fix GRAPPA_FREEZE
Merge branch 'graphlabapi+mpi+collectives' into graphlabapi+mpi
fix send_immediate
keep communicator garbage collection from blocking
remove message pool
improve mpi error handling
remove remaining gasnet references
make GCE work with aggregation disabled
do "best-effort" immediate sends---only do immediate sends when send context is available (enqueue otherwise)
avoid infinite recursion when using GCE in immediate send mode
fix suspended coroutine list in GDB macros
be careful of bad buffer count configurations
refactor stats blob printing to always occur just before shutdown. periodic stats blob printing now disabled
whoops; put back a messagepool that was necessary for correctness
make sure we leave enough memory to merge stats blob at end of test
add message/bytes metric to mpi communicator
add core direct capacity sends
disable per-core capacity flushes, since they just seem to slow things down
change default mvapich2 flags based on gups experiments
Merge branch 'graphlabapi+mpi+immediatesend' into graphlabapi+mpi+serialfor