MFRPtr
SpikeSolver::solve(LinearSystem & ls)
{
ls.getMatrix().computeResidual(ls.getDelta(),
ls.getB(),
ls.getResidual());
MFRPtr rNorm0(ls.getResidual().getOneNorm());
#ifdef FVM_PARALLEL
if (verbosity >0 && MPI::COMM_WORLD.Get_rank() == 0 )
cout << "0: " << *rNorm0 << "procID = " << MPI::COMM_WORLD.Get_rank() << endl;
#endif
#ifndef FVM_PARALLEL
if ( verbosity > 0 )
cout << "0: " << *rNorm0 << endl;
#endif
if (*rNorm0 < absoluteTolerance )
return rNorm0;
for(int i=1; i<nMaxIterations; i++)
{
doSweeps(ls,1);
ls.getMatrix().computeResidual(ls.getDelta(),
ls.getB(),
ls.getResidual());
MFRPtr rNorm(ls.getResidual().getOneNorm());
MFRPtr normRatio((*rNorm)/(*rNorm0));
#ifndef FVM_PARALLEL
if (verbosity >0 )
cout << i << ": " << *rNorm << endl;
#endif
#ifdef FVM_PARALLEL
if (*rNorm < absoluteTolerance || *normRatio < relativeTolerance || i == nMaxIterations-1)
if (verbosity >0 && MPI::COMM_WORLD.Get_rank() == 0 )
cout <<i << ": " << "procID = " << MPI::COMM_WORLD.Get_rank() << *rNorm << endl;
#endif
if (*rNorm < absoluteTolerance || *normRatio < relativeTolerance)
break;
}
return rNorm0;
}
void
SpikeSolver::doSweeps(LinearSystem& ls, const int nSweeps)
{
const MultiFieldMatrix& m = ls.getMatrix();
MultiField& delta = ls.getDelta();
const MultiField& b = ls.getB();
MultiField& r = ls.getResidual();
for(int i=0; i<nSweeps; i++)
{
m.spikeSolve(delta,b,r,_spikeStorage);
}
}