Transcript Slide 1
Applications and Middleware Hakki Eres, Fenglian Xu & Graeme Pound © Geodise Project, University of Southampton, 2003. Geodise compute toolbox • Matlab allows engineers to script complex workflows required by CFD/optimisation • Geodise compute toolbox is a client to Globus v2.0 resources • Matlab functions which utilise the Java CoG Globus client • To be familiar to users these functions are consistent with the Matlab syntax © Geodise Project, University of Southampton, 2003. Geodise compute toolbox Matlab Globus Toolkit • • • • • Familiar, and mature, environment Cross platform (Windows/Linux) Allows scripting Seamless integration of Java Java CoG kit • • • • • Globus client implemented in Java Under development (v 0.9.13) GridFTP client (v 0.9.14) Robust with an active user base http://www.globus.org/cog/java • • • Version 2.0 features – Data transfer - GridFTP – Monitoring & Discovery -MDS – Job submission - GRAM – Security - GSI Widely deployed Currently no windows client Version 3.0 will be an OGSA implementation © Geodise Project, University of Southampton, 2003. Geodise compute toolbox Matlab commands allow the user to exploit Globus resources gd_certinfo() Returns info about the user’s certificate gd_createproxy() Creates a Globus proxy certificate for the user’s credentials gd_destroyproxy() Destroys the local copy of the user's Globus proxy certificate gd_getfile() Retrieves a remote file using GridFtp gd_jobkill() Kills a Globus GRAM specified by job handle gd_jobpoll() Queries the status of a Globus GRAM job until complete gd_jobstatus() Gets the status of a Globus GRAM job specified by job handle gd_jobsubmit() Submits a compute job to a Globus GRAM job manager gd_listjobs() Returns all the job handles belonging to the user gd_proxyinfo() Returns information about the user's proxy certificate gd_proxyquery() Queries whether a valid proxy certificate exists. gd_putfile() Puts a remote file using GridFtp © Geodise Project, University of Southampton, 2003. Running Fluent on a Globus resource © Geodise Project, University of Southampton, 2003. Querying Fluent © Geodise Project, University of Southampton, 2003. Options optimisation package Matlab (local) OPTIONS Mex function Metropolis compute resource GAMBIT FLUENT nullConstraint() NACA_objfun() Geodise compute toolkit GRAM job submission/ GridFTP file transfer © Geodise Project, University of Southampton, 2003. NACA Gambit/Fluent Optimisation • Fluent CFD solver • Single design variable: (angle of attack) • Objective function: Lift/drag ratio • Dynamic hill climbing • Optimum at the upper limit for design variable • Matlab structure returned © Geodise Project, University of Southampton, 2003. Jython scripting • • • • Python is an interpretive scripting language Jython is a Java implementation of Python Free and Open Source alternative to Matlab Code reuse from the Geodise compute and database toolboxes • Possible uses for scripting on the server © Geodise Project, University of Southampton, 2003. Fluent Remote Simulation Facility • Commercial ‘power by the hour’ solutions may make sense to small businesses • One example is the Fluent Remote Simulation Facility providing CFD on demand © Geodise Project, University of Southampton, 2003. Notification by SMS & email • Exploiting SMS in Grid environment • Two-way communication – Send notifications to a mobile user – User can steer or kill a computation by replying to a message – Relieve users from being bound to their desktops • Using SMTP to send images and large files • Plug-n-play into any Grid-enabled environment © Geodise Project, University of Southampton, 2003. Notification by SMS & email © Geodise Project, University of Southampton, 2003.