ElemDiagnostics class used to compute diagnostics while integrating PDEs.
- static void registerReducers()
- Configure Charm++ custom reduction types initiated from this class.
static void inciter::
Configure Charm++ custom reduction types initiated from this class.
This routine is supposed to be called from a Charm++ nodeinit routine. Since the runtime system executes nodeinit routines exactly once on every logical node early on in the Charm++ init sequence, they must be static as they are called without an object. See also: Section "Initializations at Program Startup" at in the Charm++ manual http:/
ElemDiagnostics:: compute(Discretization& d,
const std::size_t nchGhost,
const tk::Fields& geoElem,
const tk::Fields& u) const
Compute diagnostics, e.g., residuals, norms of errors, etc.
|d in||Discretization base class to read from|
|nchGhost in||Number of chare boundary ghost elements|
|geoElem in||Element geometry|
|u in||Current solution vector|
|Returns||True if diagnostics have been computed|
Diagnostics are defined as some norm, e.g., L2 norm, of a quantity, computed in mesh elements, A, as ||A||_2 = sqrt[ sum_i(A_i)^2 V_i ], where the sum is taken over all mesh elements and V_i is the cell volume. We send multiple sets of quantities to the host for aggregation across the whole mesh. The final aggregated solution will end up in Transporter::