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Subject: Re: [OMPI devel] Problems obtaining jdata->map in the HNP.
From: Hugo Daniel Meyer (meyer.hugo_at_[hidden])
Date: 2012-03-18 15:52:47


Hello Ralph.

I'm not using the trunk, i'm using a version from a year ago.

So, if i understand correctly, the best way to make what i want is to
include my data structure into the orte_nidmap, then cycle across all the
processes in my application to fill my structure.

Thanks for your reply Ralph.

Hugo

El 18 de marzo de 2012 19:46, Ralph Castain <rhc_at_[hidden]> escribió:

> Is this in the trunk? Or in some release branch?
>
> The daemon job has a map and nodes defined in it on the trunk, but not in
> earlier releases. If you want the HNP to find that info in an earlier
> release, you could instead cycle across the entries in orte_node_pool,
> looking for those that have a daemon assigned to them.
>
> As for the daemons - no, they don't have a copy of the orte_node_t
> structures. Once the new state machine gets committed, then they will - but
> in the meantime, the only node-type information they have is in the
> orte_nidmap list. See the definition of orte_nid_t in
> orte/runtime/orte_globals.h.
>
>
> On Mar 18, 2012, at 9:38 AM, Hugo Daniel Meyer wrote:
>
> Hello.
>
> I've included a new list in the orte_node_t (because i need to have a copy
> of my data structure per daemon), it is an array of my own data structure,
> which i will fill with data about the processes in the job, and other data
> that interest me.
>
> For test purposes, i'm trying to command the table fill from the process
> with rank 0. This process send a message (send_buffer) to his HNP (using
> "process_command" of orted_comm.c). The HNP receives this command and try
> to obtain jdata of the daemons with the jobid of the sent by the rank 0.
>
> * if (NULL == (jdata_orte = orte_get_job_data_object(jobid_orted)){*
> * // problem*
> *}*
>
> I obtain the jdata_orte without problems, but, the jdata_orte->map is
> null, and of course, i cannot do something like:
>
> *node_from_map =
> (orte_node_t*)opal_pointer_array_get_item(jdata->map->nodes, i);*
> *
> *
>
> I need to obtain every node, and access my table to fill it.
>
> My question is, the daemons do not fill this information, that's why i get
> the jdata->map equal to NULL? If so, how can i obtain all the orte_node_t
> objects to fill them with the information that i need? As i understand,
> each daemon has a copy of the orte_node_t structures, is this so?
>
> Thanks for the help.
>
> Hugo
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