Interoperability of Virtual Organizations
on Complex Semantic Grid
www.InteliGrid.com
Parametric studies for the AEC
domain using InteliGrid platform
M. Dolenc and R. Klinc
matevz.dolenc@fgg.uni-lj.si
IST-2004-004664
University of Ljubljana
Faculty of Civil and Geodetic Engineering
Institute of Civil Engineering, Earthquake Engineering and Construction IT
Chair of Construction Informatics
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007

Content
www.InteliGrid.com
Overview of the InteliGrid project

High throughput computing (HTC)

Overview

DRM systems – products overview

Use case: parametric studies

Performance analysis / benefits

Conclusions and future work

EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

About InteliGrid project
www.InteliGrid.com
September 2004 – April 2007 (32 months)

Effort 360 person months

EU funding 2.100.000 € (STREP)

Partners 9 (5 industries) / 6 countries

Research/academic

organisations
Infrastructure software

providers
Vertical software

providers and ASPs
Industrial associations

Characteristic user

EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

InteliGrid context
www.InteliGrid.com
European large scale

engineering industries
... huge number of

experts
... wide a range of

software/hardware
resources
... dynamic virtual

organization (VO)
... sharing information

InteliGrid is building

information
infrastructure
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

InteliGrid layers
www.InteliGrid.com
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

InteliGrid technologies
www.InteliGrid.com
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

InteliGrid architecture
www.InteliGrid.com
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

InteliGrid computing components
www.InteliGrid.com
InteliGrid portal (GridSphere)

Authorization service (GAS)

Broker service (Condor, GRMS, OpenDSP)

Other:

Document management integration

Ontology service integration

EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

InteliGrid HPC/HTC portlet
www.InteliGrid.com
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

InteliGrid computing components
www.InteliGrid.com
InteliGrid portal (GridSphere)

Authorization service (GAS)

Broker service (Condor, GRMS, OpenDSP)

Other:

Document management integration

Ontology service integration

EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Available computer resources
www.InteliGrid.com
UNIX® servers are actually \"serving\"

something less than 10 percent of the time.
Most PCs do nothing for 95 percent of a

typical day.
Imagine ...

... an airline with 90 percent of its fleet on the ground

... an auto maker with 40 percent of its assembly

plants idle
... a hotel chain with 95 percent of its rooms

unoccupied
Source:
http://www-128.ibm.com/developerworks/grid/newto/index.html
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Available computer resources
www.InteliGrid.com
Almost every organization is sitting atop

enormous unused computing capacity.
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

HPC vs HTC
www.InteliGrid.com
HPC – High Performance Computing

Floating point operations per second (FLOPS)

static environments (dedicated clusters)

single large scale problems (huge memory req., ...)

protocols: MPI, PVM, ...

HTC – High Throughput Computing

environment that can deliver large amounts of

processing capacity over long periods of time
dynamic environments (non-dedicated comp. resources)

parallel independent jobs, parametric studies, ...

solutions: Condor, Sun N1 Grid Engine, SETI@Home, ...

EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

HTC DRM systems (a selection)
www.InteliGrid.com
Condor

http://www.cs.wisc.edu/condor

OS: Windows, Linux, Mac, ...

great support for dynamic environments, source

available
Sun Grid Engine

http://gridengine.sunsource.net

OS: Solaris, Linux, ...

open source

Xgrid

http://www.apple.com/acg/xgrid.html

OS: MacOS X

graphical user interface, easy configuration

EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Condor pool at UL FGG
www.InteliGrid.com
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Parametric studies in
earthquake engineering
www.InteliGrid.com
Past/present

single limit state deterministic techniques

Future

multiple performance objectives

probabilities of different socio-economic decision

variables
decision variables relate performance of a structure to

decision making (involve: cost of repair, indirect cost
of down time, loss of lives, ...)
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Case study: IDA Analysis
www.InteliGrid.com
IDA –

Incremental
Dynamic Analysis
... determining

the relation
between the
engineering
demand
parameter and
seismic intensity
measure.
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

IDA Analysis ...
www.InteliGrid.com
v DV w =∫∫ ∫ G DV ∣DM  w∣ z ∣dG DM ∣EDP  z∣ y ∥dG EDP∣IM  y∣x ∥dλ IM  x ∣dxdydz
zyx
More info:
D. Vamavatsikos and C.A. Cornell, Incremental Dynamic Analysis, Earthquake
Engineering and Structural Dynamics, 31(3), 491-514, 2002.
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

IDA analysis workflow
www.InteliGrid.com
Number of analyses

different structural models

(loss, capacity, demand,
seismic hazard)
several ground motion

records
multiple levels of intensity

IDA workflow

(1)numerical modelling
(2)selection of earthquakes
(3)job descriptions
(4)non-linear analysis
(5)results analysis
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

IDA analysis workflow
www.InteliGrid.com
Number of analyses

different structural models

(loss, capacity, demand,
seismic hazard)
several ground motion

records
multiple levels of intensity

IDA workflow

(1)numerical modelling
(2)selection of earthquakes
(3)job descriptions
(4)non-linear analysis
(5)results analysis
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Performance analysis
www.InteliGrid.com
Number of analyses: 280

Average analysis time: ~13min

Number Analysis Speed-up
of comp. time [hours] factor
1 61.3 1
5 14.7 4.17
10 7.1 8.63
25 2.5 24.52
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Performance analysis
www.InteliGrid.com
Number of analyses: 280

Average analysis time: ~13min

Number Analysis Speed-up
of comp. time [hours] factor
1 61.3 1
5 14.7 4.17
10 7.1 8.63
25 2.5 24.52
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Conclusions
www.InteliGrid.com
InteliGrid platform

European large scale engineering industries

Dynamic virtual organizations

Product life-cycle management

DRM systems

HPC vs. HTC

Using available computer resources

Solutions: Condor, Sun N1 Grid Engine, ...

Benefits: near linear reduction of computing time (for

parametric studies)
Challenges: (1) submit machine must stay connected

during the execution, (2) bulk jobs, ...
EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Future work (1)
www.InteliGrid.com
Complete workflow

post IDA results analysis

automatic data selection

Generalize for any

parametric simulation
graphical user interface

release as open source

EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform

Future work (2)
www.InteliGrid.com
Remote access

WS / DRMAA (OpenDSP DRMAA implementation)

enable discontinued use

EUROPEAN COMPUTING CONFERENCE, Vouliagmeni, Athens, GREECE, Sept2007 Parametric studies for the AEC domain using InteliGrid platform