int HYPRE_BoomerAMGSetSCommPkgSwitch

(HYPRE_Solver solver,
  double S_commpkg_switch)

(Optional) Defines the largest strength threshold for which the strength matrix S uses the communication package of the operator A.

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(Optional) Defines the largest strength threshold for which the strength matrix S uses the communication package of the operator A. If the strength threshold is larger than this values, a communication package is generated for S. This can save memory and decrease the amount of data that needs to be communicated, if S is substantially sparser than A. The default is 1.0.

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