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Brian Barrett
25d48e22fa Implementation of the MPI-3 Matched Probe functionality. Currently only
implemented in the OB1 PML, will return NOT_SUPPORTED in other PMLs.

This commit was SVN r25865.
2012-02-06 17:35:21 +00:00
Rolf vandeVaart
0324fdb407 Created two new macros that are used when filling in either the
status structure or the _ucount field in the status structure.
On 64-bit sparc, the macros resolve into integer array assignments.
For all others, they are just simple assignments.  This fixes 
possible BUS errors seen when running on the SPARC processor.
This bug was introduced when the _count field changed from an int
into a size_t.  See the changes to request.h for additional details.

This commit fixes trac:2514.

This commit was SVN r23554.

The following Trac tickets were found above:
  Ticket 2514 --> https://svn.open-mpi.org/trac/ompi/ticket/2514
2010-08-04 19:36:40 +00:00
Ralph Castain
17f51a0389 Add a new PML module that acts as a "mini-dr" - when requested, it performs a dr-like checksum on messages for BTL's that require it, as specified by MCA params.
Add two new configure options that specify:

1. when to add padding to the openib control header - this *only* happens when the configure option is specified

2. when to use the dr-like checksum as opposed to the memcpy checksum. Not selectable at runtime - to eliminate performance impacts, this is a configure-only option

Also removed an unused checksum version from opal/util/crc.h.

The new component still needs a little cleanup and some sync with recent ob1 bug fixes. It was created as a separate module to avoid performance hits in ob1 itself, though most of the code is duplicative. The component is only selectable by either specifying it directly, or configuring with the dr-like checksum -and- setting -mca pml_csum_enable_checksum 1.

Modify the LANL platform files to take advantage of the new module.

This commit was SVN r20846.
2009-03-23 23:52:05 +00:00