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Introduction to Parallel Processing

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vdwarf2.ee.bgu.ac.il qstat. Job id Name User Time Use S Queue ... wall clock time = 0.010767. vdwarf2.ee.bgu.ac.il The New Top500 list ???? ????? ... – PowerPoint PPT presentation

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Title: Introduction to Parallel Processing


1
Introduction to Parallel Processing
  • Lecture 5
  • 18/6/2008
  • Dr. Guy Tel-Zur

2
Topics
  • Torque
  • The new Top500 list ???? ?????
  • Pipelined Computations
  • Synchronous Computations
  • MPE profiling and graphics.
  • PVM - A short introduction and Dynamic Process
    Creation
  • Final Projects

3
?????? ??????? ???????
  • ?????? ???? ??????? ??????!
  • ????? ????? ???? ?' ????? ?????? ?????
    ?????????
  • ????? ??? ???? ????? ????? ?????? ????? ??
    ??????
  • ????? ????? ????? ????? ???? ??? ???
  • ???????? ???? ????? ??????

4
Start using Torque
  • PBS Tutorial

vdwarf2.ee.bgu.ac.ilgt more ./cpi.pbs
!/bin/bash PBS -N cpi PBS -q default PBS
-l nodes4ppn1 echo Start printing echo The
working directory is echo PBS_O_WORKDIR cd
PBS_O_WORKDIR /usr/local/bin/mpirun -np 4
-machinefile ./machinefile ./cpi
5
PBS
vdwarf2.ee.bgu.ac.ilgt qsub ./cpi.pbs
30.vdwarf1.ee.bgu.ac.il
vdwarf2.ee.bgu.ac.ilgt qstat Job id
Name User Time Use S
Queue ------------------------- ----------------
--------------- -------- - ----- 30.vdwarf1
cpi tel-zur
000000 C batch
6
PBS
vdwarf2.ee.bgu.ac.ilgt more ./cpi.o30 Warning no
access to tty (Bad file descriptor). Thus no job
control in this shell. Start printing The
working directory is /users/agnon/misc/tel-zur/mpi
pi is approximately 3.1416009869231249, Error is
0.0000083333333318 wall clock time
0.010767 vdwarf2.ee.bgu.ac.ilgt
7
The New Top500 list ???? ?????
  • http//www.top500.org
  • ISC08 Dresden
  • The list will be released on 18/6, so luckily we
    will have a look at it during the class.

8
PP Performance Evaluation
  • Lets analyze the following example
  • http//riebecca.blogspot.com/2007/12/supercomputin
    g-course-example.html

9
PVM
10
PVM
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