Thanks Jeff for addressing this question. I read
through your response and managed to use the
information to remove some unessential processes.
Overall on AIX I have found that I needed the
following processes running to keep rsh going:
inetd
qdaemon
writsrv
uprintfd
Also, my computers wouldn't let me kill srcmstr and
shlap. The processes would end and then automatically
restart.
-Andy
--- Jeff Squyres <jsquyres_at_[hidden]> wrote:
> On Fri, 23 Apr 2004, Andy Young wrote:
>
> > I would like to know if there are any daemons
> running on my machines
> > that I can shut down while running LAM through
> sockets and booting with
> > RSH.
>
> In general, the only thing that LAM *needs* is a
> remote booting agent,
> such as the RSH daemon (or the SSH daemon or BProc
> or PBS or ...). Some
> clusters find other services *useful*, such as NFS,
> but they're not
> technically *necessary*. Check out the FAQ in the
> "Typical Setup of LAM"
> section.
>
> > Here is a list of running daemons that I think may
> be unnecessary for
> > LAM, but I am not sure. On these machines, only
> calculations are
> > running, and all things like CDE have been turned
> off for now. Also,
> > the machines are not accessible to a public
> network and my OS is
> > AIX4.3.3 on RS/6000 Power3 architecture. The
> network is TCP/IP over
> > ethernet 100Mb because we are too poor for SP data
> switches. Thanks for
> > any responses.
>
> > The programs that I'd like to kill to save
> memory/cpu
> > are:
> > /etc/ncs/llbd
> > /usr/ccs/bin/shlap
> > /usr/sbin/srcmstr
>
> I'm not sure what these are -- I'm not an AIX guru
> -- so I don't know
> whether you need them or not.
>
> > /usr/sbin/syslogd
>
> >From my sysadmin background, I doubt you want to
> turn off the syslog. The
> syslog is where all the OS/system logs go. If
> something goes wrong,
> you'll definitely want to look in the logs.
>
> > /usr/sbin/inetd
>
> It depends on how your rsh daemon is kicked off --
> some run in standalone
> mode, but some are kicked off by inetd. Same
> disclaimer as above -- I'm
> not an AIX guru. I don't know how AIX
> configurations typically do it.
>
> > /usr/sbin/portmap
>
> If you're running NFS, you'll likely need this.
>
> > /usr/sbin/snmpd
>
> This is for network monitoring -- you may or may not
> want it enabled.
> There's firm religious (as well as quantifiable)
> reasons to leave it on
> and to turn it off. I typically don't run it on my
> clusters, but your
> opinions may be different.
>
> > /usr/sbin/dpid2
>
> I don't know what that is.
>
> > rpc.ttdbserver 100083 1
>
> I *believe* that this has to do with X relaying and
> permissions; if you're
> not running any X services on the remote nodes
> (through RSH or SSH or
> otherwise), then I think you should be safe turning
> this off.
>
> > /usr/sbin/biod 6
> > /usr/sbin/rpc.statd
> > /usr/sbin/rpc.lockd
>
> All three of these have to do with NFS.
>
> > /usr/sbin/uprintfd
> > /usr/sbin/qdaemon
> > /usr/sbin/writesrv
> > /usr/lpp/diagnostics/bin/diagd
> > /etc/ncs/glbd -create -first -family ip
>
> Same disclaimer about AIX: I don't know what these
> services are.
>
> One thing I don't see here (although it could be
> under a different name,
> or you may not have listed it) is a mail transfer
> agent (MTA). Again,
> there's a lot of philosophical debates here, and
> every sysadmin will give
> you a different opinion on the subject, but I
> typically leave outgoing
> mail enabled on cluster nodes in order to receive
> nightly status e-mails
> and any "system is hosed; need a human to fix!"
> automated kinds of
> e-mails.
>
> Hope that helps.
>
> --
> {+} Jeff Squyres
> {+} jsquyres_at_[hidden]
> {+} http://www.lam-mpi.org/
> _______________________________________________
> This list is archived at
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