Tpetra parallel linear algebra Version of the Day
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TpetraExt_MatrixMatrix_SYCL.hpp
1// @HEADER
2// *****************************************************************************
3// Tpetra: Templated Linear Algebra Services Package
4//
5// Copyright 2008 NTESS and the Tpetra contributors.
6// SPDX-License-Identifier: BSD-3-Clause
7// *****************************************************************************
8// @HEADER
9
10#ifndef TPETRA_MATRIXMATRIX_SYCL_DEF_HPP
11#define TPETRA_MATRIXMATRIX_SYCL_DEF_HPP
12
13#include "Tpetra_Details_IntRowPtrHelper.hpp"
14
15#ifdef HAVE_TPETRA_INST_SYCL
16namespace Tpetra {
17namespace MMdetails {
18
19/*********************************************************************************************************/
20// MMM KernelWrappers for Partial Specialization to SYCL
21template <class Scalar,
22 class LocalOrdinal,
23 class GlobalOrdinal,
24 class LocalOrdinalViewType>
25struct KernelWrappers<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode, LocalOrdinalViewType> {
26 static inline void mult_A_B_newmatrix_kernel_wrapper(CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
27 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
28 const LocalOrdinalViewType& Acol2Brow,
29 const LocalOrdinalViewType& Acol2Irow,
30 const LocalOrdinalViewType& Bcol2Ccol,
31 const LocalOrdinalViewType& Icol2Ccol,
32 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
33 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
34 const std::string& label = std::string(),
35 const Teuchos::RCP<Teuchos::ParameterList>& params = Teuchos::null);
36
37 static inline void mult_A_B_reuse_kernel_wrapper(CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
38 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
39 const LocalOrdinalViewType& Acol2Brow,
40 const LocalOrdinalViewType& Acol2Irow,
41 const LocalOrdinalViewType& Bcol2Ccol,
42 const LocalOrdinalViewType& Icol2Ccol,
43 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
44 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
45 const std::string& label = std::string(),
46 const Teuchos::RCP<Teuchos::ParameterList>& params = Teuchos::null);
47};
48
49// Jacobi KernelWrappers for Partial Specialization to SYCL
50template <class Scalar,
51 class LocalOrdinal,
52 class GlobalOrdinal, class LocalOrdinalViewType>
53struct KernelWrappers2<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode, LocalOrdinalViewType> {
54 static inline void jacobi_A_B_newmatrix_kernel_wrapper(Scalar omega,
55 const Vector<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Dinv,
56 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
57 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
58 const LocalOrdinalViewType& Acol2Brow,
59 const LocalOrdinalViewType& Acol2Irow,
60 const LocalOrdinalViewType& Bcol2Ccol,
61 const LocalOrdinalViewType& Icol2Ccol,
62 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
63 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
64 const std::string& label = std::string(),
65 const Teuchos::RCP<Teuchos::ParameterList>& params = Teuchos::null);
66
67 static inline void jacobi_A_B_reuse_kernel_wrapper(Scalar omega,
68 const Vector<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Dinv,
69 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
70 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
71 const LocalOrdinalViewType& Acol2Brow,
72 const LocalOrdinalViewType& Acol2Irow,
73 const LocalOrdinalViewType& Bcol2Ccol,
74 const LocalOrdinalViewType& Icol2Ccol,
75 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
76 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
77 const std::string& label = std::string(),
78 const Teuchos::RCP<Teuchos::ParameterList>& params = Teuchos::null);
79
80 static inline void jacobi_A_B_newmatrix_KokkosKernels(Scalar omega,
81 const Vector<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Dinv,
82 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
83 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
84 const LocalOrdinalViewType& Acol2Brow,
85 const LocalOrdinalViewType& Acol2Irow,
86 const LocalOrdinalViewType& Bcol2Ccol,
87 const LocalOrdinalViewType& Icol2Ccol,
88 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
89 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
90 const std::string& label = std::string(),
91 const Teuchos::RCP<Teuchos::ParameterList>& params = Teuchos::null);
92};
93
94/*********************************************************************************************************/
95// AB NewMatrix Kernel wrappers (KokkosKernels/SYCL Version)
96template <class Scalar,
97 class LocalOrdinal,
98 class GlobalOrdinal,
99 class LocalOrdinalViewType>
100void KernelWrappers<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode, LocalOrdinalViewType>::mult_A_B_newmatrix_kernel_wrapper(CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
101 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
102 const LocalOrdinalViewType& Acol2Brow,
103 const LocalOrdinalViewType& Acol2Irow,
