Ardra ran largest ever neutron transport calculation on ASCI Blue Pacific SST

• 15 billion unknowns

  • 23 energy groups
  • 160 million zones
  • P1 approximation
  • first scatter pt source

• BiCGSTAB iteration

• 3840 processors

• 27 hours

We have since run an even larger calculation: 27B unknowns, 5760 processors, 4 hours

Visualization of neutron scalar flux for highest energy group

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