add cudablas library to make calls to cuda kernels (cublas and magma)

cudablas/CMakeLists.txt

+###
+#
+# @copyright (c) 2009-2014 The University of Tennessee and The University
+#                          of Tennessee Research Foundation.
+#                          All rights reserved.
+# @copyright (c) 2012-2014 Inria. All rights reserved.
+# @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
+#
+###
+#
+#  @file CMakeLists.txt
+#
+#  @project MORSE
+#  MORSE is a software package provided by:
+#     Inria Bordeaux - Sud-Ouest,
+#     Univ. of Tennessee,
+#     King Abdullah Univesity of Science and Technology
+#     Univ. of California Berkeley,
+#     Univ. of Colorado Denver.
+#
+#  @version 0.9.0
+#  @author Cedric Castagnede
+#  @author Emmanuel Agullo
+#  @author Mathieu Faverge
+#  @date 13-07-2012
+#
+###
+
+add_subdirectory(include)
+add_subdirectory(compute)
+#add_subdirectory(eztrace_module)
+
+###
+### END CMakeLists.txt
+###

cudablas/compute/CMakeLists.txt

+###
+#
+# @copyright (c) 2009-2014 The University of Tennessee and The University
+#                          of Tennessee Research Foundation.
+#                          All rights reserved.
+# @copyright (c) 2012-2014 Inria. All rights reserved.
+# @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
+#
+###
+#
+#  @file CMakeLists.txt
+#
+#  @project MORSE
+#  MORSE is a software package provided by:
+#     Inria Bordeaux - Sud-Ouest,
+#     Univ. of Tennessee,
+#     King Abdullah Univesity of Science and Technology
+#     Univ. of California Berkeley,
+#     Univ. of Colorado Denver.
+#
+#  @author Florent Pruvost
+#  @date 16-09-2015
+#
+###
+
+# Generate the morse sources for all possible precisions
+# ------------------------------------------------------
+set(CUDABLAS_SRCS_GENERATED "")
+set(ZSRC
+    cuda_zgelqt.c
+    #cuda_zgemerge.c
+    cuda_zgeqrt.c
+    cuda_zgessm.c
+    cuda_zgetrf.c
+    cuda_zlauum.c
+    #cuda_zparfb.c
+    cuda_zpotrf.c
+    cuda_zssssm.c
+    cuda_ztrtri.c
+    cuda_ztslqt.c
+    cuda_ztsmlq.c
+    cuda_ztsmqr.c
+    cuda_ztsqrt.c
+    cuda_ztstrf.c
+    cuda_zunmlqt.c
+    cuda_zunmqrt.c
+    )
+
+precisions_rules_py(CUDABLAS_SRCS_GENERATED "${ZSRC}"
+                    PRECISIONS "${CHAMELEON_PRECISION}")
+
+set(CUDABLAS_SRCS
+    ${CUDABLAS_SRCS_GENERATED}
+    )
+
+# Compile step
+# ------------
+add_library(cudablas ${CUDABLAS_SRCS})
+add_dependencies(cudablas cudablas_include)
+set_property(TARGET cudablas PROPERTY LINKER_LANGUAGE Fortran)
+
+# installation
+# ------------
+install(TARGETS cudablas
+        DESTINATION lib)
+
+###
+### END CMakeLists.txt
+###

cudablas/compute/cuda_zgelqt.c

+/**
+ *
+ * @copyright (c) 2009-2014 The University of Tennessee and The University
+ *                          of Tennessee Research Foundation.
+ *                          All rights reserved.
+ * @copyright (c) 2012-2015 Inria. All rights reserved.
