Job submission and management through web services: the experience with the CREAM service

Abstract

Abstract. Modern Grid middleware is built around components providing basic functionality, such as data storage, authentication, security, job management, resource monitoring and reservation. In this paper we describe the Computing Resource Execution and Management (CREAM) service. CREAM provides a Web service-based job execution and management capability for Grid systems; in particular, it is being used within the gLite middleware. CREAM exposes a Web service interface allowing conforming clients to submit and manage computational jobs to a Local Resource Management System. We developed a special component, called ICE (Interface to CREAM Environment) to integrate CREAM in gLite. ICE transfers job submissions and cancellations from the Workload Management System, allowing users to manage CREAM jobs from the gLite User Interface. This paper describes some recent studies aimed at assessing the performance and reliability of CREAM and ICE; those tests have been performed as part of the acceptance tests for integration of CREAM and ICE in gLite. We also discuss recent work towards enhancing CREAM with a BES and JSDL compliant interface.

The next-generation ARC middleware

“…In order to be standardcompliant, ARC has moved from the extended Resource Specification Language [18] job description to Job Submission Description Language [19]. It has a built-in job description translator and is capable of submitting jobs to both the native ARC job execution services, as well as to the gLite's CREAM [20] and to UNICORE [21] execution services. These are the two main interoperability targets for ARC.…”

Standards-Based Job Management in Grid Systems

“…CREAM [1] is a Web Service-based job submission and management service being developed for the gLite middleware [9]. We show in Figure 3 a high-level view of the main architectural components of CREAM.…”

“…• the BES specification [19], an OGF standard which addresses job submission and management. The implementation of the BES specification in the gLite Computing Resource Execution And Management (CREAM) Computing Element [1] will be discussed in Section 2.…”