Enable Zoltan-Based In-Process Subdomain Partitioning#4638
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I'm creating this in draft mode for two reasons
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Should probably be handled with fixing update() for preconditioner wrapper instead, making a new wrapper for those preconditioners that need to rebuild.
1. The order of options has been revised slightly to be more logical, and the order is now the same in all 6 places they appear: Declaration of parameters, definition of defaults, struct definition, init(), registerParameters() and reset(). 2. The reset() function now sets the members to the corresponding parameter defaults. 3. Removed some unused members and parameters.
1. A new constructor taking the FlowLinearSolverParameters object directly. 2. A new overload of prepare() taking the matrix directly rather than the SparseMatrixAdapter class.
Tested only for sequential running (mpirun -np 1) at the moment. Intended to replace the original partitioning scheme based on a user-provided input file named partition.txt. There are two new user-controlled runtime parameters NumLocalDomains (--num-local-domains): Positive integer. The partitioner will divide the domain into this many non-overlapping subdomains and run the non-linear domain decomposition method on those LocalDomainsPartitioningImbalance (--local-domains-partitioning-imbalance`): Floating-point value >= 1 which controls Zoltan's imbalance tolerance. A value of 1.03 corresponds to a tolerance of three percent domain imbalance These parameters are not queried unless the run uses the NLDD non-linear solver.
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Tested only for sequential running (
mpirun -np 1) at the moment. Intended to replace the original partitioning scheme based on a user-provided input file namedpartition.txt.There are two new user-controlled runtime parameters
NumLocalDomains(--num-local-domains): Positive integer. The partitioner will divide the domain into this many non-overlapping subdomains and run the non-linear domain decomposition method on thoseLocalDomainsPartitioningImbalance(--local-domains-partitioning-imbalance`): Floating-point valueThese parameters are not queried unless the run uses the NLDD non-linear solver.