[mpich-discuss] Add an mpd to existing mpdring?

[Sangamesh B]

On Wed, Nov 19, 2008 at 8:54 PM, Darius Buntinas <buntinas at mcs.anl.gov> wrote:
> The -h and -p parameters to mpd allow you to connect a new mpd to an
> existing ring.  First use mpdtrace -l to show you the existing mpds
> along with the hosts where they are running and the ports where each is
> listening.  E.g., when you call mpdtrace from one of the hosts in the ring:
>
> % mpdtrace -l
> node01_58046 (XXX.XXX.XXX.XXX)
>
> This says there is one mpd in your ring on host "node01" listening on
> port 58046.  Then on the host that you want to add to the ring start a
> new mpd and tell it to connect to one of the mpds already in the ring:
>
> % mpd -h node01 -p 58046 &
>
> If you need, you can add the --ncpus=XX option to mpd.
>
> Now mpdtrace should show that the new host has been added.
>
Thank you for the info
> -d
>
>
> On 11/19/2008 07:53 AM, Sangamesh B wrote:
>> Hello MPICH2 users,
>>
>>      Is it possible to add a node(or mpd) to the already booted mpd's mpdring.
>>
>> The scenario is there are 5 nodes(dual core dual processor - 20 slots
>> total), in which mpd is booted on 4 nodes with mpdboot command. Now
>> can I boot mpd on 5th node and add it to the existing ring, so that an
>> 8 core job can be fired on 4th & 5th node.
>>
>> Thanks,
>> Sangamesh
>