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Two extra routines to break out SchurRedBlack on many RHS into stages to allow efficient deflation & split grid

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Split grid solver still to do.
This commit is contained in:
Peter Boyle 2021-09-15 19:24:39 +01:00
parent 402d80e197
commit c15493218d
1 changed files with 30 additions and 3 deletions
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33
Grid/algorithms/iterative/SchurRedBlack.h
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@ -132,6 +132,31 @@ namespace Grid {
(*this)(_Matrix,in,out,guess);
}
void RedBlackSource(Matrix &_Matrix, const std::vector<Field> &in, std::vector<Field> &src_o)
{
GridBase *grid = _Matrix.RedBlackGrid();
Field tmp(grid);
int nblock = in.size();
for(int b=0;b<nblock;b++){
RedBlackSource(_Matrix,in[b],tmp,src_o[b]);
}
}
// James can write his own deflated guesser
// with optimised code for the inner products
// RedBlackSolveSplitGrid();
// RedBlackSolve(_Matrix,src_o,sol_o);
void RedBlackSolution(Matrix &_Matrix, const std::vector<Field> &in, const std::vector<Field> &sol_o, std::vector<Field> &out)
{
GridBase *grid = _Matrix.RedBlackGrid();
Field tmp(grid);
int nblock = in.size();
for(int b=0;b<nblock;b++) {
pickCheckerboard(Even,tmp,in[b]);
RedBlackSolution(_Matrix,sol_o[b],tmp,out[b]);
}
}
template<class Guesser>
void operator()(Matrix &_Matrix, const std::vector<Field> &in, std::vector<Field> &out,Guesser &guess)
{
@ -150,9 +175,11 @@ namespace Grid {
////////////////////////////////////////////////
// Prepare RedBlack source
////////////////////////////////////////////////
for(int b=0;b<nblock;b++){
RedBlackSource(_Matrix,in[b],tmp,src_o[b]);
}
RedBlackSource(_Matrix,in,src_o);
// for(int b=0;b<nblock;b++){
// RedBlackSource(_Matrix,in[b],tmp,src_o[b]);
// }
////////////////////////////////////////////////
// Make the guesses
////////////////////////////////////////////////