104 const LocalOrdinalViewType& Bcol2Ccol,
105 const LocalOrdinalViewType& Icol2Ccol,
106 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
107 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
108 const std::string& label,
109 const Teuchos::RCP<Teuchos::ParameterList>& params) {
110#ifdef HAVE_TPETRA_MMM_TIMINGS
111 std::string prefix_mmm = std::string("TpetraExt ") + label + std::string(": ");
112 using Teuchos::TimeMonitor;
113 Teuchos::RCP<TimeMonitor> MM = rcp(new TimeMonitor(*(TimeMonitor::getNewTimer(prefix_mmm + std::string("MMM Newmatrix SYCLWrapper")))));
114#endif
115 // Node-specific code
116 typedef Tpetra::KokkosCompat::KokkosSYCLWrapperNode Node;
117 std::string nodename("SYCL");
118
119 // Lots and lots of typedefs
120 using Teuchos::RCP;
121 typedef typename Tpetra::CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>::local_matrix_device_type KCRS;
122 typedef typename KCRS::device_type device_t;
123 typedef typename KCRS::StaticCrsGraphType graph_t;
124 typedef typename graph_t::row_map_type::non_const_type lno_view_t;
125 using int_view_t = Kokkos::View<int*, typename lno_view_t::array_layout, typename lno_view_t::memory_space, typename lno_view_t::memory_traits>;
126 typedef typename graph_t::row_map_type::const_type c_lno_view_t;
127 typedef typename graph_t::entries_type::non_const_type lno_nnz_view_t;
128 typedef typename KCRS::values_type::non_const_type scalar_view_t;
129 // typedef typename graph_t::row_map_type::const_type lno_view_t_const;
130
131 // Options
132 int team_work_size = 16; // Defaults to 16 as per Deveci 12/7/16 - csiefer
133 std::string myalg("SPGEMM_KK_MEMORY");
134 if (!params.is_null()) {
135 if (params->isParameter("sycl: algorithm"))
136 myalg = params->get("sycl: algorithm", myalg);
137 if (params->isParameter("sycl: team work size"))
138 team_work_size = params->get("sycl: team work size", team_work_size);
139 }
140
141 // KokkosKernelsHandle
142 typedef KokkosKernels::Experimental::KokkosKernelsHandle<
143 typename lno_view_t::const_value_type, typename lno_nnz_view_t::const_value_type, typename scalar_view_t::const_value_type,
144 typename device_t::execution_space, typename device_t::memory_space, typename device_t::memory_space>
145 KernelHandle;
146 using IntKernelHandle = KokkosKernels::Experimental::KokkosKernelsHandle<
147 typename int_view_t::const_value_type, typename lno_nnz_view_t::const_value_type, typename scalar_view_t::const_value_type,
148 typename device_t::execution_space, typename device_t::memory_space, typename device_t::memory_space>;
149
150 // Grab the Kokkos::SparseCrsMatrices
151 const KCRS Amat = Aview.origMatrix->getLocalMatrixDevice();
152 const KCRS Bmat = Bview.origMatrix->getLocalMatrixDevice();
153
154 c_lno_view_t Arowptr = Amat.graph.row_map,
155 Browptr = Bmat.graph.row_map;
156 const lno_nnz_view_t Acolind = Amat.graph.entries,
157 Bcolind = Bmat.graph.entries;
158 const scalar_view_t Avals = Amat.values,
159 Bvals = Bmat.values;
160
161 // Get the algorithm mode
162 std::string alg = nodename + std::string(" algorithm");
163 // printf("DEBUG: Using kernel: %s\n",myalg.c_str());
164 if (!params.is_null() && params->isParameter(alg)) myalg = params->get(alg, myalg);
165 KokkosSparse::SPGEMMAlgorithm alg_enum = KokkosSparse::StringToSPGEMMAlgorithm(myalg);
166
167 // Merge the B and Bimport matrices
168 const KCRS Bmerged = Tpetra::MMdetails::merge_matrices(Aview, Bview, Acol2Brow, Acol2Irow, Bcol2Ccol, Icol2Ccol, C.getColMap()->getLocalNumElements());
169
170#ifdef HAVE_TPETRA_MMM_TIMINGS
171 MM = Teuchos::null;
172 MM = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("MMM Newmatrix SYCLCore"))));
173#endif
174
175 // Do the multiply on whatever we've got
176 typename KernelHandle::nnz_lno_t AnumRows = Amat.numRows();
177 typename KernelHandle::nnz_lno_t BnumRows = Bmerged.numRows();
178 typename KernelHandle::nnz_lno_t BnumCols = Bmerged.numCols();
179
180 lno_view_t row_mapC(Kokkos::ViewAllocateWithoutInitializing("non_const_lno_row"), AnumRows + 1);
181 lno_nnz_view_t entriesC;
182 scalar_view_t valuesC;
183
184 // static_assert(std::is_void_v<typename KCRS::row_map_type::non_const_value_type>, "");
185 // static_assert(std::is_void_v<typename decltype(Bmerged)::row_map_type::non_const_value_type>, "");
186 Tpetra::Details::IntRowPtrHelper<decltype(Bmerged)> irph(Bmerged.nnz(), Bmerged.graph.row_map);
187 const bool useIntRowptrs =
188 irph.shouldUseIntRowptrs() &&
189 Aview.origMatrix->getApplyHelper()->shouldUseIntRowptrs();
190
191 if (useIntRowptrs) {
192 IntKernelHandle kh;
193 kh.create_spgemm_handle(alg_enum);
194 kh.set_team_work_size(team_work_size);
195
196 int_view_t int_row_mapC(Kokkos::ViewAllocateWithoutInitializing("non_const_int_row"), AnumRows + 1);
197
198 auto Aint = Aview.origMatrix->getApplyHelper()->getIntRowptrMatrix(Amat);
199 auto Bint = irph.getIntRowptrMatrix(Bmerged);
200 KokkosSparse::spgemm_symbolic(&kh, AnumRows, BnumRows, BnumCols, Aint.graph.row_map, Aint.graph.entries, false, Bint.graph.row_map, Bint.graph.entries, false, int_row_mapC);
201
