This commit adds support for loading a three-column NLDD
partitioning scheme of the form
MPI_Rank Cartesian_Index NLDD_Domain_ID
from a text file. In an MPI run it is assumed that the first column
holds integers in the range 0..MPI_Size()-1, and typically that each
such integer is listed at least once. In a sequential run, the MPI
rank column is ignored.
With this scheme we can load the same partition files that we write,
for increased repeatability and determinism, and we can also
experiment with externally generated NLDD partitions.
This commit adds a new (hidden) debugging option,
DebugEmitCellPartition (--debug-emit-cell-partition)
which, when set, will cause each rank to write a three-column text
file of the form
MPI_Rank Cartesian_Index NLDD_Domain_ID
into the directory
partition/CaseName
of the run's output directory. That file will be named according to
the process' MPI rank, so the first column will be the same as the
file name.
The option is primarily intended for debugging the NLDD partitioning
scheme, so is mostly reserved for runs with low MPI sizes (e.g.,
less than 20).
While here, also make the MPIPartitionFromFile helper class aware of
this format so that we can use concatenated output files as an input
to the MPI partitioning algorithm for repeatability.
This commit introduces new, experimental support for loading a
partitioning of the cells from a text file. The name of the file is
passed into the simulator using the new, hidden, command line option
--external-partition=filename
and we perform some basic checking that the number of elements in the
partition matches the number of cells in the CpGrid object.
The well dfactor is scaled by the well index
If postive the connection dfactor is threated as a well factor
and also scaled. If negative the connection dfactor is not scaled
This commit switches the current implementation of
'partitionCellsZoltan()', i.e., 'partitionCells("zoltan", ...)' into
using the MPI-aware ParallelNLDDPartitioningZoltan utility. In
doing so we make 'partitionCellsZoltan()' private since its
availability is not guaranteed. We also slightly reorder the
parameters and switch from passing a "Grid" into passing a
"GridView" as an argument to partitionCells(), and specialise this
function for the known grid views in OPM Flow.
We extract the Zoltan-related parameters out to an Entity-dependent
helper structure and move the complexity of forming this type to a
new helper function, BlackoilModelEbosNldd::partitionCells().
Invokes Zoltan library and requires MPI. Client code constructs an
abstract connectivity graph by defining connections/edges through
the 'registerConnection()' member function. May also impose a
restriction that certain cells/vertices be placed in the same
domain/block in the resulting partition. Client code must supply a
callback function that defines globally unique cell/vertex/object
IDs, across all MPI ranks, for each vertex in the connectivity
graph.
Member function 'partitionElement()' forms the resulting partition
vector, the size of which is the total number of objects visible to
the local rank-typically the number of cells owned by the rank, and
the number of overlap cells--i.e., the size of the local grid view.
This should replace OPM_DEFLOG_THROW in places where the problem
category is more appropriate than the error category.
In this commit, uses of OPM_DEFLOG_THROW have been replaced whenever
the exception class used was NumericalProblem.
This commit adds a new flag data member,
wellStructureChangedDynamically_
to the generic black-oil well model. This flag captures the
well_structure_changed
value from the 'SimulatorUpdate' structure in the updateEclWells()
member function. Then, in BlackoilWellModel::beginTimeStep(), we
key a well structure update off this flag when set. This, in turn,
enables creating or opening wells as a result of an ACTIONX block
updating the structure in the middle of a report step.