+ * @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
+ *
+ **/
+
+/**
+ *
+ * @file cuda_zgelqt.c
+ *
+ *  MORSE cudablas kernel
+ *  MORSE is a software package provided by Univ. of Tennessee,
+ *  Univ. of California Berkeley and Univ. of Colorado Denver,
+ *  and INRIA Bordeaux Sud-Ouest
+ *
+ * @author Florent Pruvost
+ * @date 2015-09-16
+ * @precisions normal z -> c d s
+ *
+ **/
+#include "cudablas/include/cudablas.h"
+
+#if defined(CHAMELEON_USE_MAGMA)
+int CUDA_zgelqt(
+        magma_int_t m, magma_int_t n, magma_int_t nb,
+        magmaDoubleComplex *da, magma_int_t ldda,
+        magmaDoubleComplex *v,  magma_int_t ldv,
+        magmaDoubleComplex *dt, magma_int_t lddt,
+        magmaDoubleComplex *t,  magma_int_t ldt,
+        magmaDoubleComplex *dd,
+        magmaDoubleComplex *d,  magma_int_t ldd,
+        magmaDoubleComplex *tau,
+        magmaDoubleComplex *hwork,
+        magmaDoubleComplex *dwork,
+        CUstream stream)
+{
+#define da_ref(a_1,a_2) ( da+(a_2)*(ldda) + (a_1))
+#define v_ref(a_1,a_2)  ( v+(a_2)*(ldv) + (a_1))
+#define dt_ref(a_1,a_2) ( dt+(a_2)*(lddt) + (a_1))
+#define t_ref(a_1,a_2)  ( t+(a_2)*(ldt) + (a_1))
+
+    int i, k, ib, lddwork, old_i, old_ib, rows, cols;
+    double _Complex one=1.;
+
+    if (m < 0) {
+    return -1;
+    } else if (n < 0) {
+    return -2;
+    } else if (ldda < max(1,m)) {
+    return -4;
+    }
+
+    k = min(m,n);
+    if (k == 0) {
+    hwork[0] = *((magmaDoubleComplex*) &one);
+    return MAGMA_SUCCESS;
+    }
+
+    lddwork= m;
+
+    /* lower parts of little T must be zero: memset to 0 for simplicity */
+    memset(t_ref(0,0), 0, nb*n*sizeof(magmaDoubleComplex));
+    cudaMemset(dt_ref(0,0), 0, nb*n*sizeof(magmaDoubleComplex));
+
+    /* copy first panel of A on the host */
+    cublasGetMatrix(min(m, nb), n, sizeof(magmaDoubleComplex),
+              da_ref(0, 0), ldda,
+              v, ldv);
+
+    /* Use blocked code initially */
+    for (i = 0; i < k; i += nb) {
+
+    ib = min(k-i, nb);
+    if (i+nb >= m) ib = min(m-i, nb);
+    cols = n-i;
+
+    if (i > 0){
+
+      /* copy panel of A from device to host */
+      cublasGetMatrix(ib, n, sizeof(magmaDoubleComplex),
+                      da_ref(i, 0), ldda,
+                      v, ldv);
+
+      /* Apply H' to A(i+2*ib:m, i:n) from the right */
+      rows = m-old_i-2*old_ib;
+      if (rows > 0){
+          magma_zlarfb_gpu( MagmaRight, MagmaNoTrans, MagmaForward, MagmaRowwise,
+                            rows, n-old_i, old_ib,
+                            da_ref(old_i, old_i), ldda, dt_ref(0,old_i), lddt,
+                            da_ref(old_i+2*old_ib, old_i), ldda,
+                            dwork, lddwork);
+      }
+
+      /* copy the lower diag tile into d_A */
+      CUDA_zgemerge(MagmaRight, MagmaUnit, old_ib, old_ib,
