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Subject: [OMPI devel] ob1 question
From: Sebastian Rinke (rinke_at_[hidden])
Date: 2009-07-24 10:22:40


Hello,

Testing a new BTL component I get SIGSEGV
in mca_pml_ob1_recv_request_progress_frag().

I found that recvreq points to an unmapped
memory location. As far as I understand recvreq
is taken directly from the PML header of the
message received?

To better understand the message flow, could you please
describe me the protocol how ob1 transmits the data
(with control messages)?

I have implemented the following BTL functions:

add_procs
del_procs
finalize
alloc
free
prepare_src
send
component_progress

Thx in advance

Sebastian.