[Bug 198686] New port: benchmarks/sweep3d Heart of a real ASCI application

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198686

            Bug ID: 198686
           Summary: New port: benchmarks/sweep3d Heart of a real ASCI
                    application
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: freebsd-ports-bugs at FreeBSD.org
          Reporter: heiner at bilch.com

Created attachment 154487
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=154487&action=edit
Sweep3d port shell archive

The benchmark code SWEEP3D represents the heart of a real ASCI
application. It solves a 1-group time-independent discrete ordinates
(Sn) 3D cartesian (XYZ) geometry neutron transport problem. The
XYZ geometry is represented by an IJK logically rectangular grid of
cells. The angular dependence is handled by discrete angles with a
spherical harmonics treatment for the scattering source. The solution
involves two steps: the streaming operator is solved by sweeps for
each angle and the scattering operator is solved iteratively.

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