Applications and Middleware

mewstennisSoftware and s/w Development

Nov 4, 2013 (3 years and 10 months ago)

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© Geodise Project, University of Southampton, 2003.

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



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


Globus Toolkit



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

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

Matlab commands allow the user to exploit Globus resources

© 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

nullConstraint()

NACA_objfun()

Metropolis compute resource

FLUENT

GAMBIT

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