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<div align="left"><font face="Arial"><span style="font-size:10pt">Hi,</span></font></div>
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<div align="left"><font face="Arial"><span style="font-size:10pt">I'm implementing at the moment dynamic process management in
MPICH2 for Infiniband.</span></font></div>
<div align="left"><font face="Arial"><span style="font-size:10pt">Trying to develop the MPI_COMM_SPAWN I encounte on a problem.
To establish communication over Infiniband between the father and </span></font></div>
<div align="left"><font face="Arial"><span style="font-size:10pt">the son, the father needs connectinformation from the son and also the
son needs information from father. </span></font></div>
<div align="left"><font face="Arial"><span style="font-size:10pt">Is there a mechanism in MPICH2 to communicate between father and
son? And how can I synchronize the 2 processgroups?</span></font></div>
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<div align="left"><font face="Arial"><span style="font-size:10pt">Thanks,</span></font></div>
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<div align="left"><font face="Arial"><span style="font-size:10pt">Patrick Sonntag</span></font></div>
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