SST  9.1.0
StructuralSimulationToolkit
Public Member Functions | Data Fields
SST::IMPL::Partition::SSTLinearPartition Class Reference

Performs a linear partition scheme of an SST simulation configuration. More...

#include <linpart.h>

Inheritance diagram for SST::IMPL::Partition::SSTLinearPartition:
SST::Partition::SSTPartitioner

Public Member Functions

 SSTLinearPartition (RankInfo rankCount, RankInfo my_rank, int verbosity)
 Creates a new linear partition scheme. More...
 
void performPartition (PartitionGraph *graph) override
 Performs a partition of an SST simulation configuration. More...
 
void performPartition (ConfigGraph *graph) override
 Function to be overridden by subclasses. More...
 
bool requiresConfigGraph () override
 
bool spawnOnAllRanks () override
 
- Public Member Functions inherited from SST::Partition::SSTPartitioner
virtual void performPartition (PartitionGraph *UNUSED(graph))
 Function to be overridden by subclasses. More...
 
virtual void performPartition (ConfigGraph *UNUSED(graph))
 Function to be overridden by subclasses. More...
 

Data Fields

SST_ELI_REGISTER_PARTITIONER(SSTLinearPartition,"sst","linear",
SST_ELI_ELEMENT_VERSION(1,
0, 0),"Partitions components
by dividing Component ID space
into roughly equal portions.
Components with sequential IDs
will be placed close together.")
protected Output * 		partOutput
 Number of ranks in the simulation. More...
 

Detailed Description

Performs a linear partition scheme of an SST simulation configuration.

In this scheme a list of components (supplied as a graph) are grouped by slicing the list into approximately equal parts. A "part" is generated for each MPI rank performing the simulation. This means Components with sequential ids will be placed close together. In general this scheme provides a very effective partition for most parallel simulations which generate man similar components of interest close together in the input Python configuration. It is also very fast to compute a linear partition scheme. For more aggressive partition schemes users should try either a simple or Zoltan-based partitioner.

Constructor & Destructor Documentation

SSTLinearPartition::SSTLinearPartition ( RankInfo  rankCount,
RankInfo  my_rank,
int  verbosity 
)

Creates a new linear partition scheme.

Parameters
mpiRankCountNumber of MPI ranks in the simulation
verbosityThe level of information to output

References SST::Output::STDOUT.

Member Function Documentation

void SSTLinearPartition::performPartition ( PartitionGraph *  graph)
overridevirtual

Performs a partition of an SST simulation configuration.

Parameters
graphThe simulation configuration to partition

Reimplemented from SST::Partition::SSTPartitioner.

void SST::IMPL::Partition::SSTLinearPartition::performPartition ( ConfigGraph *  graph)
inlineoverridevirtual

Function to be overridden by subclasses.

Performs the partitioning of the Graph using the ConfigGraph object. The consequence of using ConfigGraphs is that no-cut links are not supported.

Result of this function is that every ConfigComponent in graph has a Rank applied to it.

Reimplemented from SST::Partition::SSTPartitioner.

References SST::Partition::SSTPartitioner::performPartition().

Field Documentation

SST_ELI_REGISTER_PARTITIONER ( SSTLinearPartition, "sst", "linear", SST_ELI_ELEMENT_VERSION(1,0,0), "Partitions components by dividing Component ID space into roughly equal portions. Components with sequential IDs will be placed close together.") protected Output* SST::IMPL::Partition::SSTLinearPartition::partOutput

Number of ranks in the simulation.

Output object to print partitioning information

The documentation for this class was generated from the following files: