Conversion of Distributed Planetary Ring Simulation from C to Java Jason Leezer Research Advisors: D

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Conversion of Distributed Planetary Ring
Simulation from C to Java Jason
LeezerResearch AdvisorsDr. Lewis Dr.
MassingillComputer Science
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My Goal

• Convert a preexisting distributed Planetary Rings
  Simulation from C to Java.
• Implement Load Balancing and Fault Tolerance
• See how it compares to C.

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Reasons To Convert

• It will be easy to implement load balancing and
  fault tolerance
• Java is a strong object oriented language that
  would allow us to easily expand and run more
  complex simulations
• A Java version would be easy to integrate into
  the open source analysis package SwiftVis.

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Why?

• 1) Load Balancing

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Formula for calculating new boundary M1 took T1
to do X M2 took T2 to do 1 X (where X is the
fraction of the workload between them) M1 does
X/T1 and M2 does (1-X)/T2 X T1/X
(1-X)T2/(1-X) X T2X/( T1(1-X) T2X)
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Why else?
2) Fault Tolerance
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Final Simulation Architecture
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Load Balancing Results
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Heterogeneous ClustersWithout Load Balancing
Machines 2 - 2.8Ghz processors 1 - 2.0 Ghz
processor
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Heterogeneous ClustersWith Load Balancing
Machines 2 - 2.8Ghz processors 1 - 2.0 Ghz
processor
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Thank You
Thank you Dr. Lewis and Dr. Massingill This
research was funded by a grant from the NSF. All
plots produced with SwiftVis. Image of Saturn
Ring was taken by the Casini Imaging Team
(http//ciclops.org)