+                    dd, ldd, da_ref(old_i, old_i), ldda, stream);
+
+    }
+
+    /* Form the triangular factor of the block reflector on the host
+    H = H'(i+ib-1) . . . H(i+1) H(i) */
+    CORE_zgelqt(ib, cols, ib,
+              (double _Complex*) v_ref(0,i), ldv,
+              (double _Complex*) t_ref(0,0), ldt,
+              (double _Complex*) tau+i,
+              (double _Complex*) hwork);
+
+    if ( i + ib < m ){
+      /* put 0s in the lower triangular part of a panel (and 1s on the
+       diagonal); copy the lower triangular in d */
+      CORE_zgesplit(MorseRight, MorseUnit, ib, min(cols,ib),
+                    (double _Complex*) v_ref(0,i), ldv,
+                    (double _Complex*) d, ldd);
+
+      /* copy from host to device a tile diag */
+      cublasSetMatrix( ib, min(cols,ib), sizeof(magmaDoubleComplex),
+                       d, ldd, dd, ldd );
+    }
+
+    /* Send the triangular factor T to the GPU */
+    cublasSetMatrix( ib, ib, sizeof(magmaDoubleComplex),
+                   t_ref(0,0), ldt, dt_ref(0,i), lddt );
+
+    /* A panel (with zeros in lower tri of its diag) is ready to be used
+    in input of zlarfb_gpu: we send the panel to the gpu */
+    cublasSetMatrix( ib, cols, sizeof(magmaDoubleComplex),
+                   v_ref(0,i), ldv, da_ref(i,i), ldda );
+
+    if (i + ib < m) {
+
+      if (i+2*ib < m){
+          rows = ib;
+      }
+      else{
+          rows = m-i-ib;
+      }
+      /* Apply H' to A(i+ib:i+2*ib, i:n) from the right */
+      magma_zlarfb_gpu( MagmaRight, MagmaNoTrans, MagmaForward, MagmaRowwise,
+                        rows, cols, ib, da_ref(i,i), ldda, dt_ref(0,i),
+                        lddt, da_ref(i+ib,i), ldda, dwork, lddwork);
+      old_i = i;
+      old_ib = ib;
+      if (i+nb >= k){
+          /* Apply H' to A(i+2*ib:m, i:n) from the right */
+          rows = m-old_i-2*old_ib;
+          if (rows > 0){
+              magma_zlarfb_gpu( MagmaRight, MagmaNoTrans, MagmaForward, MagmaRowwise,
+                                rows, cols, old_ib,
+                                da_ref(old_i, old_i), ldda, dt_ref(0,old_i), lddt,
+                                da_ref(old_i+2*old_ib, old_i), ldda,
+                                dwork, lddwork);
+          }
+          /* copy the upper diag tile into d_A */
+          CUDA_zgemerge(MagmaRight, MagmaUnit, old_ib, old_ib,
+                        dd, ldd, da_ref(old_i, old_i), ldda, stream);
+      }
+    }
+
+    }
+
+#undef da_ref
+#undef v_ref
+#undef dt_ref
+#undef t_ref
+
+    return MORSE_SUCCESS;
+}
+#endif

cudablas/compute/cuda_zgemerge.c

+/**
+ *
+ * @copyright (c) 2009-2014 The University of Tennessee and The University
+ *                          of Tennessee Research Foundation.
+ *                          All rights reserved.
+ * @copyright (c) 2012-2015 Inria. All rights reserved.
