RE: gmID conflicts on static mapping

Leonardo,

The ID conflict usually arises when there
are conflicting mapper *.hosts files on two
machines in the cluster.
Have you run the active mapper on more than
one machine?

See:

 http://www.myri.com/cgi-bin/fom?file=131

And if that doesn't help, let us know!

--Ruth

> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On 
> Behalf Of Leonardo Alves de Paula e Silva
> Sent: Thursday, April 10, 2003 2:50 PM
> To: [email protected]
> Subject: [Myrinet] gmID conflicts on static mapping
> 
> 
> Hi,
> 
> I'm using static mapping to route the messges on our Myrinet and I 
> had a weird problem with file_mapper.
> 
> I have 16 nodes connected ad 15 have done the mapping without 
> problems. I have syncronized all nodes using rsynch, so the 
> system installation is the same in all nodes.
> 
> On this problematic one, the command 
> 
> l10:/usr/local/gm-1.6.3# ./file_mapper ../etc/gm/file.args. 
> 
> never ends and when I press ^C it outputs segmentation fault.
> 
> I have decided to look the routing table unsing gm_boar_info 
> output in all nodes. 
>  
> On l10, the problematic, its routing table don't have a line to 
> the mapper, l1. Instead, the gmID 1 is attributed to l10 mac 
> address and it shows a message which I could not understand:
> 
> Route table for this node follows:
> The mapper 48-bit ID was: 00:60:dd:7f:26:ff
> gmID MAC Address                                 gmName Route
> ---- ----------------- -------------------------------- 
> ---------------------
>    1 00:60:dd:7f:26:ff *** node_id->unique_id->node_id is 
> 0x5. ***                       
> localhost 80 (this node) (mapper)
> 
> On the other nodes, l1 node have gmID of 1 and it is showed on the 
> first line. That is the output:  
> 
> Route table for this node follows:
> The mapper 48-bit ID was: 00:60:dd:7f:27:16
> gmID MAC Address                                 gmName Route
> ---- ----------------- -------------------------------- 
> ---------------------
>    1 00:60:dd:7f:27:16                        localhost 80 (this 
> node) (mapper) 
>  
> I have tried to map again and I have this output of 
> 
> l1:/usr/local/gm-1.6.3/sbin# ./mapper ../etc/gm/static.args 
> 18:43:54 starting to map. My clock says Thu Apr 10 18:43:54 2003
> 18:43:55 id conflict gmId 1, address 0060dd7f26ff
> 18:43:55 this id has been seen before on host localhost
> 18:43:56 map time was 2869039 lanai ticks, which is 1434 
> millisecs.
> 18:43:56 found 16 hosts and 6 switches (22 nodes)
> 18:43:56 localhost has an id conflict
> 18:43:56 configuring
> 18:43:56 cleared conflict on  localhost (address 0060dd7f26ff)
> 18:43:56 route computation took 0 milliseconds
> 18:43:56 configuration took 20 milliseconds
> 18:43:56 map-once or configure-once enabled. Done mapping.
> 
> How can I avoid this gmId conflict?
> 
> -- 
> Leonardo Alves de Paula e Silva                [email protected]
> Msc. Student                       Institute of Informatics/UFRGS
> GPPD                                 http://www-gppd.inf.ufrgs.br
> 
> Address:
> Av. Bento Gonçalves, 9500 Bloco IV    PO Box 15064      91501-970
> Phone: +55 51 3316-6168 (Lab. 207)          Fax: +55 51 3316-7308 
> Porto Alegre - RS                                          Brazil
> 
> 
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