cfdgridaa

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Building a CFD Grid Over

ThaiGrid Infrastructure Putchong Uthayopas, Ph.D

Department of Computer Engineering,

Faculty of Engineering,

Kasetsart University, Thailand

Email: [email protected]

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Introduction Computation Fluid Dynamics (CFD) is a

study of fluid behavior by using numerical

technique that allows user to analyze

Fluid Flow, Heat Transfer and OthersRelated Phenomena.

CFD are widely used in industries for. Automotive design, Aerospace design,

Turbo machinery design, and muchmore...

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CAMETA ProjectComputer Aided Mechanical Engineering

Technology and Application

Collaboration among 3 researchlaboratories

CFD lab at SUT, CML at KU and PRG at

KU Goal

Explore how to apply advanced CFDanalysis to solve industry problems

Develop advanced CFD techniques ,algorithms, and software

Explore the use of Beowulf cluster andparallel processing to solve large andcomplex CFD problem

Partly funding from NECTEC

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CAMETA Software

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Software Architecture Client/Server

Client

GUI

Sequential Grid generation, Solvers

SCV Visualization Tool

Servers

Parallel 3D grid generation

Parallel CFD solvers 2D laminar and Turbulence flow

Task are pushed to server using aremote procedure technology called

ACI (Active Cluster Interface)developed by us

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Result of Parallel Grid

Generation and Solver

Runtime Graph

0.00

1000.00

2000.00

3000.00

4000.00

5000.00

6000.00

7000.00

1 node 2 nodes 4 nodes 8 nodes

Node Number

R u

n t i m e

20 40 60 80 100

Runtime Graph

0.00

5000.00

10000.00

15000.00

20000.00

25000.00

1 node 2 nodes 4 nodes 8 nodes

Node Number

R u

n t i m e

201*101 301*101 401*101 501*101 601*101 801*101

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Prediction Models Optimum Cluster Node

0

2

4

6

8

10

201*101 301*101 401*101 501*101 601*101 801*101

Problem Size

N o d e N u m b e

r

Optimum Cluster Node

Problem Size Optimum Cluster Node

201*101 2.39

301*101 3.58

401*101 4.56

501*101 5.46

601*101 6.25

801*101 8.13

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Some Target

Applications

Design of Air flow in clean room for

complex electronics product

assembly Collaboration with Seagate and

Philips

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Challenges on Grid

Transition

How to create a Virtual Research

organization

Single Virtual Computing Resources

Authorization, Authentication, Security

Mechanism for Transparent Resources

Access

• Computing and Data access

Virtual Collaboration Infrastructure Multi-organizational

Geographically Separated

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2 Layers of Grid

http://images.google.com/imgres?imgurl=www.egr.msu.edu/ece/2%2520people%2520working.JPG&imgrefurl=http://www.egr.msu.edu/ece/prospective/gp/Lab_Information/ece306info.htm&h=395&w=522&prev=/images%3Fq%3Dpeople%2Bworking%26svnum%3D10%26hl%3Den

http://images.google.com/imgres?imgurl=www.ourgangstaffing.com/Images/people-working.jpg&imgrefurl=http://www.ourgangstaffing.com/&h=140&w=210&prev=/images%3Fq%3Dpeople%2Bworking%26svnum%3D10%26hl%3Den

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Building CAMETA

Computational Grid

PIRUN

72 nodes AMATA

16 nodes

Uninet

Thaisarn3

CFD

Beowulf

16 nodes

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Proposed Distributed

Software Architecture

KU

Computing

System

SUT

Computing

System

Globus Netsolve/Ninf

ACI CFD Applications

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Proposed Architecture for Parametric Job Submission

Cluster

Hardware

SCE Cluster

Hardware

SCE Cluster

Hardware

SCE Globus Grid (ThaiGrid)

SCE/GRID Resource Scheduler

JOB JOB JOB JOB JOB Open SCE is a scalable

and integrated cluster

environment

http://www.opensce.org

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Grid Usage Provided uniform security

mechanism across the computing

environment Provide services such as

communication, information, job

staging

Provide mechanism for large scale

data access

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People Grid Based on Access Grid Technology

Infrastructure for multipoint

collaboration over internet Based on IP multicast

Telepresence

Access Grid allows the life live

conversation, collaboration acrossthe participating labs

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Todo Computational Grid

Building basic Globus grid (done)

Install and test netsolve, Ninf

Adapt ACI interface to run on

netsolve

Grid communication service

Develop more solvers that conform to

these standard

Improve grid usability by developing

some software tools

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Todo People Grid

Accelerate the deployment of access

grid among the project partners

Build software tools and infrastructure

that allows easy access grid deployment

Personal and tiny access grid nodes

Accommodate non multicast environment

See Omega project

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Milestone Thaigrid infrastructure : done

Q1:

Evaluation of Netsolve, Ninf Develop ACI on grid

Access launch for all parties

Q2

Convert applications Evaluation

Clean multicast

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Final Remarks Grid is about

People : Education, training is needed

Software infrastructure : still in an infancy

state, too complex for average users,

inflexible.

Network

No Multicast !

Slow, unreliable !

All these need to be solved to get userson the grid

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The End

Any Question

?

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Result of Parallel Grid

Generation

Speedup 2 nodes 4 nodes 8 nodes

20 0.92 1.69 3.06

40 1.11 2.21 4.04

60 1.17 2.27 4.39

80 1.37 2.50 4.80

100 1.20 2.20 4.13

Speedup Graph

0.00

1.00

2.00

3.00

4.00

5.00

6.00

20 40 60 80 100

Data Size

S p e e d u p

2 nodes 4 nodes 8 nodes

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Result of Parallel Solver

Speedup 2 nodes 4 nodes8 nodes

201*101 1.38 2.63 4.98

301*101 1.65 3.00 5.88

401*101 1.71 3.27 6.22

501*101 1.76 3.30 6.54

601*101 1.66 3.23 5.95

801*101 1.37 3.00 5.16

Speedup Graph

0.00

1.00

2.00

3.00

4.00

5.00

6.00

7.00

201*101 301*101 401*101 501*101 601*101 801*101

Data Size

S p e e d u p

2 nodes 4 nodes 8 nodes

cfdgridaa

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