<p>We are facing another problem, <br>whenever we try to run mpirun command (which was working perfectly before) we get this error:</p>
<div><em><font color="#333333">usr/local/bin/mpdroot: open failed for root's mpd conf filempdtrace (__init__ 1190): forked process failed; status=255</font></em></div>
<p><font color="#333333"><font color="#000000">is it anything to do with mpich? how can we undo it?</font></font></p>
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<div class="gmail_quote">On Tue, Apr 21, 2009 at 9:12 PM, Dave Goodell <span dir="ltr"><<a href="mailto:goodell@mcs.anl.gov">goodell@mcs.anl.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">There are two problems here. The first is that you do not have an .mpd.conf file setup. Doing what mpd tells you to do when you run it will fix this.<br>
<br>The second is that you are trying to run mpd as root. This is possible and supported, but not really recommended unless you know what you are doing. See section 5.1.6 of the MPICH2 Installer's Guide [1] for help with running mpd as root.<br>
<br>-Dave<br><br>[1] <a href="http://www.mcs.anl.gov/research/projects/mpich2/documentation/files/mpich2-1.0.8-installguide.pdf" target="_blank">http://www.mcs.anl.gov/research/projects/mpich2/documentation/files/mpich2-1.0.8-installguide.pdf</a>
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<div class="h5"><br><br>On Apr 21, 2009, at 10:18 AM, Ankush Kaul wrote:<br><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">After installing mpich2 according to the steps given in the README file it asks to test using<br>mpd &<br>
mpdtrace<br>mpdallexit<br><br>mpd & gives output :<br>[2] 21367<br>[root@ccomp2 etc]# configuration file /etc/mpd.conf not found<br>A file named .mpd.conf file must be present in the user's home<br>directory (/etc/mpd.conf if root) with read and write access<br>
only for the user, and must contain at least a line with:<br>MPD_SECRETWORD=<secretword><br>One way to safely create this file is to do the following:<br> cd $HOME<br> touch .mpd.conf<br> chmod 600 .mpd.conf<br>and then use an editor to insert a line like<br>
MPD_SECRETWORD=mr45-j9z<br>into the file. (Of course use some other secret word than mr45-j9z.)<br><br>and mpdtrace gives error :<br>/usr/local/bin/mpdroot: open failed for root's mpd conf filempdtrace (__init__ 1190): forked process failed; status=255<br>
<br>this is the forst time i am doing a project in linux clustering n cant figure out What is the problem here?<br></blockquote><br><br></div></div></blockquote></div><br>