parxxl: benchmark of a new cellular application ... · supélec – loria – potenza university:...

Supélec – Loria – Potenza University:(S. Vialle, J. Gustedt, A. De Vivo)

parXXL: Benchmark of cellular applications

parXXL:

Benchmark of a new cellular application environment for the Grid

GdX meeting - December 21, 2005 - Lyon

A. De Vivo, J. Gustedt, S. Vialle


2


Client machine: comfortablefine grained development env.

Distributed server:coarse grained arch.

Device control – IO data

Project overview

Software suite parXXL:

Interactive debugging andvisualization tool of fine grainedsystems on distributed architecture(Supélec & System@tic)

→ Minimize (Tdev+∑Texec)

par::cellnetpar::cellpar::cntrlpar::mempar::syspar::cpp

par::bench


3


Software architecture

par::cellnet

par::cell

par::cntrl

par::mem

par::sys

par::cpp

Fine grained programming model

Cellular network creation library

Coarse grained comm. & runtime control

Memory management and data abstraction

High-level Posix system interface

Optimized C++ toolbox

ParCeL

SSCRAP


4


Programming model

1 1 1 11 1 1 1

32

Fine grained parallelism Coarse grained parallelism

parXXL

Cell netcreation

Cell net computation

Cell comm.

Cell net evolution

BSP super-steps- model of ParCeL- model of SSCRAP


5


Programming model: Cellular net creation

TCP-ClientWorker

Worker

TCP-Server& Worker

Worker

Worker

Cell net creation

Loop: Cell net computationCell communicationsCell net update

Cell net delete

User codeor optimized par::cellnetroutines for standard cellular networks


6


A cell:

Cell Parameters Cell Variables

Cell input channels Cell output channels

Cell external IO mechanisms

//Init function………

//Iter function………

//Term function……… User

code

Programming model: Cell computation


7


Program ex: Cubic relaxation

// - Define a ParCeL cubic cell networkT_CubeCellNet theCellNet(); // par::cellnet

// - Init the cell net variable (funtion of the pgm arguments)theCellNet.Init(argc, argv, &p6ProcInfo);

// - Define and create the cell networktheCellNet.CubeCellLocalizedDefAndCreate(&p6ProcInfo);// - Define and install the cell parameterstheCellNet.CubeCellParamDefAndInstall(&p6ProcInfo);// - Connect the cell of the cell nettheCellNet.Connection(&p6ProcInfo);

// - Relaxation loop: loop of net computation and output updatefor (p6Size_t cycle = 0; cycle < theCellNet.CycleNb; cycle++)

theCellNet.RelaxOneStep(P6FORWARD,0,&p6ProcInfo);

// - Stop the ParCeL processes (on each processor)p6ProcInfo.p6_net_proc_halt(); // par::cell

User code: … before a new API


8


Program ex: Cubic relaxationCentralized cell creations:

Distributed and localized cell creations

User code User codeAdvanced user code /

par::cellnet

par::cellnet

Server process

Centralized & localizedcell creation:

t

par::cellnet


9


Benchmark: Cellular net creation


10


Benchmark: Cellular net computation


11


Benchmark: Cellular net computation


12


Conclusion

• Operational – First benchmarks in December 2005.

• First real user application planned for January 2006.

• Next development steps of parXXL planned for february 2006.


13


parXXL:

Benchmark of a new cellular application environment for the Grid

Questions?

parxxl: benchmark of a new cellular application ... · supélec – loria – potenza university:...

Documents