I'm quite embarrassed, I misread the function prototype and was passing in the actual proc_name rather than a pointer to it! It didn't complain when I was compiling so I didn't think twice. It was silly mistake on my part in any case! That RML tip is still handy though, thanks.

2009/1/20 Ralph Castain <rhc@lanl.gov>

You sholud be able to use the OOB by that point in the system. However, that is the incorrect entry point for sending messages - you need to enter via the RML. The correct call is to orte_rml.send_nb.

Or, if you are going to send a buffer instead of an iovec, then the call would be to orte_rml.send_buffer_nb.

Ralph

On Jan 19, 2009, at 1:01 PM, Timothy Hayes wrote:

Hello

I'm in the midst of writing a BTL component, all is going well although today I ran into something unexpected. In the mca_btl_base_module_add_procs_fn_t function, I'm trying to call mca_oob_tcp_send_nb() which is returning -12 (ORTE_ERR_UNREACH). Is this normal or have I done something wrong? Is there a way around this? It would be great if I could call this function in that particular area of code.

Kind regards
Tim Hayes
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