C++ (Cpp) X10_STAR_VRの例

コード例 #1

ファイル: LLN.hpp プロジェクト: YingzhouLi/Elemental

void LLN
( UnitOrNonUnit diag, 
  F alpha,
  const AbstractDistMatrix<F>& LPre,
        AbstractDistMatrix<F>& XPre,
  bool checkIfSingular )
{
    DEBUG_CSE
    const Int n = LPre.Height();
    const Int bsize = Blocksize();
    const Grid& g = LPre.Grid();

    DistMatrixReadProxy<F,F,MC,MR> LProx( LPre );
    DistMatrixReadWriteProxy<F,F,MC,MR> XProx( XPre );
    auto& L = LProx.GetLocked();
    auto& X = XProx.Get();

    // Temporary distributions
    DistMatrix<F,STAR,STAR> L11_STAR_STAR(g), X11_STAR_STAR(g);
    DistMatrix<F,MC,  STAR> L21_MC_STAR(g);
    DistMatrix<F,STAR,MR  > X10_STAR_MR(g), X11_STAR_MR(g);
    DistMatrix<F,STAR,VR  > X10_STAR_VR(g);

    ScaleTrapezoid( alpha, LOWER, X );
    for( Int k=0; k<n; k+=bsize )
    {
        const Int nb = Min(bsize,n-k);

        const Range<Int> ind0( 0,    k    ),
                         ind1( k,    k+nb ),
                         ind2( k+nb, n    );

        auto L11 = L( ind1, ind1 );
        auto L21 = L( ind2, ind1 );

        auto X10 = X( ind1, ind0 );
        auto X11 = X( ind1, ind1 );
        auto X20 = X( ind2, ind0 );
        auto X21 = X( ind2, ind1 );

        L11_STAR_STAR = L11; 
        X11_STAR_STAR = X11; 
        X10_STAR_VR = X10;

        LocalTrsm
        ( LEFT, LOWER, NORMAL, diag, F(1), L11_STAR_STAR, X10_STAR_VR,
          checkIfSingular );
        Trstrm
        ( LEFT, LOWER, NORMAL, diag, F(1), L11_STAR_STAR, X11_STAR_STAR,
          checkIfSingular );
        X11 = X11_STAR_STAR;
        X11_STAR_MR.AlignWith( X21 );
        X11_STAR_MR = X11_STAR_STAR;
        MakeTrapezoidal( LOWER, X11_STAR_MR );

        X10_STAR_MR.AlignWith( X20 );
        X10_STAR_MR = X10_STAR_VR;
        X10 = X10_STAR_MR;
        L21_MC_STAR.AlignWith( X20 );
        L21_MC_STAR = L21;
        
        LocalGemm
        ( NORMAL, NORMAL, F(-1), L21_MC_STAR, X10_STAR_MR, F(1), X20 );
        LocalGemm
        ( NORMAL, NORMAL, F(-1), L21_MC_STAR, X11_STAR_MR, F(1), X21 );
    }
}

コード例 #2

ファイル: LLN.hpp プロジェクト: khalid-hasanov/Elemental

inline void
TrtrsmLLN
( UnitOrNonUnit diag, F alpha, const DistMatrix<F>& L, DistMatrix<F>& X,
  bool checkIfSingular )
{
#ifndef RELEASE
    CallStackEntry entry("internal::TrtrsmLLN");
#endif
    const Grid& g = L.Grid();

    // Matrix views
    DistMatrix<F>
    LTL(g), LTR(g),  L00(g), L01(g), L02(g),
        LBL(g), LBR(g),  L10(g), L11(g), L12(g),
        L20(g), L21(g), L22(g);
    DistMatrix<F>
    XTL(g), XTR(g),  X00(g), X01(g), X02(g),
        XBL(g), XBR(g),  X10(g), X11(g), X12(g),
        X20(g), X21(g), X22(g);

    // Temporary distributions
    DistMatrix<F,STAR,STAR> L11_STAR_STAR(g);
    DistMatrix<F,MC,  STAR> L21_MC_STAR(g);
    DistMatrix<F,STAR,MR  > X10_STAR_MR(g);
    DistMatrix<F,STAR,VR  > X10_STAR_VR(g);
    DistMatrix<F,STAR,MR  > X11_STAR_MR(g);
    DistMatrix<F,STAR,STAR> X11_STAR_STAR(g);

    // Start the algorithm
    ScaleTrapezoid( alpha, LOWER, X );
    LockedPartitionDownDiagonal
    ( L, LTL, LTR,
      LBL, LBR, 0 );
    PartitionDownDiagonal
    ( X, XTL, XTR,
      XBL, XBR, 0 );
    while( XBR.Height() > 0 )
    {
        LockedRepartitionDownDiagonal
        ( LTL, /**/ LTR,  L00, /**/ L01, L02,
          /*************/ /******************/
          /**/       L10, /**/ L11, L12,
          LBL, /**/ LBR,  L20, /**/ L21, L22 );

        RepartitionDownDiagonal
        ( XTL, /**/ XTR,  X00, /**/ X01, X02,
          /*************/ /******************/
          /**/       X10, /**/ X11, X12,
          XBL, /**/ XBR,  X20, /**/ X21, X22 );

        L21_MC_STAR.AlignWith( X20 );
        X10_STAR_MR.AlignWith( X20 );
        X11_STAR_MR.AlignWith( X21 );
        //--------------------------------------------------------------------//
        L11_STAR_STAR = L11;
        X11_STAR_STAR = X11;
        X10_STAR_VR = X10;

        LocalTrsm
        ( LEFT, LOWER, NORMAL, diag, F(1), L11_STAR_STAR, X10_STAR_VR,
          checkIfSingular );
        LocalTrtrsm
        ( LEFT, LOWER, NORMAL, diag, F(1), L11_STAR_STAR, X11_STAR_STAR,
          checkIfSingular );
        X11 = X11_STAR_STAR;
        X11_STAR_MR = X11_STAR_STAR;
        MakeTriangular( LOWER, X11_STAR_MR );

        X10_STAR_MR = X10_STAR_VR;
        X10 = X10_STAR_MR;
        L21_MC_STAR = L21;

        LocalGemm
        ( NORMAL, NORMAL, F(-1), L21_MC_STAR, X10_STAR_MR, F(1), X20 );
        LocalGemm
        ( NORMAL, NORMAL, F(-1), L21_MC_STAR, X11_STAR_MR, F(1), X21 );
        //--------------------------------------------------------------------//

        SlideLockedPartitionDownDiagonal
        ( LTL, /**/ LTR,  L00, L01, /**/ L02,
          /**/       L10, L11, /**/ L12,
          /*************/ /******************/
          LBL, /**/ LBR,  L20, L21, /**/ L22 );

        SlidePartitionDownDiagonal
        ( XTL, /**/ XTR,  X00, X01, /**/ X02,
          /**/       X10, X11, /**/ X12,
          /*************/ /******************/
          XBL, /**/ XBR,  X20, X21, /**/ X22 );
    }
}