pzungqrrh.c 5.57 KB
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/**
 *
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 * @copyright (c) 2009-2014 The University of Tennessee and The University
 *                          of Tennessee Research Foundation.
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 *                          All rights reserved.
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 * @copyright (c) 2012-2016 Inria. All rights reserved.
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 * @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
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 *
 **/

/**
 *
 * @file pzungqrrh.c
 *
 *  MORSE auxiliary routines
 *  MORSE is a software package provided by Univ. of Tennessee,
 *  Univ. of California Berkeley and Univ. of Colorado Denver
 *
 * @version 2.5.0
 * @comment This file has been automatically generated
 *          from Plasma 2.5.0 for MORSE 1.0.0
 * @author Hatem Ltaief
 * @author Jakub Kurzak
 * @author Dulceneia Becker
 * @author Mathieu Faverge
 * @author Emmanuel Agullo
 * @author Cedric Castagnede
 * @date 2010-11-15
 * @precisions normal z -> s d c
 *
 **/
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#include "control/common.h"
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#define A(m,n) A,  (m),  (n)
#define Q(m,n) Q,  (m),  (n)
#define T(m,n) T,  (m),  (n)
#define T2(m,n) T,  (m),  (n)+(A->nt)
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#if defined(CHAMELEON_COPY_DIAG)
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#define D(m,n) D, ((m)/BS), 0
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#else
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#define D(m,n) A, (m), (n)
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#endif
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/**
 *  Parallel construction of Q using tile V (application to identity;
 *  reduction Householder) - dynamic scheduling
 **/
void morse_pzungqrrh(MORSE_desc_t *A, MORSE_desc_t *Q,
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                     MORSE_desc_t *T,  MORSE_desc_t *D, int BS,
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                     MORSE_sequence_t *sequence, MORSE_request_t *request)
{
    MORSE_context_t *morse;
    MORSE_option_t options;
    size_t ws_worker = 0;
    size_t ws_host = 0;

    int k, m, n;
    int K, M, RD, lastRD;
    int ldaM, ldam, ldaMRD;
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    int ldqM, ldqm, ldqMRD;
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    int tempkn, tempMm, tempnn, tempmm, tempMRDm, tempkmin;
    int ib;

    morse = morse_context_self();
    if (sequence->status != MORSE_SUCCESS)
        return;
    RUNTIME_options_init(&options, morse, sequence, request);

    ib = MORSE_IB;

    /*
     * zunmqr = A->nb * ib
     * ztsmqr = A->nb * ib
     * zttmqr = A->nb * ib
     */
    ws_worker = A->nb * ib;

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#if defined(CHAMELEON_USE_CUDA)
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    /* Worker space
     *
     * zunmqr = A->nb * ib
     * ztsmqr = 2 * A->nb * ib
     */
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    ws_worker = chameleon_max( ws_worker, ib * A->nb * 2 );
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#endif

    ws_worker *= sizeof(MORSE_Complex64_t);
    ws_host   *= sizeof(MORSE_Complex64_t);

    RUNTIME_options_ws_alloc( &options, ws_worker, ws_host );

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    K = chameleon_min(A->mt, A->nt);
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    for (k = K-1; k >= 0; k--) {
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        RUNTIME_iteration_push(morse, k);
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        tempkn = k == A->nt-1 ? A->n-k*A->nb : A->nb;
        lastRD = 0;
        for (RD = BS; RD < A->mt-k; RD *= 2)
            lastRD = RD;
        for (RD = lastRD; RD >= BS; RD /= 2) {
            for (M = k; M+RD < A->mt; M += 2*RD) {
                tempMRDm = M+RD == A->mt-1 ? A->m-(M+RD)*A->mb : A->mb;
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                ldqM   = BLKLDD(Q, M   );
                ldqMRD = BLKLDD(Q, M+RD);
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                ldaMRD = BLKLDD(A, M+RD);
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                for (n = k; n < Q->nt; n++) {
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                    tempnn = n == Q->nt-1 ? Q->n-n*Q->nb : Q->nb;
                    MORSE_TASK_zttmqr(
                        &options,
                        MorseLeft, MorseNoTrans,
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                        Q->mb, tempnn, tempMRDm, tempnn,
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                        tempkn, ib, T->nb,
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                        Q (M,    n), ldqM,
                        Q (M+RD, n), ldqMRD,
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                        A (M+RD, k), ldaMRD,
                        T2(M+RD, k), T->mb);
                }
            }
        }
        for (M = k; M < A->mt; M += BS) {
            tempMm   = M == A->mt-1 ? A->m-M*A->mb : A->mb;
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            tempkmin = chameleon_min(tempMm, tempkn);
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            ldaM = BLKLDD(A, M);
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            ldqM = BLKLDD(Q, M);
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            for (m = chameleon_min(M+BS, A->mt)-1; m > M; m--) {
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                tempmm = m == A->mt-1 ? A->m-m*A->mb : A->mb;
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                ldqm = BLKLDD(Q, m);
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                ldam = BLKLDD(A, m);

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                for (n = k; n < Q->nt; n++) {
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                    tempnn = n == Q->nt-1 ? Q->n-n*Q->nb : Q->nb;
                    MORSE_TASK_ztsmqr(
                        &options,
                        MorseLeft, MorseNoTrans,
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                        Q->mb, tempnn, tempmm, tempnn,
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                        tempkn, ib, T->nb,
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                        Q(M, n), ldqM,
                        Q(m, n), ldqm,
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                        A(m, k), ldam,
                        T(m, k), T->mb);
                }
            }
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#if defined(CHAMELEON_COPY_DIAG)
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            MORSE_TASK_zlacpy(
                &options,
                MorseLower, tempMm, tempkmin, A->nb,
                A(M, k), ldaM,
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                D(M, k), ldaM );
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#if defined(CHAMELEON_USE_CUDA)
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            MORSE_TASK_zlaset(
                &options,
                MorseUpper, tempMm, tempkmin,
                0., 1.,
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                D(M, k), ldaM );
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#endif
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#endif
            for (n = k; n < Q->nt; n++) {
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                tempnn = n == Q->nt-1 ? Q->n-n*Q->nb : Q->nb;
                MORSE_TASK_zunmqr(
                    &options,
                    MorseLeft, MorseNoTrans,
                    tempMm, tempnn,
                    tempkmin, ib, T->nb,
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                    D(M, k), ldaM,
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                    T(M, k), T->mb,
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                    Q(M, n), ldqM);
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            }
        }
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        RUNTIME_iteration_pop(morse);
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    }
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    MORSE_TASK_flush_desc( &options, MorseUpperLower, A );
    MORSE_TASK_flush_desc( &options, MorseUpperLower, Q );
    MORSE_TASK_flush_desc( &options, MorseLower,      T );
    MORSE_TASK_flush_desc( &options, MorseUpperLower, D );
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    RUNTIME_options_ws_free(&options);
    RUNTIME_options_finalize(&options, morse);
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    MORSE_TASK_flush_all();
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    (void)D;
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}