[mpich-discuss] Problem with mpich2 installation

[Ankush Kaul]

We are facing another problem,
whenever we try to run mpirun command (which was working perfectly before)
we get this error:
*usr/local/bin/mpdroot: open failed for root's mpd conf filempdtrace
(__init__ 1190): forked process failed; status=255*

is it anything to do with mpich? how can we undo it?



On Tue, Apr 21, 2009 at 9:12 PM, Dave Goodell <goodell at mcs.anl.gov> wrote:

> 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.
>
> 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.
>
> -Dave
>
> [1]
> http://www.mcs.anl.gov/research/projects/mpich2/documentation/files/mpich2-1.0.8-installguide.pdf
>
>
> On Apr 21, 2009, at 10:18 AM, Ankush Kaul wrote:
>
> After installing mpich2 according to the steps given in the README file it
>> asks to test using
>> mpd &
>> mpdtrace
>> mpdallexit
>>
>> mpd & gives output :
>> [2] 21367
>> [root at ccomp2 etc]# configuration file /etc/mpd.conf not found
>> A file named .mpd.conf file must be present in the user's home
>> directory (/etc/mpd.conf if root) with read and write access
>> only for the user, and must contain at least a line with:
>> MPD_SECRETWORD=<secretword>
>> One way to safely create this file is to do the following:
>>  cd $HOME
>>  touch .mpd.conf
>>  chmod 600 .mpd.conf
>> and then use an editor to insert a line like
>>  MPD_SECRETWORD=mr45-j9z
>> into the file.  (Of course use some other secret word than mr45-j9z.)
>>
>> and mpdtrace gives error :
>> /usr/local/bin/mpdroot: open failed for root's mpd conf filempdtrace
>> (__init__ 1190): forked process failed; status=255
>>
>> this is the forst time i am doing a project in linux clustering n cant
>> figure out What is the problem here?
>>
>
>
>
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