Hi Jenny: Just throwing in my 2 cents here.
If you are new to batch scheduling systems and you don't have a preference, I would recommend using something like Torque or SGE (instead of OpenPBS). OpenPBS is no longer being maintained and there are much better choices out there. Cheers, Bernard > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Jenny Aquilino > Sent: Friday, September 03, 2004 11:08 > To: Michael Edwards; [EMAIL PROTECTED] > Subject: Re: [Oscar-users] How do you make master node a > compute node too? > > Hi Michael, > > Wow, thanks for the quick response. =) Yeah, please don't > break your production cluster just to check this out. I will > look at the installer again to see if I see that check box > you're talking about. > It actually sounds really familiar. I installed an OSCAR > cluster about 3 years ago and I think I remember seeing that > then but I can't seem to find it now. I did try defining the > master nodes private interface as node0.cluster using the > install_server GUI with horrific results. Yeah, I won't try > that again. It completely broke my access to the oda > database so I couldn't back out of the installation or fix > it. I spent quite a bit of time trying differen things like > granting access to the [EMAIL PROTECTED] user but it > still wouldn't work so I finally just threw my hands up and > rebuilt the system. =P > > As for just geting mpich to work on its own, it appears that > it is configured correctly after the OSCAR installation so > that isn't really a huge problem. Well, except for the fact > that it is only seeing one processor for use. If you have > any idea why that is happening please let me know. I would > really like to have all the management stuff working though > which is why I'm still pushing to try and get the xpbs stuff > setup correctly. If you have any other ideas for me, that > would be great. Thanks Michael. > > -Jenny =) > At 12:33 PM -0400 9/3/04, Michael Edwards wrote: > >I am fairly sure there is a radio box somewhere in the > install process > >that says "Use head node to compute". I will try and see if > I can find > >it if I can find a computer I don't mind breaking... Don't want to > >mess with my production cluster, at least one of the installer steps > >does things even if you hit cancel :) > > > >If you just need to use lam (or I assume mpich, never tried > installing > >that one), it is quite easy to install stand alone and > configure to run > >on one computer. OSCAR is mainly handy for installing the scheduler > >and resource managers. Then you could go back and start over with > >OSCAR once you get some compute nodes. Just a thought for a > quick fix. > > > >Unless there is something else in OSCAR you would need for > development, > >I can't think of anything off the top of my head though. > >I could walk you through using lam on just one node if you > need a hand, > >I have done it before while testing things. > > > >On Fri, 3 Sep 2004 09:05:44 -0700, Jenny Aquilino > <[EMAIL PROTECTED]> wrote: > >> Hi, > >> > >> I was hoping that someone out there might be able to help me out > >> with this question. I am currently working on a rather strange > >> cluster...it's only one node. I know that sounds strange > but there > >> is a reason for it. The user only has one system to start > out with > >> but would like to add more nodes very soon. The problem > is that he > >> can't wait for the other nodes to come on-line before he starts > >> developing on it so I need to make this one node cluster > functional > >> for him. > >> > >> I saw the FAQ on the OSCAR sourceforge website that says > to modify > >> the /var/spool/pbs/server_priv/nodes file and then restart the > >> pbs_mom, pbs_server in order to make the master a node so > I did that. > >> When I run "pbsnodes -a" it does reflect my one node. > However, when > >> I run xpbs to see how many processors are allocated to my > server, it > >> reflects 0. It also shows the workq as not having access to any > >> processors. I added a print statement to one of the mpich > example > >> programs to print out the number of cpus recognized by the > >> "MPI_Comm_size" command and it returned 1 when in fact my > system has > >> 2 processors. Does anyone know why this might be? Is > one of the > >> processors on the master node always reserved? More > generally, is > >> there a set of steps anyone could recommend to be able to get the > >> master node setup like a client as far as the monitoring and > >> scheduling tools go? I did go into qmgr and by hand can > enter the > >> information but it seems that when other nodes get built, that > > > information is automatically populated into the tables > and I would > >> really like it if I could get the master to populate this > >> information on itself when it is setup to also be a compute node. > >> > >> I hope this e-mail makes sense. I'm a little crazy after > several > >> nights of tossing and turning trying to figure out why > things aren't > >> working the way I would expect them to. Thanks in advance > for any > >> help you can offer. =) > >> > >> -Jenny Aquilino =) > >> > >> ------------------------------------------------------- > >> This SF.Net email is sponsored by BEA Weblogic Workshop > FREE Java > >> Enterprise J2EE developer tools! > >> Get your free copy of BEA WebLogic Workshop 8.1 today. > >> http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click > >> _______________________________________________ > >> Oscar-users mailing list > >> [EMAIL PROTECTED] > >> https://lists.sourceforge.net/lists/listinfo/oscar-users > >> > > > > ------------------------------------------------------- > This SF.Net email is sponsored by BEA Weblogic Workshop FREE > Java Enterprise J2EE developer tools! > Get your free copy of BEA WebLogic Workshop 8.1 today. > http://ads.osdn.com/?ad_id=5047&alloc_id=10808&op=click > _______________________________________________ > Oscar-users mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/oscar-users > > ------------------------------------------------------- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! 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