Multi threading

prace

super computer infrastructer...

desislava ivanova

Prace

• дава достъп до ресурсите Prace
  • уравниение шрьодингер...
  • 1024*4 PowerPC процесори - българския компютър ( Blue Gene/P ...(в България), 27.85tflops

http://www.prace-ri.eu/ ,

Ресурси които имаме

• Blue Gene ...(Blue Gene/P) в България
• Jugene (Blue Gene/P)
• Curie
• Hermit
• SuperMUC
• CRAY XE6
• Jurora
• NIIFI - ClusterGrid
• CINECA

Членове

• Аустриа
• ... mnogo evropejski dyrzhavi

Za da se uchastva trqbwa da dokazhesh, che imash zadacha , koqto izpolzwa 512 qdra, s obshto choveshko s znachenie...

Видове

Финна гранулизация - 1 whodno izhodna система - много ядра Финна гранулна паралезация

Message packing interface - gruba paalezaciq ...

Grid computing, Cloud Computing vs Parallel Computing....

isomorphna sistemna mrezha ... nachin na kluchvane na otdelnite vyzli Onet++

6Dimensional topologia

Klysteri

• Homogenni
• Nehomogenni

BlueVision

Bylgarska ideq -- analiz na satelitni snimki -- prognoza za osolenost na pochvi, predvizhdane na pozhari, zamyrseni vodi, navodneniq ... - na bazata na multi spektralen analiz

Диаграма на Гант

latenstnost propuskatelna sposobnost

pattern ...

fleet

YARC chip - http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CDkQFjAC&url=http%3A%2F%2Fwww.ece.gatech.edu%2Fresearch%2Flabs%2Fesl%2Fclasses%2FECE6101%2FFor6101-1%2Fyarc.ppt&ei=8s1-T52YEorFtAat8fTPBA&usg=AFQjCNGWBp5mq_fLa4qThFgnbODlNd8Z7w

SAN - system area network hibriden dizajn - 3d torus+fat Tru

Principles and Practices of Interconnection Networks (The Morgan Kaufmann Series in Computer Architecture and Design) [Hardcover] William James Dally

routing algorithm <-> topology (razmer na paketa)

store forward .... run hole .... gossip, reduced ... testwane traffic , collective network, 3D -dimensionall tools toroid, Low latency global Barier and Interupt

Dekompoziciq

Randevu

komunikaciq point to point Kontragent <=> processor

Kolektiwna komunikaciq

• Broadcast, ne personizirana komunikaciq (one to all)
• All to All
• Gossiping - personizirana globalna komunikaciq (naj tezhyk rezhim)
• Redukciq - vsichki izprashtat kym edin (root stava goreshta tochka)

Mrezhi

toroid debelo dyrvo

Wsqka programa nalaga rezhim na komunikaciq. Мрежата си има максимална възмозхност. Предложен -“ Приет трафик (офферед delivered)

Devide and Conquer

KOmpoziciq и декомпозиция

• Coarse granularity - груба гранулация - подход с message passing MPI
• Обща памет => финна гранулациия OpenMPI
• Хибридно -MPI OpenMpi

...

MPI

• MPI_Init
• MPI_Comm_Rank
• MPI_Comm_Size
• MPI_Finalize -

• MPI_Barier -
• MPI_Wtime - време на изпълнение на програмата
• MPI_Wtick - ----------//-------------------

 
/* C Example */
#include <stdio.h>
#include <mpi.h>


int main (argc, argv)
     int argc;
     char *argv[];
{
  int rank, size;

  MPI_Init (&argc, &argv);	/* starts MPI */
  MPI_Comm_rank (MPI_COMM_WORLD, &rank);	/* get current process id */
  MPI_Comm_size (MPI_COMM_WORLD, &size);	/* get number of processes */
  printf( "Hello world from process %d of %d\n", rank, size );
  MPI_Finalize();
  return 0;
}

Мессаге пассинг модел

системна мрежа - full connectivity