It took us longer than we intended, but we finally released Open MPI v1.7.4.
Woo hoo! (we got nice coverage from El Reg, too)
This is a monster release; it represents hundreds (thousands? millions?) of person-hours of work. Consider this a ginormous "thank you!" to the entire Open MPI community! Special thanks goes to Paul Hargrove of Lawrence Berkeley Labs for his hero efforts in regression testing throughout December and January.
v1.7.4 is the latest in Open MPI's feature release series; here's some of the notable new / improved features:
And of course, lots and lots of little bug fixes and small improvements that aren't worth calling out in detail (see the NEWS file for more information)