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developerWorks: The Master Managed Job Factory Service (MMJFS)

Jun 01, 2004, 05:30 (0 Talkback[s])
(Other stories by Vladimir Silva)

"The Globus Resource Allocation Manager (GRAM) is at the core of the Globus remote program execution infrastructure. GRAM allows you to run jobs remotely, using a set of WSDL client interfaces to submit, monitor, and terminate a job. A job request is written in the resource specification language (RSL) and processed by the Managed Job Service.

"In GT3, GRAM is divided into two big containers: the Master Hosting environment (MHE) and the User Hosting environment (UHE). The MHE is in charge of authorizing the GRAM request against the grid-map file and starting or pinging the UHE. It then uses a redirector to forward the request to the UHE process which, in turn, creates a Managed Job Service (MJS). MJS submits the job into the back-end scheduling system.

"Both environments interact in a typical GRAM request. This interaction is fully explained by Globus on the walk-though of typical GRAM request found at GT3 GRAM..."

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