Specify the processor array to be used in a parallel focusing
(mg-para) calculation. The product npx × npy × npz should be less than or equal
to the total number of processors with which APBS
was invoked (usually via mpirun). If more processors are provided at
invocation than actually used during the run, the extra processors are
not used in the calculation. The processors are tiled across the domain
in a Cartesian fashion with a specified amount of overlap (see ofrac)
between each processor to ensure continuity of the solution. Each
processor's subdomain will contain the number of grid points specified
by the dime keyword. The syntax is:
where npx npy npz are the integer number of processors to be used in the x-, y- and z-directions of the system.
For broad spatial support of the splines, every charge included in partition needs to be at least 1
grid space (chgm spl0), 2 grid spaces (chgm spl2), or 3 grid spaces (chgm spl4) away from the
partition boundary.See also: ofrac
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