1 /* 2 Implements the Kokkos kernel 3 */ 4 #include <petscconf.h> 5 // On Sunspot, as of 05/04/2023, the default SYCL compiler oneapi/eng-compiler/2022.12.30.003 6 // failed to link this file, so we add "defined(PETSC_HAVE_SYCL)" to disable landau with SYCL 7 // to facilitate petsc users' experiments on Sunspot. 8 // TODO: remove it when Intel fixed the bug. See MR !6412 9 #if defined(PETSC_HAVE_CUDA_CLANG) || defined(PETSC_HAVE_SYCL) 10 #include <petsclandau.h> 11 #define LANDAU_NOT_IMPLEMENTED SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "Not supported with CLANG or SYCL") 12 PetscErrorCode LandauKokkosJacobian(DM[], const PetscInt, const PetscInt, const PetscInt, const PetscInt, const PetscInt[], PetscReal[], PetscScalar[], const PetscScalar[], const LandauStaticData *, const PetscReal, const PetscLogEvent[], const PetscInt[], const PetscInt[], Mat[], Mat) 13 { 14 LANDAU_NOT_IMPLEMENTED; 15 } 16 PetscErrorCode LandauKokkosCreateMatMaps(P4estVertexMaps *, pointInterpolationP4est (*)[LANDAU_MAX_Q_FACE], PetscInt[], PetscInt) 17 { 18 LANDAU_NOT_IMPLEMENTED; 19 } 20 PetscErrorCode LandauKokkosDestroyMatMaps(P4estVertexMaps *, PetscInt) 21 { 22 LANDAU_NOT_IMPLEMENTED; 23 } 24 PetscErrorCode LandauKokkosStaticDataSet(DM, const PetscInt, const PetscInt, const PetscInt, const PetscInt, PetscInt[], PetscInt[], PetscInt[], PetscReal[], PetscReal[], PetscReal[], PetscReal[], PetscReal[], PetscReal[], PetscReal[], PetscReal[], PetscReal[], LandauStaticData *) 25 { 26 LANDAU_NOT_IMPLEMENTED; 27 } 28 PetscErrorCode LandauKokkosStaticDataClear(LandauStaticData *) 29 { 30 LANDAU_NOT_IMPLEMENTED; 31 } 32 #else 33 #include <petscvec_kokkos.hpp> 34 #include <petsclandau.h> 35 #include <petsc/private/dmpleximpl.h> /*I "petscdmplex.h" I*/ 36 #include <petsc/private/deviceimpl.h> 37 #include <petscts.h> 38 39 #include <Kokkos_Core.hpp> 40 #include <cstdio> 41 typedef Kokkos::TeamPolicy<>::member_type team_member; 42 #include "../land_tensors.h" 43 44 namespace landau_inner_red 45 { // namespace helps with name resolution in reduction identity 46 template <class ScalarType> 47 struct array_type { 48 ScalarType gg2[LANDAU_DIM]; 49 ScalarType gg3[LANDAU_DIM][LANDAU_DIM]; 50 51 KOKKOS_INLINE_FUNCTION // Default constructor - Initialize to 0's 52 array_type() 53 { 54 for (int j = 0; j < LANDAU_DIM; j++) { 55 gg2[j] = 0; 56 for (int k = 0; k < LANDAU_DIM; k++) gg3[j][k] = 0; 57 } 58 } 59 KOKKOS_INLINE_FUNCTION // Copy Constructor 60 array_type(const array_type &rhs) 61 { 62 for (int j = 0; j < LANDAU_DIM; j++) { 63 gg2[j] = rhs.gg2[j]; 64 for (int k = 0; k < LANDAU_DIM; k++) gg3[j][k] = rhs.gg3[j][k]; 65 } 66 } 67 KOKKOS_INLINE_FUNCTION // add operator 68 array_type & 69 operator+=(const array_type &src) 70 { 71 for (int j = 