void TransposeContract
( const ElementalMatrix<T>& A,
ElementalMatrix<T>& B, bool conjugate )
{
EL_DEBUG_CSE
const Dist U = B.ColDist();
const Dist V = B.RowDist();
if( A.ColDist() == V && A.RowDist() == Partial(U) )
{
Transpose( A, B, conjugate );
}
else
{
unique_ptr<ElementalMatrix<T>>
ASumFilt( B.ConstructTranspose(B.Grid(),B.Root()) );
if( B.ColConstrained() )
ASumFilt->AlignRowsWith( B, true );
if( B.RowConstrained() )
ASumFilt->AlignColsWith( B, true );
Contract( A, *ASumFilt );
if( !B.ColConstrained() )
B.AlignColsWith( *ASumFilt, false );
if( !B.RowConstrained() )
B.AlignRowsWith( *ASumFilt, false );
// We should have ensured that the alignments match
B.Resize( A.Width(), A.Height() );
Transpose( ASumFilt->LockedMatrix(), B.Matrix(), conjugate );
}
}
void TransposeAxpyContract
( T alpha, const ElementalMatrix<T>& A,
ElementalMatrix<T>& B, bool conjugate )
{
EL_DEBUG_CSE
const Dist U = B.ColDist();
const Dist V = B.RowDist();
if( A.ColDist() == V && A.RowDist() == U )
{
TransposeAxpy( alpha, A, B, conjugate );
}
else if( (A.ColDist() == V && A.RowDist() == Partial(U)) ||
(A.ColDist() == V && A.RowDist() == Collect(U)) ||
(A.RowDist() == U && A.ColDist() == Partial(V)) ||
(A.RowDist() == U && A.ColDist() == Collect(V)) )
{
unique_ptr<ElementalMatrix<T>>
ASumFilt( B.ConstructTranspose(B.Grid(),B.Root()) );
if( B.ColConstrained() )
ASumFilt->AlignRowsWith( B, true );
if( B.RowConstrained() )
ASumFilt->AlignColsWith( B, true );
Contract( A, *ASumFilt );
if( !B.ColConstrained() )
B.AlignColsWith( *ASumFilt, false );
if( !B.RowConstrained() )
B.AlignRowsWith( *ASumFilt, false );
// We should have ensured that the alignments are compatible
TransposeAxpy( alpha, ASumFilt->LockedMatrix(), B.Matrix(), conjugate );
}
else
LogicError("Incompatible distributions");
}
void Contract
( const ElementalMatrix<T>& A,
ElementalMatrix<T>& B )
{
DEBUG_ONLY(CSE cse("Contract"))
AssertSameGrids( A, B );
const Dist U = B.ColDist();
const Dist V = B.RowDist();
// TODO: Shorten this implementation?
if( A.ColDist() == U && A.RowDist() == V )
{
Copy( A, B );
}
else if( A.ColDist() == U && A.RowDist() == Partial(V) )
{
B.AlignAndResize
( A.ColAlign(), A.RowAlign(), A.Height(), A.Width(), false, false );
Zeros( B.Matrix(), B.LocalHeight(), B.LocalWidth() );
AxpyContract( T(1), A, B );
}
else if( A.ColDist() == Partial(U) && A.RowDist() == V )
{
B.AlignAndResize
( A.ColAlign(), A.RowAlign(), A.Height(), A.Width(), false, false );
Zeros( B.Matrix(), B.LocalHeight(), B.LocalWidth() );
AxpyContract( T(1), A, B );
}
else if( A.ColDist() == U && A.RowDist() == Collect(V) )
{
B.AlignColsAndResize
( A.ColAlign(), A.Height(), A.Width(), false, false );
Zeros( B.Matrix(), B.LocalHeight(), B.LocalWidth() );
AxpyContract( T(1), A, B );
}
else if( A.ColDist() == Collect(U) && A.RowDist() == V )
{
B.AlignRowsAndResize
( A.RowAlign(), A.Height(), A.Width(), false, false );
Zeros( B.Matrix(), B.LocalHeight(), B.LocalWidth() );
AxpyContract( T(1), A, B );
}
else if( A.ColDist() == Collect(U) && A.RowDist() == Collect(V) )
{
Zeros( B, A.Height(), A.Width() );
AxpyContract( T(1), A, B );
}
else
LogicError("Incompatible distributions");
}