- native MPI min/max/sum reductions for float/double
irrespective of WM_PRECISION_OPTION
- native MPI min/max/sum reductions for (u)int32_t/(u)int64_t types,
irrespective of WM_LABEL_SIZE
- replace rarely used vector2D sum reduction with FixedList as a
indicator of its intent and also generalizes to different lengths.
OLD:
vector2D values; values.x() = ...; values.y() = ...;
reduce(values, sumOp<vector2D>());
NEW:
FixedList<scalar,2> values; values[0] = ...; values[1] = ...;
reduce(values, sumOp<scalar>());
- allow returnReduce() to use native reductions. Previous code (with
linear/tree selector) would have bypassed them inadvertently.
ENH: added support for MPI broadcast (for a memory span)
ENH: select communication schedule as a static method
- UPstream::whichCommunication(comm) to select linear/tree
communication instead of ternary or
if (Pstream::nProcs() < Pstream::nProcsSimpleSum) ...
STYLE: align nProcsSimpleSum static value with etc/controlDict override
- returns a range of `int` values that can be iterated across.
For example,
for (const int proci : Pstream::subProcs()) { ... }
instead of
for
(
int proci = Pstream::firstSlave();
proci <= Pstream::lastSlave();
++proci
)
{
...
}