202 size_t c_nnz_size = kh.get_spgemm_handle()->get_c_nnz();
203 if (c_nnz_size) {
204 entriesC = lno_nnz_view_t(Kokkos::ViewAllocateWithoutInitializing("entriesC"), c_nnz_size);
205 valuesC = scalar_view_t(Kokkos::ViewAllocateWithoutInitializing("valuesC"), c_nnz_size);
206 }
207 KokkosSparse::spgemm_numeric(&kh, AnumRows, BnumRows, BnumCols, Aint.graph.row_map, Aint.graph.entries, Aint.values, false, Bint.graph.row_map, Bint.graph.entries, Bint.values, false, int_row_mapC, entriesC, valuesC);
208 // transfer the integer rowptrs back to the correct rowptr type
209 Kokkos::parallel_for(
210 int_row_mapC.size(), KOKKOS_LAMBDA(int i) { row_mapC(i) = int_row_mapC(i); });
211 kh.destroy_spgemm_handle();
212
213 } else {
214 KernelHandle kh;
215 kh.create_spgemm_handle(alg_enum);
216 kh.set_team_work_size(team_work_size);
217
218 KokkosSparse::spgemm_symbolic(&kh, AnumRows, BnumRows, BnumCols, Amat.graph.row_map, Amat.graph.entries, false, Bmerged.graph.row_map, Bmerged.graph.entries, false, row_mapC);
219
220 size_t c_nnz_size = kh.get_spgemm_handle()->get_c_nnz();
221 if (c_nnz_size) {
222 entriesC = lno_nnz_view_t(Kokkos::ViewAllocateWithoutInitializing("entriesC"), c_nnz_size);
223 valuesC = scalar_view_t(Kokkos::ViewAllocateWithoutInitializing("valuesC"), c_nnz_size);
224 }
225
226 KokkosSparse::spgemm_numeric(&kh, AnumRows, BnumRows, BnumCols, Amat.graph.row_map, Amat.graph.entries, Amat.values, false, Bmerged.graph.row_map, Bmerged.graph.entries, Bmerged.values, false, row_mapC, entriesC, valuesC);
227 kh.destroy_spgemm_handle();
228 }
229
230#ifdef HAVE_TPETRA_MMM_TIMINGS
231 MM = Teuchos::null;
232 MM = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("MMM Newmatrix SYCLSort"))));
233#endif
234
235 // Sort & set values
236 if (params.is_null() || params->get("sort entries", true))
237 Import_Util::sortCrsEntries(row_mapC, entriesC, valuesC);
238 C.setAllValues(row_mapC, entriesC, valuesC);
239
240#ifdef HAVE_TPETRA_MMM_TIMINGS
241 MM = Teuchos::null;
242 MM = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("MMM Newmatrix SYCLESFC"))));
243#endif
244
245 // Final Fillcomplete
246 RCP<Teuchos::ParameterList> labelList = rcp(new Teuchos::ParameterList);
247 labelList->set("Timer Label", label);
248 if (!params.is_null()) labelList->set("compute global constants", params->get("compute global constants", true));
249 RCP<const Export<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > dummyExport;
250 C.expertStaticFillComplete(Bview.origMatrix->getDomainMap(), Aview.origMatrix->getRangeMap(), Cimport, dummyExport, labelList);
251}
252
253/*********************************************************************************************************/
254template <class Scalar,
255 class LocalOrdinal,
256 class GlobalOrdinal,
257 class LocalOrdinalViewType>
258void KernelWrappers<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode, LocalOrdinalViewType>::mult_A_B_reuse_kernel_wrapper(
259 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
260 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
261 const LocalOrdinalViewType& targetMapToOrigRow_dev,
262 const LocalOrdinalViewType& targetMapToImportRow_dev,
263 const LocalOrdinalViewType& Bcol2Ccol_dev,
264 const LocalOrdinalViewType& Icol2Ccol_dev,
265 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
266 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
267 const std::string& label,
268 const Teuchos::RCP<Teuchos::ParameterList>& params) {
269 // FIXME: Right now, this is a cut-and-paste of the serial kernel
270 typedef Tpetra::KokkosCompat::KokkosSYCLWrapperNode Node;
271
272#ifdef HAVE_TPETRA_MMM_TIMINGS
273 std::string prefix_mmm = std::string("TpetraExt ") + label + std::string(": ");
274 using Teuchos::TimeMonitor;
275 Teuchos::RCP<Teuchos::TimeMonitor> MM = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("MMM Reuse SerialCore"))));
276 Teuchos::RCP<Teuchos::TimeMonitor> MM2;
277#endif
278 using Teuchos::RCP;
279 using Teuchos::rcp;
280
281 // Lots and lots of typedefs
282 typedef typename Tpetra::CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>::local_matrix_host_type KCRS;
283 typedef typename KCRS::StaticCrsGraphType graph_t;
284 typedef typename graph_t::row_map_type::const_type c_lno_view_t;
285 typedef typename graph_t::entries_type::non_const_type lno_nnz_view_t;
286 typedef typename KCRS::values_type::non_const_type scalar_view_t;
287
288 typedef Scalar SC;
289 typedef LocalOrdinal LO;
290 typedef GlobalOrdinal GO;
291 typedef Node NO;
292 typedef Map<LO, GO, NO> map_type;
293 const size_t ST_INVALID = Teuchos::OrdinalTraits<LO>::invalid();
294 const LO LO_INVALID = Teuchos::OrdinalTraits<LO>::invalid();
295 const SC SC_ZERO = Teuchos::ScalarTraits<Scalar>::zero();
296
297 // Since this is being run on SYCL, we need to fence because the below code will use UVM
298 // typename graph_t::execution_space().fence();
299
300 // KDDKDD UVM Without UVM, need to copy targetMap arrays to host.
301 // KDDKDD UVM Ideally, this function would run on device and use
302 // KDDKDD UVM KokkosKernels instead of this host implementation.
