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From: Wa-Kun Lam (rexchaos_at_[hidden])
Date: 2003-09-26 05:10:22


hi all,
  After some calculation with mpi, I call the gnuplot(with an interface)
to plot the result. However, if I run the program over a multinode
network, it always complain that I haven't set the DISPLAY variable.
However, if I run the program in a local machine, nothing goes wrong.
It implies that the setting in a single local machine is all right.

Here is my code

...
if (rank==0)
{
  // plot the resutl
}
...

Notice that I only do the plotting in rank 0.