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.TH MPE_Open_graphics 4 "1/31/1997" " " "MPE"
.SH NAME
MPE_Open_graphics \- (collectively) opens an X Windows display
.SH SYNOPSIS
.nf
#include <stdio.h>
#include "mpe.h"
int MPE_Open_graphics( handle, comm, display, x, y, w, h, is_collective )
MPE_XGraph *handle;
MPI_Comm comm;
char display[MPI_MAX_PROCESSOR_NAME+4];
int x, y;
int w, h;
int is_collective;
.fi
.SH INPUT PARAMETERS
.PD 0
.TP
.B comm
- Communicator of participating processes
.PD 1
.PD 0
.TP
.B display
- Name of X window display. If null, display will be taken from
the DISPLAY variable on the process with rank 0 in 'comm'. If that is
either undefined, or starts with w ":", then the value of display is
``hostname``:0
.PD 1
.PD 0
.TP
.B x,y
- position of the window. If '(-1,-1)', then the user should be
asked to position the window (this is a window manager issue).
.PD 1
.PD 0
.TP
.B w,h
- width and height of the window, in pixels.
.PD 1
.PD 0
.TP
.B is_collective
- true if the graphics operations are collective; this
allows the MPE graphics operations to make fewer connections to the
display. If false, then all processes in the communicator comm will
open the display; this could exceed the number of connections that your
X window server allows. Not yet implemented.
.PD 1
.SH OUTPUT PARAMETER
.PD 0
.TP
.B handle
- Graphics handle to be given to other MPE graphics routines.
.PD 1
.SH NOTES
This is a collective routine. All processes in the given communicator
must call it, and it has the same semantics as 'MPI_Barrier' (that is,
other collective operations can not cross this routine).
.SH LOCATION
mpe_graphics.c
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