doi.org/10.2172/888986· OSTI ID:888986

He, Yun; Ding, Chris H.Q.

Community Climate System Model (CCSM) is currently a multi-executable system based on the Multi-Program Multi-Data (MPMD) mechanism. Each component is compiled into a separate executable. MPMD is normally cumbersome in usage and vendor support is sometimes limited or completely unavailable, such as on BlueGene/L. Also smaller groups and institutions would like to run CCSM locally, rather than relying on large computer centers. So, single-executable CCSM is under request. We are developing a multi-executable and single-executable coexisting version of CCSM. In single-executable, each component is organized as a subroutine, which is called from a master program. Different components run simultaneously. This is accomplished by redesigning the top level CCSM structures using the Multi-Program Handshaking (MPH) library.

• Research Organization: Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
• Sponsoring Organization: USDOE Director. Office of Science. Office of AdvancedScientific Computing Research. Office of Biological and EnvironmentalResearch
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 888986
• Report Number(s): LBNL--60596; BnR: KP1201010
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS
C CODES
CLIMATE MODELS
COMPUTERIZED SIMULATION
MEMORY MANAGEMENT
Single-executable CCSM MPH