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Enable Loading Parallel NLDD Partition From File

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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 is contained in:
Bård Skaflestad
2023-10-23 16:56:55 +02:00
parent 68fe118781
commit ea3b22480a
3 changed files with 258 additions and 22 deletions
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29
opm/simulators/utils/compressPartition.cpp
View File

@@ -34,16 +34,9 @@ namespace {
return { *mmPos.first, *mmPos.second };
}
} // Anonymous namespace
std::pair<std::vector<int>, int>
Opm::util::compressAndCountPartitionIDs(std::vector<int>&& parts0)
{
auto parts = std::pair<std::vector<int>, int> { std::move(parts0), 0 };
auto& [partition, num_domains] = parts;
if (! partition.empty()) {
void compressAndCountPartitionIDs(std::vector<int>& partition,
int& num_domains)
{
const auto& [low, high] = valueRange(partition);
auto seen = std::vector<bool>(high - low + 1, false);
@@ -64,6 +57,16 @@ Opm::util::compressAndCountPartitionIDs(std::vector<int>&& parts0)
}
}
}
} // Anonymous namespace
std::pair<std::vector<int>, int>
Opm::util::compressAndCountPartitionIDs(std::vector<int>&& parts0)
{
auto parts = std::pair<std::vector<int>, int> { std::move(parts0), 0 };
if (! parts.first.empty()) {
::compressAndCountPartitionIDs(parts.first, parts.second);
}
return parts;
}
@@ -72,3 +75,9 @@ std::vector<int> Opm::util::compressPartitionIDs(std::vector<int>&& parts0)
{
return compressAndCountPartitionIDs(std::move(parts0)).first;
}
void Opm::util::compressPartitionIDs(std::vector<int>& parts0)
{
[[maybe_unused]] auto num_domains = 0;
::compressAndCountPartitionIDs(parts0, num_domains);
}

1
opm/simulators/utils/compressPartition.hpp
View File

@@ -28,6 +28,7 @@ namespace Opm { namespace util {
compressAndCountPartitionIDs(std::vector<int>&& parts0);
std::vector<int> compressPartitionIDs(std::vector<int>&& parts0);
void compressPartitionIDs(std::vector<int>& parts0);
}} // namespace Opm::util
#endif // OPM_UTIL_COMPRESS_PARTITION_HPP_INCLUDED