+ * @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
+ *
+ **/
+
+/**
+ *
+ * @file cuda_zmerge.c
+ *
+ *  MORSE cudablas kernel
+ *  MORSE is a software package provided by Univ. of Tennessee,
+ *  Univ. of California Berkeley and Univ. of Colorado Denver,
+ *  and INRIA Bordeaux Sud-Ouest
+ *
+ * @author Florent Pruvost
+ * @date 2015-09-16
+ * @precisions normal z -> c d s
+ *
+ **/
+#include "cudablas/include/cudablas.h"
+
+#if defined(CHAMELEON_USE_MAGMA)
+#if defined(CHAMELEON_USE_CUBLAS_V2)
+int CUDA_zgemerge(
+        magma_side_t side, magma_diag_t diag,
+        magma_int_t M, magma_int_t N,
+        magmaDoubleComplex *A, magma_int_t LDA,
+        magmaDoubleComplex *B, magma_int_t LDB,
+        CUstream stream)
+{
+    int i, j;
+    magmaDoubleComplex *cola, *colb;
+    cublasHandle_t handle;
+    cublasStatus_t stat;
+
+    stat = cublasCreate(&handle);
+    if (stat != CUBLAS_STATUS_SUCCESS) {
+        printf ("CUBLAS initialization failed\n");
+        assert( stat == CUBLAS_STATUS_SUCCESS );
+    }
+
+    stat = cublasSetStream(handle, stream);
+    if (stat != CUBLAS_STATUS_SUCCESS) {
+        printf ("cublasSetStream failed\n");
+        assert( stat == CUBLAS_STATUS_SUCCESS );
+    }
+
+    if (M < 0) {
+        return -1;
+    }
+    if (N < 0) {
+        return -2;
+    }
+    if ( (LDA < max(1,M)) && (M > 0) ) {
+        return -5;
+    }
+    if ( (LDB < max(1,M)) && (M > 0) ) {
+        return -7;
+    }
+
+    if (side == MagmaLeft){
+        for(i=0; i<N; i++){
+            cola = A + i*LDA;
+            colb = B + i*LDB;
+//            cublasZcopy(handle, i+1, cola, 1, colb, 1);
+            cudaMemcpyAsync(colb , cola,
+                            (i+1)*sizeof(cuDoubleComplex),
+                            cudaMemcpyDeviceToDevice, stream);
+        }
+    }else{
+        for(i=0; i<N; i++){
+            cola = A + i*LDA;
+            colb = B + i*LDB;
+//            cublasZcopy(handle, M-i, cola + i, 1, colb + i, 1);
+            cudaMemcpyAsync(colb+i , cola+i,
+                            (M-i)*sizeof(cuDoubleComplex),
+                            cudaMemcpyDeviceToDevice, stream);
+        }
+    }
+
+    cublasDestroy(handle);
+
+    return MORSE_SUCCESS;
+}
+#else /* CHAMELEON_USE_CUBLAS_V2 */
+int CUDA_zgemerge(
+        magma_side_t side, magma_diag_t diag,
+        magma_int_t M, magma_int_t N,
+        magmaDoubleComplex *A, magma_int_t LDA,
+        magmaDoubleComplex *B, magma_int_t LDB,
+        CUstream stream)
+{
+    int i, j;
+    magmaDoubleComplex *cola, *colb;
+
+    if (M < 0) {
+        return -1;
+    }
+    if (N < 0) {
+        return -2;
+    }
+    if ( (LDA < max(1,M)) && (M > 0) ) {
+        return -5;
+    }
+    if ( (LDB < max(1,M)) && (M > 0) ) {
+        return -7;
+    }
+
+    if (side == MagmaLeft){
+        for(i=0; i<N; i++){
+            cola = A + i*LDA;
+            colb = B + i*LDB;
+//            cublasZcopy(i+1, cola, 1, colb, 1);
+            cudaMemcpyAsync(colb , cola,
+                            (i+1)*sizeof(cuDoubleComplex),
+                            cudaMemcpyDeviceToDevice, stream);
+        }
+    }else{
+        for(i=0; i<N; i++){
+            cola = A + i*LDA;
+            colb = B + i*LDB;
+//            cublasZcopy(M-i, cola + i, 1, colb + i, 1);
+            cudaMemcpyAsync(colb+i , cola+i,
+                            (M-i)*sizeof(cuDoubleComplex),
+                            cudaMemcpyDeviceToDevice, stream);
+        }
+    }
+
+    return MORSE_SUCCESS;
+}
+#endif /* CHAMELEON_USE_CUBLAS_V2 */
+#endif

cudablas/compute/cuda_zgeqrt.c

+/**
+ *
+ * @copyright (c) 2009-2014 The University of Tennessee and The University
+ *                          of Tennessee Research Foundation.
+ *                          All rights reserved.
+ * @copyright (c) 2012-2015 Inria. All rights reserved.
+ * @copyright (c) 2012-2014 Bordeaux INP, CNRS (LaBRI UMR 5800), Inria, Univ. Bordeaux. All rights reserved.