303 auto targetMapToOrigRow =
304 Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace(),
305 targetMapToOrigRow_dev);
306 auto targetMapToImportRow =
307 Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace(),
308 targetMapToImportRow_dev);
309 auto Bcol2Ccol =
310 Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace(),
311 Bcol2Ccol_dev);
312 auto Icol2Ccol =
313 Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace(),
314 Icol2Ccol_dev);
315
316 // Sizes
317 RCP<const map_type> Ccolmap = C.getColMap();
318 size_t m = Aview.origMatrix->getLocalNumRows();
319 size_t n = Ccolmap->getLocalNumElements();
320
321 // Grab the Kokkos::SparseCrsMatrices & inner stuff
322 const KCRS Amat = Aview.origMatrix->getLocalMatrixHost();
323 const KCRS Bmat = Bview.origMatrix->getLocalMatrixHost();
324 const KCRS Cmat = C.getLocalMatrixHost();
325
326 c_lno_view_t Arowptr = Amat.graph.row_map,
327 Browptr = Bmat.graph.row_map,
328 Crowptr = Cmat.graph.row_map;
329 const lno_nnz_view_t Acolind = Amat.graph.entries,
330 Bcolind = Bmat.graph.entries,
331 Ccolind = Cmat.graph.entries;
332 const scalar_view_t Avals = Amat.values, Bvals = Bmat.values;
333 scalar_view_t Cvals = Cmat.values;
334
335 c_lno_view_t Irowptr;
336 lno_nnz_view_t Icolind;
337 scalar_view_t Ivals;
338 if (!Bview.importMatrix.is_null()) {
339 auto lclB = Bview.importMatrix->getLocalMatrixHost();
340 Irowptr = lclB.graph.row_map;
341 Icolind = lclB.graph.entries;
342 Ivals = lclB.values;
343 }
344
345#ifdef HAVE_TPETRA_MMM_TIMINGS
346 MM2 = Teuchos::null;
347 MM2 = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("MMM Newmatrix SerialCore - Compare"))));
348#endif
349
350 // Classic csr assembly (low memory edition)
351 // mfh 27 Sep 2016: The c_status array is an implementation detail
352 // of the local sparse matrix-matrix multiply routine.
353
354 // The status array will contain the index into colind where this entry was last deposited.
355 // c_status[i] < CSR_ip - not in the row yet
356 // c_status[i] >= CSR_ip - this is the entry where you can find the data
357 // We start with this filled with INVALID's indicating that there are no entries yet.
358 // Sadly, this complicates the code due to the fact that size_t's are unsigned.
359 std::vector<size_t> c_status(n, ST_INVALID);
360
361 // For each row of A/C
362 size_t CSR_ip = 0, OLD_ip = 0;
363 for (size_t i = 0; i < m; i++) {
364 // First fill the c_status array w/ locations where we're allowed to
365 // generate nonzeros for this row
366 OLD_ip = Crowptr[i];
367 CSR_ip = Crowptr[i + 1];
368 for (size_t k = OLD_ip; k < CSR_ip; k++) {
369 c_status[Ccolind[k]] = k;
370
371 // Reset values in the row of C
372 Cvals[k] = SC_ZERO;
373 }
374
375 for (size_t k = Arowptr[i]; k < Arowptr[i + 1]; k++) {
376 LO Aik = Acolind[k];
377 const SC Aval = Avals[k];
378 if (Aval == SC_ZERO)
379 continue;
380
381 if (targetMapToOrigRow[Aik] != LO_INVALID) {
382 // Local matrix
383 size_t Bk = Teuchos::as<size_t>(targetMapToOrigRow[Aik]);
384
385 for (size_t j = Browptr[Bk]; j < Browptr[Bk + 1]; ++j) {
386 LO Bkj = Bcolind[j];
387 LO Cij = Bcol2Ccol[Bkj];
388
389 TEUCHOS_TEST_FOR_EXCEPTION(c_status[Cij] < OLD_ip || c_status[Cij] >= CSR_ip,
390 std::runtime_error, "Trying to insert a new entry (" << i << "," << Cij << ") into a static graph "
391 << "(c_status = " << c_status[Cij] << " of [" << OLD_ip << "," << CSR_ip << "))");
392
393 Cvals[c_status[Cij]] += Aval * Bvals[j];
394 }
395
396 } else {
397 // Remote matrix
398 size_t Ik = Teuchos::as<size_t>(targetMapToImportRow[Aik]);
399 for (size_t j = Irowptr[Ik]; j < Irowptr[Ik + 1]; ++j) {
400 LO Ikj = Icolind[j];
401 LO Cij = Icol2Ccol[Ikj];
402
403 TEUCHOS_TEST_FOR_EXCEPTION(c_status[Cij] < OLD_ip || c_status[Cij] >= CSR_ip,
404 std::runtime_error, "Trying to insert a new entry (" << i << "," << Cij << ") into a static graph "
405 << "(c_status = " << c_status[Cij] << " of [" << OLD_ip << "," << CSR_ip << "))");
406
407 Cvals[c_status[Cij]] += Aval * Ivals[j];
408 }
409 }
410 }
411 }
412
413 C.fillComplete(C.getDomainMap(), C.getRangeMap());
414}
415
416/*********************************************************************************************************/
417template <class Scalar,
418 class LocalOrdinal,
419 class GlobalOrdinal,
420 class LocalOrdinalViewType>
421void KernelWrappers2<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode, LocalOrdinalViewType>::jacobi_A_B_newmatrix_kernel_wrapper(Scalar omega,
422 const Vector<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Dinv,
423 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
424 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
425 const LocalOrdinalViewType& Acol2Brow,
426 const LocalOrdinalViewType& Acol2Irow,
427 const LocalOrdinalViewType& Bcol2Ccol,
428 const LocalOrdinalViewType& Icol2Ccol,
429 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
430 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
431 const std::string& label,
432 const Teuchos::RCP<Teuchos::ParameterList>& params) {
433#ifdef HAVE_TPETRA_MMM_TIMINGS
434 std::string prefix_mmm = std::string("TpetraExt ") + label + std::string(": ");
435 using Teuchos::TimeMonitor;
436 Teuchos::RCP<TimeMonitor> MM;
437#endif
438
439 // Node-specific code
440 using Teuchos::RCP;
441
442 // Options
443 // int team_work_size = 16; // Defaults to 16 as per Deveci 12/7/16 - csiefer // unreferenced
444 std::string myalg("KK");
445 if (!params.is_null()) {
446 if (params->isParameter("sycl: jacobi algorithm"))
447 myalg = params->get("sycl: jacobi algorithm", myalg);
448 }
449
450 if (myalg == "MSAK") {
451 ::Tpetra::MatrixMatrix::ExtraKernels::jacobi_A_B_newmatrix_MultiplyScaleAddKernel(omega, Dinv, Aview, Bview, Acol2Brow, Acol2Irow, Bcol2Ccol, Icol2Ccol, C, Cimport, label, params);
452 } else if (myalg == "KK") {
453 jacobi_A_B_newmatrix_KokkosKernels(omega, Dinv, Aview, Bview, Acol2Brow, Acol2Irow, Bcol2Ccol, Icol2Ccol, C, Cimport, label, params);
454 } else {
455 throw std::runtime_error("Tpetra::MatrixMatrix::Jacobi newmatrix unknown kernel");
456 }
457
458#ifdef HAVE_TPETRA_MMM_TIMINGS
459 MM = Teuchos::null;
460 MM = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("Jacobi Newmatrix SYCLESFC"))));
461#endif
462
463 // Final Fillcomplete
464 RCP<Teuchos::ParameterList> labelList = rcp(new Teuchos::ParameterList);
465 labelList->set("Timer Label", label);
466 if (!params.is_null()) labelList->set("compute global constants", params->get("compute global constants", true));
467
468 // NOTE: MSAK already fillCompletes, so we have to check here
469 if (!C.isFillComplete()) {
470 RCP<const Export<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > dummyExport;
471 C.expertStaticFillComplete(Bview.origMatrix->getDomainMap(), Aview.origMatrix->getRangeMap(), Cimport, dummyExport, labelList);
472 }
473}
474
475/*********************************************************************************************************/
476template <class Scalar,
477 class LocalOrdinal,
478 class GlobalOrdinal,
479 class LocalOrdinalViewType>
480void KernelWrappers2<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode, LocalOrdinalViewType>::jacobi_A_B_reuse_kernel_wrapper(Scalar omega,
481 const Vector<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Dinv,
482 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
483 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
484 const LocalOrdinalViewType& targetMapToOrigRow_dev,
485 const LocalOrdinalViewType& targetMapToImportRow_dev,
486 const LocalOrdinalViewType& Bcol2Ccol_dev,
487 const LocalOrdinalViewType& Icol2Ccol_dev,
488 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
489 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
490 const std::string& label,
491 const Teuchos::RCP<Teuchos::ParameterList>& params) {
492 // FIXME: Right now, this is a cut-and-paste of the serial kernel
493 typedef Tpetra::KokkosCompat::KokkosSYCLWrapperNode Node;
494
495#ifdef HAVE_TPETRA_MMM_TIMINGS
496 std::string prefix_mmm = std::string("TpetraExt ") + label + std::string(": ");
497 using Teuchos::TimeMonitor;
498 Teuchos::RCP<Teuchos::TimeMonitor> MM = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("Jacobi Reuse SYCLCore"))));
499 Teuchos::RCP<Teuchos::TimeMonitor> MM2;
500#endif
501 using Teuchos::RCP;
502 using Teuchos::rcp;
503
504 // Lots and lots of typedefs
505 typedef typename Tpetra::CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node>::local_matrix_host_type KCRS;
506 typedef typename KCRS::StaticCrsGraphType graph_t;
507 typedef typename graph_t::row_map_type::const_type c_lno_view_t;
508 typedef typename graph_t::entries_type::non_const_type lno_nnz_view_t;
509 typedef typename KCRS::values_type::non_const_type scalar_view_t;
510 typedef typename scalar_view_t::memory_space scalar_memory_space;
511
512 typedef Scalar SC;
513 typedef LocalOrdinal LO;
514 typedef GlobalOrdinal GO;
515 typedef Node NO;
516 typedef Map<LO, GO, NO> map_type;
517 const size_t ST_INVALID = Teuchos::OrdinalTraits<LO>::invalid();
518 const LO LO_INVALID = Teuchos::OrdinalTraits<LO>::invalid();
519 const SC SC_ZERO = Teuchos::ScalarTraits<Scalar>::zero();
520
521 // Since this is being run on SYCL, we need to fence because the below host code will use UVM
522 // KDDKDD typename graph_t::execution_space().fence();
523
524 // KDDKDD UVM Without UVM, need to copy targetMap arrays to host.
525 // KDDKDD UVM Ideally, this function would run on device and use
526 // KDDKDD UVM KokkosKernels instead of this host implementation.
