Provided by: metis_5.1.0.dfsg-5_amd64

**NAME**

mpmetis - manual page for mpmetis 5.1.0

**SYNOPSIS**

mpmetis[options]meshfilenparts

**DESCRIPTION**

Required parameters meshfile Stores the mesh to be partitioned. nparts The number of partitions to split the mesh. Optional parameters-gtype=stringSpecifies the graph to be used for computing the partitioning The possible values are: dual - Partition the dual graph of the mesh [default] nodal - Partition the nodal graph of the mesh-ptype=stringSpecifies the scheme to be used for computing the k-way partitioning. The possible values are: rb - Recursive bisectioning kway - Direct k-way partitioning [default]-ctype=stringSpecifies the scheme to be used to match the vertices of the graph during the coarsening. The possible values are: rm - Random matching shem - Sorted heavy-edge matching [default]-iptype=string[applies only when-ptype=rb]Specifies the scheme to be used to compute the initial partitioning of the graph. The possible values are: grow - Grow a bisection using a greedy strategy [default] random - Compute a bisection at random-objtype=string[applies only when-ptype=kway]Specifies the objective that the partitioning routines will optimize. The possible values are: cut - Minimize the edgecut [default] vol - Minimize the total communication volume-contig[applies only when-ptype=kway]Specifies that the partitioning routines should try to produce partitions that are contiguous. Note that if the input graph is not connected this option is ignored.-minconn[applies only when-ptype=kway]Specifies that the partitioning routines should try to minimize the maximum degree of the subdomain graph, i.e., the graph in which each partition is a node, and edges connect subdomains with a shared interface.-tpwgts=filenameSpecifies the name of the file that stores the target weights for each partition. By default, all partitions are assumed to be of the same size.-ufactor=intSpecifies the maximum allowed load imbalance among the partitions. A value of x indicates that the allowed load imbalance is 1+x/1000. For ptype=rb, the load imbalance is measured as the ratio of the 2*max(left,right)/(left+right), where left and right are the sizes of the respective partitions at each bisection. For ptype=kway, the load imbalance is measured as the ratio of max_i(pwgts[i])/avgpwgt, where pwgts[i] is the weight of the ith partition and avgpwgt is the sum of the total vertex weights divided by the number of partitions requested. For ptype=rb, the default value is 1 (i.e., load imbalance of 1.001). For ptype=kway, the default value is 30 (i.e., load imbalance of 1.03).-ncommon=intSpecifies the common number of nodes that two elements must have in order to put an edge between them in the dual graph. Default is 1.-niter=intSpecifies the number of iterations for the refinement algorithms at each stage of the uncoarsening process. Default is 10.-ncuts=intSpecifies the number of different partitionings that it will compute. The final partitioning is the one that achieves the best edgecut or communication volume. Default is 1.-nooutputSpecifies that no partitioning file should be generated.-seed=intSelects the seed of the random number generator.-dbglvl=intSelects the dbglvl.-helpPrints this message.

**SEE** **ALSO**

The full documentation formpmetisis maintained as a Texinfo manual. If theinfoandmpmetisprograms are properly installed at your site, the commandinfompmetisshould give you access to the complete manual.