/usr/share/doc/freefem++/examples/examples++-mpi/MPIplot.idp is in freefem++-doc 3.19.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | macro PLOTMPIALL(mesh,Pk, Th, u, plotparm)
{ int ver=verbosity;
verbosity=0;
if(mpirank==0)
{
mesh Thi=Th;
mesh[int] ath(mpisize);
fespace Xh(Thi,Pk);
Xh[int] uh(mpisize);
uh[0][]=u;
ath[0]=Th;
mpiRequest[int] rq(mpisize);
for(int i= 1; i <mpisize;++i)
Irecv(processor(i,rq[i]),ath[i]);
for (int i=1;i<mpisize;++i)
int k= mpiWaitAny(rq);
for (int i=1;i<mpisize;++i)
{ Thi=ath[i];
Irecv(processor(i,rq[i]),uh[i][]);}
for (int i=1;i<mpisize;++i)
int k= mpiWaitAny(rq);
plot(uh,plotparm);
}
else
{
processor(0)<<Th;
processor(0)<<u;
}
mpiBarrier(mpiCommWorld);
verbosity=ver;
return true;
}
//EOM ...
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