527 auto targetMapToOrigRow =
528 Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace(),
529 targetMapToOrigRow_dev);
530 auto targetMapToImportRow =
531 Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace(),
532 targetMapToImportRow_dev);
533 auto Bcol2Ccol =
534 Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace(),
535 Bcol2Ccol_dev);
536 auto Icol2Ccol =
537 Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace(),
538 Icol2Ccol_dev);
539
540 // Sizes
541 RCP<const map_type> Ccolmap = C.getColMap();
542 size_t m = Aview.origMatrix->getLocalNumRows();
543 size_t n = Ccolmap->getLocalNumElements();
544
545 // Grab the Kokkos::SparseCrsMatrices & inner stuff
546 const KCRS Amat = Aview.origMatrix->getLocalMatrixHost();
547 const KCRS Bmat = Bview.origMatrix->getLocalMatrixHost();
548 const KCRS Cmat = C.getLocalMatrixHost();
549
550 c_lno_view_t Arowptr = Amat.graph.row_map, Browptr = Bmat.graph.row_map, Crowptr = Cmat.graph.row_map;
551 const lno_nnz_view_t Acolind = Amat.graph.entries, Bcolind = Bmat.graph.entries, Ccolind = Cmat.graph.entries;
552 const scalar_view_t Avals = Amat.values, Bvals = Bmat.values;
553 scalar_view_t Cvals = Cmat.values;
554
555 c_lno_view_t Irowptr;
556 lno_nnz_view_t Icolind;
557 scalar_view_t Ivals;
558 if (!Bview.importMatrix.is_null()) {
559 auto lclB = Bview.importMatrix->getLocalMatrixHost();
560 Irowptr = lclB.graph.row_map;
561 Icolind = lclB.graph.entries;
562 Ivals = lclB.values;
563 }
564
565 // Jacobi-specific inner stuff
566 auto Dvals =
567 Dinv.template getLocalView<scalar_memory_space>(Access::ReadOnly);
568
569#ifdef HAVE_TPETRA_MMM_TIMINGS
570 MM2 = Teuchos::null;
571 MM2 = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("Jacobi Reuse SYCLCore - Compare"))));
572#endif
573
574 // The status array will contain the index into colind where this entry was last deposited.
575 // c_status[i] < CSR_ip - not in the row yet
576 // c_status[i] >= CSR_ip - this is the entry where you can find the data
577 // We start with this filled with INVALID's indicating that there are no entries yet.
578 // Sadly, this complicates the code due to the fact that size_t's are unsigned.
579 std::vector<size_t> c_status(n, ST_INVALID);
580
581 // For each row of A/C
582 size_t CSR_ip = 0, OLD_ip = 0;
583 for (size_t i = 0; i < m; i++) {
584 // First fill the c_status array w/ locations where we're allowed to
585 // generate nonzeros for this row
586 OLD_ip = Crowptr[i];
587 CSR_ip = Crowptr[i + 1];
588 for (size_t k = OLD_ip; k < CSR_ip; k++) {
589 c_status[Ccolind[k]] = k;
590
591 // Reset values in the row of C
592 Cvals[k] = SC_ZERO;
593 }
594
595 SC minusOmegaDval = -omega * Dvals(i, 0);
596
597 // Entries of B
598 for (size_t j = Browptr[i]; j < Browptr[i + 1]; j++) {
599 Scalar Bval = Bvals[j];
600 if (Bval == SC_ZERO)
601 continue;
602 LO Bij = Bcolind[j];
603 LO Cij = Bcol2Ccol[Bij];
604
605 TEUCHOS_TEST_FOR_EXCEPTION(c_status[Cij] < OLD_ip || c_status[Cij] >= CSR_ip,
606 std::runtime_error, "Trying to insert a new entry into a static graph");
607
608 Cvals[c_status[Cij]] = Bvals[j];
609 }
610
611 // Entries of -omega * Dinv * A * B
612 for (size_t k = Arowptr[i]; k < Arowptr[i + 1]; k++) {
613 LO Aik = Acolind[k];
614 const SC Aval = Avals[k];
615 if (Aval == SC_ZERO)
616 continue;
617
618 if (targetMapToOrigRow[Aik] != LO_INVALID) {
619 // Local matrix
620 size_t Bk = Teuchos::as<size_t>(targetMapToOrigRow[Aik]);
621
622 for (size_t j = Browptr[Bk]; j < Browptr[Bk + 1]; ++j) {
623 LO Bkj = Bcolind[j];
624 LO Cij = Bcol2Ccol[Bkj];
625
626 TEUCHOS_TEST_FOR_EXCEPTION(c_status[Cij] < OLD_ip || c_status[Cij] >= CSR_ip,
627 std::runtime_error, "Trying to insert a new entry into a static graph");
628
629 Cvals[c_status[Cij]] += minusOmegaDval * Aval * Bvals[j];
630 }
631
632 } else {
633 // Remote matrix
634 size_t Ik = Teuchos::as<size_t>(targetMapToImportRow[Aik]);
635 for (size_t j = Irowptr[Ik]; j < Irowptr[Ik + 1]; ++j) {
636 LO Ikj = Icolind[j];
637 LO Cij = Icol2Ccol[Ikj];
638
639 TEUCHOS_TEST_FOR_EXCEPTION(c_status[Cij] < OLD_ip || c_status[Cij] >= CSR_ip,
640 std::runtime_error, "Trying to insert a new entry into a static graph");
641
642 Cvals[c_status[Cij]] += minusOmegaDval * Aval * Ivals[j];
643 }
644 }
645 }
646 }
647
648#ifdef HAVE_TPETRA_MMM_TIMINGS
649 MM2 = Teuchos::null;
650 MM = Teuchos::null;
651 MM = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("Jacobi Reuse ESFC"))));
652#endif
653
654 C.fillComplete(C.getDomainMap(), C.getRangeMap());
655}
656
657/*********************************************************************************************************/
658template <class Scalar,
659 class LocalOrdinal,
660 class GlobalOrdinal,
661 class LocalOrdinalViewType>
662void KernelWrappers2<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode, LocalOrdinalViewType>::jacobi_A_B_newmatrix_KokkosKernels(Scalar omega,
663 const Vector<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Dinv,
664 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Aview,
665 CrsMatrixStruct<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& Bview,
666 const LocalOrdinalViewType& Acol2Brow,
667 const LocalOrdinalViewType& Acol2Irow,
668 const LocalOrdinalViewType& Bcol2Ccol,
669 const LocalOrdinalViewType& Icol2Ccol,
670 CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>& C,
