The main requirements were that 1) "it must look like top", 2) it must be cli-based, 3) it should not introduce another piece of (server) software (and thus point of failure) into the system, 4) and it should not require any local hacks on our part.
Since this is a web cluster, I suppose the most logical transport would be HTTP, but everything I've seen so far would require me to violate (4) to satisfy 1-3. SSH & SNMP are also available, I could see SNMP being problematic for a project like this. SSH *might* work and *might* be scalable for a project like this since the main expense is in the construction the connections (and they can be re-used across the course of the execution), but I have yet to find a top-like program that leverages it. xmlsysd & wulfstat would appear to be the least expensive solution to this problem, but as I said, management already nixed it. Honestly, if it weren't for (4), I'd probably just grab the top source and graft it onto a SSH library. It might not be the most efficient solution, but for a HA cluster it doesn't necessarily HAVE to be. On 11/30/08, Robert G. Brown <[EMAIL PROTECTED]> wrote: > On Sat, 29 Nov 2008, Greg Kurtzer wrote: > >> Warewulf has a real time top like command for the cluster nodes and >> has been known to scale up to the thousands of nodes: >> >> http://www.runlevelzero.net/images/wwtop-screenshot.png >> >> We are just kicking off Warewulf development again now that Perceus >> has gotten to a critical mass and Caos NSA 1.0 has been released. We >> should have our repositories for Warewulf-3 pre-releases up shortly >> but if you need something ASAP, please contact me offline and I will >> get you what you need. >> >> Thanks! >> Greg >> >> On Wed, Nov 26, 2008 at 12:39 PM, Thomas Vixel <[EMAIL PROTECTED]> wrote: >>> I've been googling for a top-like cli tool to use on our cluster, but >>> the closest thing that comes up is Rocks' "cluster top" script. That >>> could be tweaked to work via the cli, but due to factors beyond my >>> control (management) all functionality has to come from a pre-fab >>> program rather than a software stack with local, custom modifications. >>> >>> I'm sure this has come up more than once in the HPC sector as well -- >>> could anyone point me to any top-like apps for our cluster? >>> >>> For reference, wulfware/wulfstat was nixed as well because of the >>> xmlsysd dependency. > > That's fine, but I'm curious. How do you expect to run a cluster > information tool over a network without a socket at both ends? If not > xmlsysd, then something else -- sshd, xinetd, dedicated or general > purpose, where the latter almost certainly will have have higher > overhead? Or are you looking for something with a kernel level network > interface, more like scyld? > > rgb > >>> _______________________________________________ >>> Beowulf mailing list, Beowulf@beowulf.org >>> To change your subscription (digest mode or unsubscribe) visit >>> http://www.beowulf.org/mailman/listinfo/beowulf >>> >> >> >> >> -- >> Greg Kurtzer >> http://www.infiscale.com/ >> http://www.runlevelzero.net/ >> http://www.perceus.org/ >> http://www.caoslinux.org/ >> _______________________________________________ >> Beowulf mailing list, Beowulf@beowulf.org >> To change your subscription (digest mode or unsubscribe) visit >> http://www.beowulf.org/mailman/listinfo/beowulf >> > > Robert G. Brown Phone(cell): 1-919-280-8443 > Duke University Physics Dept, Box 90305 > Durham, N.C. 27708-0305 > Web: http://www.phy.duke.edu/~rgb > Book of Lilith Website: http://www.phy.duke.edu/~rgb/Lilith/Lilith.php > Lulu Bookstore: http://stores.lulu.com/store.php?fAcctID=877977 > _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
