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Given by E. Akarsu,G. Fox,W. Furmanski, T. Haupt, L. Mitas at Alliance 98 NCSA Illinois on April 27-29 98. Foils prepared 22 May 98
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Summary of Material
| We describe briefly Quantum Simulation as a High Performance Application |
We describe how WebFlow with its 3 tier architecture can support
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Quantum Simulations using WebFlow - a High Level Visual Interface for Globus
WebFlow meets Globus Logo
Quantum Simulation Application Example
Quantum Simulations problem description
Solution using the WebFlow
In particular, for Quantum Simulations
Quantum Simulations using the WebFlow
Sample WebFlow Session on Quantum MonteCarlo
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Summary of Material
HTML version of Basic Foils prepared 22 May 98 
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| E. Akarsu, G. Fox, W. Furmanski, T.Haupt, L. Mitas |
HTML version of Basic Foils prepared 22 May 98 
Full HTML Index
HTML version of Basic Foils prepared 22 May 98
Full HTML Index
HTML version of Basic Foils prepared 22 May 98
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| A chain of high performance applications is run repeatedly for different data sets |
| Each application can be run on several different platforms, depending on the problem size and the load of the machines |
| Input and output files must be moved between the machines, as needed |
| Output files are visually inspected by the researcher; if necessary applications are rerun with modified input files |
| Typically, output files must be converted to a different format before using them as input to the next application in the chain |
HTML version of Basic Foils prepared 22 May 98
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| WebFlow front-end for visual authoring: drag-and-drop composition of meta-applications from compute-web nodes. |
| WebFlow middle-tier implementing distributed object technologies in Java (platform independent, including NT-workstations). The implementation is based on industry standards: currently servlet extended httpd servers, and evolving towards CORBA base |
| WebFlow back-end based on commodity software components, in particular low level matacomputing toolkit Globus for HPCC |
HTML version of Basic Foils prepared 22 May 98
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| Use WebFlow editor to visually compose the chain |
| Use integrated with the WebFlow metacomputing directory services (MDS) of Globus to identify resources |
| Use WebFlow proxies to Globus resource allocation manager (GRAM) to allocate the resources, including authentication |
| Use high performance data transfer mechanisms of Globus (GASS, RIO) |
| Use commodity DBMS or LDAP services to identify and retrieve data set as needed. |
HTML version of Basic Foils prepared 22 May 98
Full HTML Index
HTML version of Basic Foils prepared 22 May 98
Full HTML Index