671 Teuchos::RCP<const Import<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > Cimport,
672 const std::string& label,
673 const Teuchos::RCP<Teuchos::ParameterList>& params) {
674#ifdef HAVE_TPETRA_MMM_TIMINGS
675 std::string prefix_mmm = std::string("TpetraExt ") + label + std::string(": ");
676 using Teuchos::TimeMonitor;
677 Teuchos::RCP<TimeMonitor> MM;
678#endif
679
680 // Check if the diagonal entries exist in debug mode
681 const bool debug = Tpetra::Details::Behavior::debug();
682 if (debug) {
683 auto rowMap = Aview.origMatrix->getRowMap();
684 Tpetra::Vector<Scalar> diags(rowMap);
685 Aview.origMatrix->getLocalDiagCopy(diags);
686 size_t diagLength = rowMap->getLocalNumElements();
687 Teuchos::Array<Scalar> diagonal(diagLength);
688 diags.get1dCopy(diagonal());
689
690 for (size_t i = 0; i < diagLength; ++i) {
691 TEUCHOS_TEST_FOR_EXCEPTION(diagonal[i] == Teuchos::ScalarTraits<Scalar>::zero(),
692 std::runtime_error,
693 "Matrix A has a zero/missing diagonal: " << diagonal[i] << std::endl
694 << "KokkosKernels Jacobi-fused SpGEMM requires nonzero diagonal entries in A" << std::endl);
695 }
696 }
697
698 // Usings
699 using device_t = typename Tpetra::KokkosCompat::KokkosSYCLWrapperNode::device_type;
700 using matrix_t = typename Tpetra::CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode>::local_matrix_device_type;
701 using graph_t = typename matrix_t::StaticCrsGraphType;
702 using lno_view_t = typename graph_t::row_map_type::non_const_type;
703 using int_view_t = Kokkos::View<int*,
704 typename lno_view_t::array_layout,
705 typename lno_view_t::memory_space,
706 typename lno_view_t::memory_traits>;
707 using c_lno_view_t = typename graph_t::row_map_type::const_type;
708 using lno_nnz_view_t = typename graph_t::entries_type::non_const_type;
709 using scalar_view_t = typename matrix_t::values_type::non_const_type;
710
711 // KokkosKernels handle
712 using handle_t = typename KokkosKernels::Experimental::KokkosKernelsHandle<
713 typename lno_view_t::const_value_type, typename lno_nnz_view_t::const_value_type, typename scalar_view_t::const_value_type,
714 typename device_t::execution_space, typename device_t::memory_space, typename device_t::memory_space>;
715 using int_handle_t = typename KokkosKernels::Experimental::KokkosKernelsHandle<
716 typename int_view_t::const_value_type, typename lno_nnz_view_t::const_value_type, typename scalar_view_t::const_value_type,
717 typename device_t::execution_space, typename device_t::memory_space, typename device_t::memory_space>;
718
719 // Merge the B and Bimport matrices
720 const matrix_t Bmerged = Tpetra::MMdetails::merge_matrices(Aview, Bview, Acol2Brow, Acol2Irow, Bcol2Ccol, Icol2Ccol, C.getColMap()->getLocalNumElements());
721
722 // Get the properties and arrays of input matrices
723 const matrix_t Amat = Aview.origMatrix->getLocalMatrixDevice();
724 const matrix_t Bmat = Bview.origMatrix->getLocalMatrixDevice();
725
726 typename handle_t::nnz_lno_t AnumRows = Amat.numRows();
727 typename handle_t::nnz_lno_t BnumRows = Bmerged.numRows();
728 typename handle_t::nnz_lno_t BnumCols = Bmerged.numCols();
729
730 // Arrays of the output matrix
731 lno_view_t row_mapC(Kokkos::ViewAllocateWithoutInitializing("row_mapC"), AnumRows + 1);
732 lno_nnz_view_t entriesC;
733 scalar_view_t valuesC;
734
735 // Options
736 int team_work_size = 16;
737 std::string myalg("SPGEMM_KK_MEMORY");
738 if (!params.is_null()) {
739 if (params->isParameter("sycl: algorithm"))
740 myalg = params->get("sycl: algorithm", myalg);
741 if (params->isParameter("sycl: team work size"))
742 team_work_size = params->get("sycl: team work size", team_work_size);
743 }
744
745 // Get the algorithm mode
746 std::string nodename("SYCL");
747 std::string alg = nodename + std::string(" algorithm");
748 if (!params.is_null() && params->isParameter(alg)) myalg = params->get(alg, myalg);
749 KokkosSparse::SPGEMMAlgorithm alg_enum = KokkosSparse::StringToSPGEMMAlgorithm(myalg);
750
751 // decide whether to use integer-typed row pointers for this spgemm
752 Tpetra::Details::IntRowPtrHelper<decltype(Bmerged)> irph(Bmerged.nnz(), Bmerged.graph.row_map);
753 const bool useIntRowptrs =
754 irph.shouldUseIntRowptrs() &&
755 Aview.origMatrix->getApplyHelper()->shouldUseIntRowptrs();
756
757 if (useIntRowptrs) {
758 int_handle_t kh;
759 kh.create_spgemm_handle(alg_enum);
760 kh.set_team_work_size(team_work_size);
761
762 int_view_t int_row_mapC(Kokkos::ViewAllocateWithoutInitializing("int_row_mapC"), AnumRows + 1);
763
764 auto Aint = Aview.origMatrix->getApplyHelper()->getIntRowptrMatrix(Amat);
765 auto Bint = irph.getIntRowptrMatrix(Bmerged);
766
767 KokkosSparse::spgemm_symbolic(&kh, AnumRows, BnumRows, BnumCols,
768 Aint.graph.row_map, Aint.graph.entries, false,
769 Bint.graph.row_map, Bint.graph.entries, false,
770 int_row_mapC);
771
772 size_t c_nnz_size = kh.get_spgemm_handle()->get_c_nnz();
773 if (c_nnz_size) {
774 entriesC = lno_nnz_view_t(Kokkos::ViewAllocateWithoutInitializing("entriesC"), c_nnz_size);
775 valuesC = scalar_view_t(Kokkos::ViewAllocateWithoutInitializing("valuesC"), c_nnz_size);
776 }
777
778 // even though there is no TPL for this, we have to use the same handle that was used in the symbolic phase,
779 // so need to have a special int-typed call for this as well.