+ *
+ **/
+
+/**
+ *
+ * @file cuda_zgeqrt.c
+ *
+ *  MORSE cudablas kernel
+ *  MORSE is a software package provided by Univ. of Tennessee,
+ *  Univ. of California Berkeley and Univ. of Colorado Denver,
+ *  and INRIA Bordeaux Sud-Ouest
+ *
+ * @author Florent Pruvost
+ * @date 2015-09-16
+ * @precisions normal z -> c d s
+ *
+ **/
+#include "cudablas/include/cudablas.h"
+
+#if defined(CHAMELEON_USE_MAGMA)
+int CUDA_zgeqrt(
+        magma_int_t m, magma_int_t n, magma_int_t nb,
+        magmaDoubleComplex *da, magma_int_t ldda,
+        magmaDoubleComplex *v,  magma_int_t ldv,
+        magmaDoubleComplex *dt, magma_int_t lddt,
+        magmaDoubleComplex *t,  magma_int_t ldt,
+        magmaDoubleComplex *dd,
+        magmaDoubleComplex *d,  magma_int_t ldd,
+        magmaDoubleComplex *tau,
+        magmaDoubleComplex *hwork,
+        magmaDoubleComplex *dwork,
+        CUstream stream)
+{
+#define da_ref(a_1,a_2) ( da+(a_2)*(ldda) + (a_1))
+#define v_ref(a_1,a_2)  ( v+(a_2)*(ldv) + (a_1))
+#define dt_ref(a_1,a_2) ( dt+(a_2)*(lddt) + (a_1))
+#define t_ref(a_1,a_2)  ( t+(a_2)*(ldt) + (a_1))
+
+    int i, k, ib, lddwork, old_i, old_ib, rows, cols;
+    double _Complex one=1.;
+
+//    int lwkopt = n * nb;
+//    hwork[0] = *((magmaDoubleComplex*) &lwkopt);
+
+    if (m < 0) {
+        return -1;
+    } else if (n < 0) {
+        return -2;
+    } else if (ldda < max(1,m)) {
+        return -4;
+    }
+
+    k = min(m,n);
+    if (k == 0) {
+        hwork[0] = *((magmaDoubleComplex*) &one);
+        return MAGMA_SUCCESS;
+    }
+
+    lddwork= k;
+
+    /* lower parts of little T must be zero: memset to 0 for simplicity */
+    memset(t_ref(0,0), 0, nb*nb*sizeof(magmaDoubleComplex));
+    cudaMemsetAsync(dt_ref(0,0), 0, nb*n*sizeof(magmaDoubleComplex), stream);
+
+    /* copy first panel of A on the host */
+//  cublasGetMatrix(m, min(nb,n), sizeof(magmaDoubleComplex),
+//                    da_ref(0, 0), ldda,
+//                    v, ldv);
+    cudaMemcpy( v, da_ref(0,0),
+                m*min(nb,n)*sizeof(magmaDoubleComplex),
+                cudaMemcpyDeviceToHost);
+
+    /* Use blocked code initially */
+    for (i = 0; i < k; i += nb) {
+
+        ib = min(k-i, nb);
+        if (i+nb>=n) ib = min(n-i, nb);
+        rows = m-i;
+
+        if (i>0){
+
+            /* copy panel of A from device to host */
+//          cublasGetMatrix(m, ib, sizeof(magmaDoubleComplex),
+//                            da_ref(0, i), ldda,
+//                            v, ldv);
+            /* copy panel of A from device to host */
+            cudaMemcpy( v, da_ref(0,i),
+                        m*ib*sizeof(magmaDoubleComplex),
+                        cudaMemcpyDeviceToHost);
+
+            /* Apply H' to A(i:m,i+2*ib:n) from the left */
+            cols = n-old_i-2*old_ib;
+            if (cols > 0){
+                magma_zlarfb_gpu( MagmaLeft, MagmaConjTrans, MagmaForward, MagmaColumnwise,
+                                  m-old_i, cols, old_ib,
+                                  da_ref(old_i, old_i), ldda, dt_ref(0,old_i), lddt,
+                                  da_ref(old_i, old_i+2*old_ib), ldda,
+                                  dwork, cols);
+            }
+
+            /* copy the upper diag tile into d_A */
