[gridway-user] host id order and user access

[Ruben Santiago Montero]

Hi,

On Friday 31 August 2007 16:05, John-Paul Robinson wrote:
> Hi,
>
> I was wondering how gridway deals with sorting the clusters in the
> gwhost output.  I thought there might be some relationship to the order
> of the systems in gwd.conf but I've seen systems show up in different
> orders (with different host id values) after restarting gwd.

Yes, it should depend in the order they are discovered by the IM driver.
>
> Also, how does gridway deal with the scenario when a user isn't
> authorized to run on certain hosts?  Does it just include the host in
> the execution pool and if there is an authn reject (like no mapping in
> the remote grid-mapfile), it just moves on to the next cluster?

When a resource fails, GridWay implements an exponential linear back-off 
strategy at resource level (and per each user), so resources with persistent 
failures are discarded (for a given user). In particular when a resource 
fails it is banned for that user for a number of seconds (check 
http://www.gridway.org/documentation/stable/installconfguide/x835.htm#AEN892
for more details). Therefore the job is scheduled on the next resource (that 
with the highest combined priority)

Regards

Ruben

>
> Thanks for any feedback.
>
> ~jpr

-- 
+-----------------------------------------------------------+
 Dr. Ruben Santiago Montero
 Associate Professor
 Dpto. Arquitectura de Computadores y Automatica
 Facultad de Informatica
 Universidad Complutense      phone  : +34 91 394 75 38
 28040 Madrid                 fax    : +34 91 394 75 27
 Spain                        email  : rubensm at dacya.ucm.es
 http://asds.dacya.ucm.es/
+-----------------------------------------------------------+

GridWay, The Way to Grid! http://www.gridway.org