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<DIV>From <EM>Ralph's</EM> mention :</DIV>
<DIV><FONT face="Times New Roman"><EM>I have tried running this pgm on <U>a
couple of custers</U> and could not<BR>reproduce the problem, i.e. all stderr
print appears instantly.</EM></FONT></DIV>
<DIV><EM><FONT face="Times New Roman"></FONT></EM> </DIV>
<DIV><FONT face="Times New Roman">I remembered some hosts were not set up
by myself.</FONT></DIV>
<DIV><FONT face="Times New Roman">Hence, </FONT><FONT face="Times New Roman">i
divided them into 2 groups according to the constructors.</FONT></DIV>
<DIV><FONT face="Times New Roman">Then tested "mpiexec -n 4 cpi"
again.</FONT></DIV>
<DIV><FONT face="Times New Roman">The first group could run "mpiexec -n 4
cpi" very quickly.</FONT></DIV>
<DIV><FONT face="Times New Roman">However, the problem i stated still happened
on the second group of hosts.</FONT></DIV>
<DIV><FONT face="Times New Roman">After corrected <STRONG><EM><FONT
size=4>/etc/hosts</FONT></EM></STRONG> in the hosts of the second group, two
groups can response very quickly.</FONT></DIV>
<DIV><FONT face="Times New Roman">i will continue the other test...</FONT></DIV>
<DIV><FONT face="Times New Roman"></FONT> </DIV>
<DIV><FONT face="Times New Roman">Thank everyone who ever thought
about my question.</FONT></DIV>
<DIV><FONT face="Times New Roman"></FONT> </DIV>
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