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Автор SHA1 Сообщение Дата
Dave Goodell
9cab9777d9 usnic: properly destroy embedded small send frag
Without this, an `--enable-debug` build would hit an assertion in the
list code when run under valgrind with `--malloc-fill=0xff` or any other
case where malloc returned non-zeroed buffers.

Also allow the normal OBJ_ machinery to handle the constructor
invocation ordering for us instead of doing it by hand (which could have
led to future bugs).

Reviewed-by: jsquyres@cisco.com

cmr=v1.7.4

Depends on trunk functionality in r29095 and r29096.  Refs trac:3740,#3741.

This commit was SVN r29127.

The following SVN revision numbers were found above:
  r29095 --> open-mpi/ompi@d1b5940e97
  r29096 --> open-mpi/ompi@a552921171

The following Trac tickets were found above:
  Ticket 3740 --> https://svn.open-mpi.org/trac/ompi/ticket/3740
2013-09-04 20:59:12 +00:00
Jeff Squyres
4b6006402d Use the RTE framework instead of calling ORTE directly.
Brian (rightfully) hit me on the head with the
don't-use-ORTE-use-the-rte-framework clue bat; the usnic BTL now
nicely plays with the RTE framework.

This commit was SVN r28907.
2013-07-22 17:28:23 +00:00
Jeff Squyres
194b285447 First commit of the Cisco usNIC BTL.
This BTL accesses the Cisco usNIC Linux device via the Linux verbs
API via Unreliable Datagram queue pairs.  A few noteworthy points:

 * This BTL does most of its own fragmentation; it tells the PML that
   it has a very high max_send_size (much higher than the network
   MTU).
 * Since UD fragments are, by definition, unreliable, the usnic BTL
   handles all of its own reliability via a sliding window approach
   using the opal_hotel construct and many tricks stolen from the
   corpus of knowledge surrounding efficient TCP.
 * There is a fun PML latency-metric based optimization for NUMA
   awareness of short messages.
 * Note that this is ''not'' a generic UD verbs BTL; it is specific to
   the Cisco usNIC device.

This commit was SVN r28879.
2013-07-19 22:13:58 +00:00