+            CUDA_zgemerge(MagmaLeft, MagmaUnit, old_ib, old_ib,
+                          dd, ldd, da_ref(old_i, old_i), ldda, stream);
+
+        }
+
+        /* Form the triangular factor of the block reflector on the host
+         H = H(i) H(i+1) . . . H(i+ib-1) */
+        CORE_zgeqrt(rows, ib, ib,
+                    (double _Complex*) v_ref(i,0), ldv,
+                    (double _Complex*) t_ref(0,0), ldt,
+                    (double _Complex*) tau+i,
+                    (double _Complex*) hwork);
+
+        if ( i + ib < n ){
+            /* put 0s in the upper triangular part of a panel (and 1s on the
+             diagonal); copy the upper triangular in d */
+            CORE_zgesplit(MorseLeft, MorseUnit, min(rows,ib), ib,
+                          (double _Complex*) v_ref(i,0), ldv,
+                          (double _Complex*) d, ldd);
+
+            /* copy from host to device a tile diag */
+            cublasSetMatrix( min(rows,ib), ib, sizeof(magmaDoubleComplex),
+                             d, ldd, dd, ldd );
+        }
+
+        /* Send the triangular factor T to the GPU */
+        cublasSetMatrix( ib, ib, sizeof(magmaDoubleComplex),
+                         t_ref(0,0), ldt, dt_ref(0,i), lddt );
+
+        /* A panel (with zeros in upper tri of its diag) is ready to be used
+         in input of zlarfb_gpu: we send the panel to the gpu */
+        cublasSetMatrix( rows, ib, sizeof(magmaDoubleComplex),
+                         v_ref(i,0), ldv, da_ref(i,i), ldda );
+
+        if (i + ib < n) {
+
+            if (i+2*ib < n){
+                cols = ib;
+            }
+            else{
+                cols = n-i-ib;
+            }
+            /* Apply H' to A(i:m,i+ib:i+2*ib) from the left */
+            magma_zlarfb_gpu( MagmaLeft, MagmaConjTrans, MagmaForward, MagmaColumnwise,
+                              rows, cols, ib, da_ref(i,i), ldda, dt_ref(0,i),
+                              lddt, da_ref(i,i+ib), ldda, dwork, cols);
+            old_i = i;
+            old_ib = ib;
+            if (i+nb>=k){
+                /* Apply H' to A(i:m,i+2*ib:n) from the left */
+                cols = n-old_i-2*old_ib;
+                if (cols > 0){
+                    magma_zlarfb_gpu( MagmaLeft, MagmaConjTrans, MagmaForward, MagmaColumnwise,
+                                      rows, cols, old_ib,
+                                      da_ref(old_i, old_i), ldda, dt_ref(0,old_i), lddt,
+                                      da_ref(old_i, old_i+2*old_ib), ldda,
+                                      dwork, cols);
+                }
+                /* copy the upper diag tile into d_A */
+                CUDA_zgemerge(MagmaLeft, MagmaUnit, old_ib, old_ib,
+                              dd, ldd, da_ref(old_i, old_i), ldda, stream);
+            }
+        }
+
+    }
+
+#undef da_ref
+#undef v_ref
+#undef dt_ref
+#undef t_ref
+
+    return MORSE_SUCCESS;
+}
+
+#if defined(CHAMELEON_USE_CUBLAS_V2)
+int CUDA_zgemerge(
+        magma_side_t side, magma_diag_t diag,
+        magma_int_t M, magma_int_t N,
+        magmaDoubleComplex *A, magma_int_t LDA,
+        magmaDoubleComplex *B, magma_int_t LDB,
+        CUstream stream)
+{
+    int i, j;
+    magmaDoubleComplex *cola, *colb;