[mpich-discuss] mpdboot for ssh with password - a suggestion

[Pavan Balaji]

Passwordless ssh does not require root privileges.

  -- Pavan

On 06/05/2010 09:53 AM, Swatch Puppy wrote:
> Hello,
> 
> The problem is that if your working without root privileges, like i am 
> in the school fedora images loaded from pxe to the lab's computer, maybe 
> this could be helpful. Additionally the fedora image is set up so that 
> no ssh without password can be made (don't ask me why or how).
> I have to check hydra out, once that on my home computer i'm still using 
> mpdboot.
> 
> The best regards,
> SwatchPuppy
> 
> On Sat, Jun 5, 2010 at 3:36 PM, Pavan Balaji <balaji at mcs.anl.gov 
> <mailto:balaji at mcs.anl.gov>> wrote:
> 
> 
>     You need to setup passwordless ssh on your system, as described in
>     the README. You can google for "passwordless ssh" to figure out how
>     to do that.
> 
>     Btw, there's not going to be a next version of MPD -- in the MPICH2
>     1.3.x series, we have moved to a new process manager called Hydra.
>     But that still requires a passwordless ssh.
> 
>      -- Pavan
> 
> 
>     On 06/05/2010 09:32 AM, Swatch Puppy wrote:
> 
>         Hello all,
> 
>         I've been trying to setup a cluster in my university labs, but i
>         can't do ssh to the others computers without password. This is a
>         problem if mpdboot is used to start up the mpd ring, because it
>         will asks for a lot of passwords at the same time.
>         So I've edited the mpdboot python file and added *mpd.wait()* in
>         line 361 for mpich2 1.0.6, and 375 for mpich2 1.2.1p1, just
>         after *mpd = Popen4(cmd,0)*, in this way it will ask a password
>         per connection sequentially.
> 
> 
>         Hope that this can help someone, or affect change in the next
>         version of mpdboot.
> 
>         The best regards,
>         SwatchPuppy
> 
> 
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> 
>     -- 
>     Pavan Balaji
>     http://www.mcs.anl.gov/~balaji <http://www.mcs.anl.gov/%7Ebalaji>
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> 
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-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji