(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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