<div dir="ltr"><br><div style> The issue seems to be that you have probably not created a machinefile which consists of node name to number of processes mapping and this file should be present in the same dir. of the other nodes on which you are launching other MPI processes, this is required in case you want to run the MPI program across the two or more nodes, you can find more details of the format in which this information has to be in the machinefile and the other requisite steps need for running your MPI program across multiple nodes from this link <a href="http://wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager">http://wiki.mpich.org/mpich/index.php/Using_the_Hydra_Process_Manager</a></div>
<div style> Also, in order to launch the processes across multiple nodes you need to do ssh passwordless login among those nodes, in case you are using ssh as the connection mechanism, you can find more details about the procedure for ssh passwordless login over here <a href="http://www.techlitic.com/ssh-passwordless-login.html">http://www.techlitic.com/ssh-passwordless-login.html</a></div>
<div style><br></div><div style><br></div><div style>Regards,</div><div style>Mahesh Doijade,</div><div style><a href="http://www.techdarting.com/">http://www.techdarting.com/</a><br></div><div class="gmail_extra"><br><br>
<div class="gmail_quote">On Tue, Aug 20, 2013 at 8:34 AM, Pavan Balaji <span dir="ltr"><<a href="mailto:balaji@mcs.anl.gov" target="_blank">balaji@mcs.anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<br>
I'm pasting the error inline, for others' information.<br>
<br>
FYI, the error is "unable to open host file: machinefile".<br>
<br>
----8<----<br>
mpirun -f machinefile -n 2 /home/urp/mpich-install/hello<br>
[<a href="mailto:mpiexec@masternode.csd.com" target="_blank">mpiexec@masternode.csd.com</a>] HYDU_parse_hostfile (./utils/args/args.c:323): unable to open host file: machinefile<br>
[<a href="mailto:mpiexec@masternode.csd.com" target="_blank">mpiexec@masternode.csd.com</a>] mfile_fn (./ui/mpich/utils.c:341): error parsing hostfile<br>
[<a href="mailto:mpiexec@masternode.csd.com" target="_blank">mpiexec@masternode.csd.com</a>] match_arg (./utils/args/args.c:153): match handler returned error<br>
[<a href="mailto:mpiexec@masternode.csd.com" target="_blank">mpiexec@masternode.csd.com</a>] HYDU_parse_array (./utils/args/args.c:175): argument matching returned error<br>
[<a href="mailto:mpiexec@masternode.csd.com" target="_blank">mpiexec@masternode.csd.com</a>] parse_args (./ui/mpich/utils.c:1609): error parsing input array<br>
[<a href="mailto:mpiexec@masternode.csd.com" target="_blank">mpiexec@masternode.csd.com</a>] HYD_uii_mpx_get_parameters (./ui/mpich/utils.c:1660): unable to parse user arguments<br>
[<a href="mailto:mpiexec@masternode.csd.com" target="_blank">mpiexec@masternode.csd.com</a>] main (./ui/mpich/mpiexec.c:153): error parsing parameters<br>
[root@masternode ~]#<br>
----8<----<br>
<br>
On 08/19/2013 01:27 AM, urmila pol wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
Dear sir,<br>
<br>
I have attaching the screenshots of my errors please guide me .waiting<br>
for reply.<br>
<br>
<br>
With regards,<br>
<br>
Dr.Urmila R. Pol<br>
Assistant Professor,<br>
Department of computer Science,<br>
Shivaji University, Kolhapur.<br>
<br><span class=""><font color="#888888">
</font></span></blockquote><span class=""><font color="#888888">
<br>
-- <br>
Pavan Balaji<br>
<a href="http://www.mcs.anl.gov/~balaji" target="_blank">http://www.mcs.anl.gov/~balaji</a><br>
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