<div dir="ltr">Hi,<br><br> In my case, the mpd was not running. mpdboot was giving problem with mpd2.console_root file on that particular node.<br>Tried to delete it. But it couldn't. <br><br>You r telling it will delete??<br>
<br> Rebooted that node. The strange thing happened is the node failed to boot and stuck at GRUB prompt.<br><br> Then we reinstalled it. I'm not sure what is the exact cause for this.<br><br>Thanks,<br>Sangamesh<br><div class="gmail_quote">
On Sat, Oct 4, 2008 at 8:16 AM, Rajeev Thakur <span dir="ltr"><<a href="mailto:thakur@mcs.anl.gov">thakur@mcs.anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
From: Ralph Butler<br>
Sent: Friday, October 03, 2008 5:43 PM<br>
Subject: Re: [mpich-discuss] importance of /tmp/mpd2.console_root?<br>
<br>
A file in /tmp named mpd2.console_XXXX is a Unix socket. It is used by<br>
mpiexec (and other pgms) to connect to mpd. Typically XXXX is the name of a<br>
particular user who started the mpd and the socket can only be connected to<br>
by that user. However, if XXXX is root, and mpd was installed correctly,<br>
then other users may connect to the socket and run jobs. The socket should<br>
be removed when the mpd exits gracefully, e.g. via mpdallexit. However, it<br>
may be left when an mpd fails. But an old file should be removed when a new<br>
mpd starts.<br>
<br>
<br>
________________________________<br>
<br>
From: <a href="mailto:owner-mpich-discuss@mcs.anl.gov">owner-mpich-discuss@mcs.anl.gov</a><br>
[mailto:<a href="mailto:owner-mpich-discuss@mcs.anl.gov">owner-mpich-discuss@mcs.anl.gov</a>] On Behalf Of Sangamesh B<br>
Sent: Friday, October 03, 2008 1:22 AM<br>
To: MPICH ML<br>
Subject: [mpich-discuss] importance of /tmp/mpd2.console_root?<br>
<div><div></div><div class="Wj3C7c"><br>
<br>
Hi all,<br>
<br>
I want to know the importance of "mpd2.console_root" file.<br>
<br>
This file gets created after launching the mpd's in /tmp<br>
directory.<br>
<br>
srwxrwxrwx 1 root root 0 Oct 3 11:21 mpd2.console_root<br>
<br>
When mpd's are stopped, this file get deleted automatically.<br>
<br>
I'm curious to know about this because, recently I faced a problem<br>
with mpdboot. mpdboot was not happening and gave error with a particular<br>
node. I googled the error, then I came to know that its problem with the<br>
above file.<br>
<br>
Eventhough, there was no mpd(as user root) running on that node, the<br>
file /tmp/mpd2.console_root was present. I tried to delete. But it couldn't<br>
delete.<br>
<br>
So why this file is required? In the above case what's the wayout?<br>
<br>
Thanks,<br>
Sangamesh<br>
<br>
<br>
<br>
</div></div></blockquote></div><br></div>