780 KokkosSparse::Experimental::spgemm_jacobi(&kh, AnumRows, BnumRows, BnumCols,
781 Aint.graph.row_map, Aint.graph.entries, Amat.values, false,
782 Bint.graph.row_map, Bint.graph.entries, Bint.values, false,
783 int_row_mapC, entriesC, valuesC,
784 omega, Dinv.getLocalViewDevice(Access::ReadOnly));
785 // transfer the integer rowptrs back to the correct rowptr type
786 Kokkos::parallel_for(
787 int_row_mapC.size(), KOKKOS_LAMBDA(int i) { row_mapC(i) = int_row_mapC(i); });
788 kh.destroy_spgemm_handle();
789 } else {
790 handle_t kh;
791 kh.create_spgemm_handle(alg_enum);
792 kh.set_team_work_size(team_work_size);
793
794 KokkosSparse::spgemm_symbolic(&kh, AnumRows, BnumRows, BnumCols,
795 Amat.graph.row_map, Amat.graph.entries, false,
796 Bmerged.graph.row_map, Bmerged.graph.entries, false,
797 row_mapC);
798
799 size_t c_nnz_size = kh.get_spgemm_handle()->get_c_nnz();
800 if (c_nnz_size) {
801 entriesC = lno_nnz_view_t(Kokkos::ViewAllocateWithoutInitializing("entriesC"), c_nnz_size);
802 valuesC = scalar_view_t(Kokkos::ViewAllocateWithoutInitializing("valuesC"), c_nnz_size);
803 }
804 KokkosSparse::Experimental::spgemm_jacobi(&kh, AnumRows, BnumRows, BnumCols,
805 Amat.graph.row_map, Amat.graph.entries, Amat.values, false,
806 Bmerged.graph.row_map, Bmerged.graph.entries, Bmerged.values, false,
807 row_mapC, entriesC, valuesC,
808 omega, Dinv.getLocalViewDevice(Access::ReadOnly));
809 kh.destroy_spgemm_handle();
810 }
811
812#ifdef HAVE_TPETRA_MMM_TIMINGS
813 MM = Teuchos::null;
814 MM = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("Jacobi Newmatrix SYCLSort"))));
815#endif
816
817 // Sort & set values
818 if (params.is_null() || params->get("sort entries", true))
819 Import_Util::sortCrsEntries(row_mapC, entriesC, valuesC);
820 C.setAllValues(row_mapC, entriesC, valuesC);
821
822#ifdef HAVE_TPETRA_MMM_TIMINGS
823 MM = Teuchos::null;
824 MM = rcp(new TimeMonitor(*TimeMonitor::getNewTimer(prefix_mmm + std::string("Jacobi Newmatrix SYCLESFC"))));
825#endif
826
827 // Final Fillcomplete
828 Teuchos::RCP<Teuchos::ParameterList> labelList = rcp(new Teuchos::ParameterList);
829 labelList->set("Timer Label", label);
830 if (!params.is_null()) labelList->set("compute global constants", params->get("compute global constants", true));
831 Teuchos::RCP<const Export<LocalOrdinal, GlobalOrdinal, Tpetra::KokkosCompat::KokkosSYCLWrapperNode> > dummyExport;
832 C.expertStaticFillComplete(Bview.origMatrix->getDomainMap(), Aview.origMatrix->getRangeMap(), Cimport, dummyExport, labelList);
833}
834
835} // namespace MMdetails
836} // namespace Tpetra
837
838#endif // SYCL
839
840#endif
Tpetra::CrsMatrix::local_matrix_device_type
KokkosSparse::CrsMatrix< impl_scalar_type, local_ordinal_type, device_type, void, typename local_graph_device_type::size_type > local_matrix_device_type
The specialization of Kokkos::CrsMatrix that represents the part of the sparse matrix on each MPI pro...
Definition Tpetra_CrsMatrix_decl.hpp:472
Tpetra::CrsMatrixStruct
Struct that holds views of the contents of a CrsMatrix.
Definition TpetraExt_MMHelpers_decl.hpp:36
Tpetra::CrsMatrixStruct::origMatrix
Teuchos::RCP< const CrsMatrix< Scalar, LocalOrdinal, GlobalOrdinal, Node > > origMatrix
The original matrix.
Definition TpetraExt_MMHelpers_decl.hpp:60
Tpetra::Details::Behavior::debug
static bool debug()
Whether Tpetra is in debug mode.
Definition Tpetra_Details_Behavior.cpp:238
Tpetra
Namespace Tpetra contains the class and methods constituting the Tpetra library.
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