|-bval Set maximum load imbalance ratio for graph partitioning or static mapping. When programs are used as clustering tools, this parameter sets the maximum load imbalance ratio for recursive bipartitions. Exclusive with the -m option.|
Choose default mapping strategy according to one or
several options among:
-h Display some help. -mstrat Use parallel mapping strategy strat (see PT-Scotch users manual for more information). -q (for dgpart) -qpwght (for dgmap) Use the programs as graph clustering tools instead of static mapping or graph partitioning tools. For dgpart, the number of parts will become the maximum cluster weight. For dgmap, this number pwght has to be passed after the option. -rpnum Set root process for centralized files (default is 0). -V Display program version and copyright. -vverb Set verbose mode to verb. It is a set of one of more characters which can be:
m mapping information. s strategy information. t timing information.
At the time being (version 5.1), dgmap cannot compute full static mappings as gmap(1) does, but only partitions (that is, mappings onto unweighted or weighted complete graphs). Target architectures other than the cmplt and wcmplt ones will lead to an error message.
Run dgpart on 5 processing elements to compute a partition into 7 parts of graph brol.grf and save the resulting ordering to file brol.map.
$ mpirun -np 5 dgpart 7 brol.grf brol.mapRun dgpart on 5 processing elements to partition into 7 parts the distributed graph stored on graph fragment files brol5-0.dgr to brol5-4.dgr, and save the resulting mapping to file brol.map (see dgscat(1) for an explanation of the %p and %r sequences in names of distributed graph fragments).
$ mpirun -np 5 dgpart 7 brol%p-%r.dgr brol.map
dgtst(1), dgscat(1), amk_grf(1), acpl(1), gmap(1), gmtst(1).
PT-Scotch users manual.
Francois Pellegrini <email@example.com>
|DGMAP (1)||September 01, 2011|