1. Fix ompi_info memory leak in usnic BTL: do not allocate memory in
the component register function, because ompi_info only calls the
component register function and then dlclose's the component -- it
does not call component finalize. Instead, defer parsing the MCA
param (and alloc'ing memory) until the component init function so
that any allocated memory can be freed in the component close
function.
1. Also add a new check to ensure that we actually have some part
numbers to check. Add a show_help message if we don't find any
vendor part IDs to check.
1. Add a verbose output if usnic disqualifies itself from selection
because THREAD_MULTIPLE was specified.
cmr=v1.7.5:reviewer=dgoodell
This commit was SVN r30073.
If we need to use a convertor, go back to stashing that convertor in the
frag and populating segments "on the fly" (in
ompi_btl_usnic_module_progress_sends). Previously we would pack into a
chain of chunk segments at prepare_src time, unnecessarily consuming
additional memory.
Reviewed-by: Jeff Squyres <jsquyres@cisco.com>
Reviewed-by: Reese Faucette <rfaucett@cisco.com>
This commit was SVN r29592.
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.
