Basic HTML version of Foils prepared 19 September 98

Foil 78 Jacobi Iteration: send guard values

From MPI Message Passing Interface Computational Science for Simulations -- Fall Semester 1998. by Geoffrey C. Fox, Nancy McCracken
1 DO WHILE (err > tol)
  • CALL MPI_SEND(u(1,1),
  • nxblock,MPI_REAL,nbrleft,0,comm2d, ierr)
  • CALL MPI_RECV(u(1,nylocal),
  • nxblock,MPI_REAL,nbrright,0,comm2d, ierr)
  • CALL MPI_SEND(u(1,nylocal),
  • nxblock,MPI_REAL, nbrright,1,comm2d, ierr)
  • CALL MPI_RECV(u(1,0),
  • nxblock,MPI_REAL,nbrleft,1,comm2d, ierr)
  • CALL MPI_SEND(u(1,1),
  • 1,rowtype,nbrtop,2,comm2d, ierr)
  • CALL MPI_RECV(u(nxlocal,1),
  • 1,rowtype,nbrbottom,2,comm2d, ierr)
  • CALL MPI_SEND(u(nxlocal-1,1),
  • 1,rowtype,nbrbottom,3,comm2d, ierr)
  • CALL MPI_RECV(u(0,1),1,rowtype,nbrtop,3,comm2d, ierr)
in Table To:

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