Brian Barrett 93a2f31932 Use a recursive halving communication algorithm similar to the one used by ...

MPICH2 for "small" commutative operations in the reduce_scatter basic
implementation.  "small" is currently pretty big, as it doesn't take
much to beat reduce/scatterv.  Need to do much more than this for
better all around performance of MPI_Reduce_scatter, but this was enough
to solve the problems I was having.

This commit was SVN r13348.

2007-01-29 19:29:35 +00:00

..

allocator

Remove unneeded PARAM_INIT_FILE variable in configure.params files used by

2007-01-08 03:44:22 +00:00

bml

- Reduce the amount of warnings with -Wshadow -- mainly due to

2007-01-19 19:48:06 +00:00

btl

Add in the hostname to the BTL_* output macros so that you can tell on

2007-01-25 14:02:54 +00:00

coll

Use a recursive halving communication algorithm similar to the one used by

2007-01-29 19:29:35 +00:00

common

Take into account constants that in the cray headers are defined different than in the portals spec.

2007-01-25 18:32:47 +00:00

io

Remove unneeded PARAM_INIT_FILE variable in configure.params files used by

2007-01-08 03:44:22 +00:00

mpool

The mpi_leave_pinned and mpi_leave_pinned_pipeline MCA parameters were

2007-01-21 14:02:06 +00:00

mtl

oops, ".", not "->", copy error...

2007-01-24 19:16:46 +00:00

osc

Start long message send as soon as possible, to minimze ack time for the receive,

2007-01-25 23:07:03 +00:00

pml

- Minor bugfixes and removed compiler warnings

2007-01-28 19:52:09 +00:00

rcache

Add explicit conversions.

2007-01-24 00:49:08 +00:00

topo

Remove unneeded PARAM_INIT_FILE variable in configure.params files used by

2007-01-08 03:44:22 +00:00