e4e3e411fc
Includes all MPI functions supported by Open MPI, including MPI-3 functions (as of about 2 weeks ago). Many changes compared to the prior generation of Java bindings; not much is left from the prior generation, actually. The changes include (but are not limited to): * Add support for more than just a subset of MPI-1 functions * Use typical Java case for symbol names * Support Java Direct buffers (giving darn-near "native C" performance) * Support "type struct" better than the prior generation * Make more of an effort for the Java bindings to be a thin layer over the back-end C bindings * ...and more A proper README with more information about what is supported, how to use these bindings, etc. will be committed shortly. This commit was SVN r29263.
90 строки
1.9 KiB
Java
90 строки
1.9 KiB
Java
package mpi;
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/**
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* Adjacency information for a distributed graph topology.
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*/
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public final class DistGraphNeighbors
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{
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private final int[] sources, sourceWeights, destinations, destWeights;
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private final boolean weighted;
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protected DistGraphNeighbors(
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int[] sources, int[] sourceWeights,
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int[] destinations, int[] destWeights, boolean weighted)
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{
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this.sources = sources;
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this.sourceWeights = sourceWeights;
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this.destinations = destinations;
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this.destWeights = destWeights;
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this.weighted = weighted;
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}
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/**
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* Gets the number of edges into this process.
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* @return number of edges into this process
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*/
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public int getInDegree()
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{
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return sources.length;
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}
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/**
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* Gets the number of edges out of this process.
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* @return number of edges out of this process
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*/
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public int getOutDegree()
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{
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return destinations.length;
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}
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/**
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* Returns false if {@code MPI_UNWEIGHTED} was supplied during creation.
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* @return false if {@code MPI_UNWEIGHTED} was supplied, true otherwise
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*/
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public boolean isWeighted()
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{
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return weighted;
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}
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/**
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* Gets a process for which the calling processs is a destination.
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* @param i source index
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* @return process for which the calling processs is a destination
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*/
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public int getSource(int i)
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{
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return sources[i];
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}
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/**
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* Gets the weight of an edge into the calling process.
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* @param i source index
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* @return weight of the edge into the calling process
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*/
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public int getSourceWeight(int i)
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{
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return sourceWeights[i];
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}
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/**
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* Gets a process for which the calling process is a source
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* @param i destination index
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* @return process for which the calling process is a source
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*/
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public int getDestination(int i)
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{
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return destinations[i];
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}
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/**
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* Gets the weight of an edge out of the calling process.
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* @param i destination index
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* @return weight of an edge out of the calling process
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*/
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public int getDestinationWeight(int i)
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{
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return destWeights[i];
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}
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} // DistGraphNeighbors
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