0; j < LANDAU_DIM; j++) { 72 gg2[j] += src.gg2[j]; 73 for (int k = 0; k < LANDAU_DIM; k++) gg3[j][k] += src.gg3[j][k]; 74 } 75 return *this; 76 } 77 KOKKOS_INLINE_FUNCTION // volatile add operator 78 void 79 operator+=(const volatile array_type &src) volatile 80 { 81 for (int j = 0; j < LANDAU_DIM; j++) { 82 gg2[j] += src.gg2[j]; 83 for (int k = 0; k < LANDAU_DIM; k++) gg3[j][k] += src.gg3[j][k]; 84 } 85 } 86 }; 87 typedef array_type<PetscReal> TensorValueType; // used to simplify code below 88 } // namespace landau_inner_red 89 90 namespace Kokkos 91 { //reduction identity must be defined in Kokkos namespace 92 template <> 93 struct reduction_identity<landau_inner_red::TensorValueType> { 94 KOKKOS_FORCEINLINE_FUNCTION static landau_inner_red::TensorValueType sum() { return landau_inner_red::TensorValueType(); } 95 }; 96 } // namespace Kokkos 97 98 extern "C" { 99 PetscErrorCode LandauKokkosCreateMatMaps(P4estVertexMaps maps[], pointInterpolationP4est (*pointMaps)[LANDAU_MAX_Q_FACE], PetscInt Nf[], PetscInt grid) 100 { 101 P4estVertexMaps h_maps; /* host container */ 102 const Kokkos::View<pointInterpolationP4est *[LANDAU_MAX_Q_FACE], Kokkos::LayoutRight, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_points((pointInterpolationP4est *)pointMaps, maps[grid].num_reduced); 103 const Kokkos::View<LandauIdx *[LANDAU_MAX_SPECIES][LANDAU_MAX_NQND], Kokkos::LayoutRight, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_gidx((LandauIdx *)maps[grid].gIdx, maps[grid].num_elements); 104 Kokkos::View<pointInterpolationP4est *[LANDAU_MAX_Q_FACE], Kokkos::LayoutRight> *d_points = new Kokkos::View<pointInterpolationP4est *[LANDAU_MAX_Q_FACE], Kokkos::LayoutRight>("points", maps[grid].num_reduced); 105 Kokkos::View<LandauIdx *[LANDAU_MAX_SPECIES][LANDAU_MAX_NQND], Kokkos::LayoutRight> *d_gidx = new Kokkos::View<LandauIdx *[LANDAU_MAX_SPECIES][LANDAU_MAX_NQND], Kokkos::LayoutRight>("gIdx", maps[grid].num_elements); 106 107 PetscFunctionBegin; 108 Kokkos::deep_copy(*d_gidx, h_gidx); 109 Kokkos::deep_copy(*d_points, h_points); 110 h_maps.num_elements = maps[grid].num_elements; 111 h_maps.num_face = maps[grid].num_face; 112 h_maps.num_reduced = maps[grid].num_reduced; 113 h_maps.deviceType = maps[grid].deviceType; 114 h_maps.numgrids = maps[grid].numgrids; 115 h_maps.Nf = Nf[grid]; 116 h_maps.c_maps = (pointInterpolationP4est(*)[LANDAU_MAX_Q_FACE])d_points->data(); 117 maps[grid].vp1 = (void *)d_points; 118 h_maps.gIdx = (LandauIdx(*)[LANDAU_MAX_SPECIES][LANDAU_MAX_NQND])d_gidx->data(); 119 maps[grid].vp2 = (void *)d_gidx; 120 { 121 Kokkos::View<P4estVertexMaps, Kokkos::HostSpace> h_maps_k(&h_maps); 122 Kokkos::View<P4estVertexMaps> *d_maps_k = new Kokkos::View<P4estVertexMaps>(Kokkos::create_mirror(Kokkos::DefaultExecutionSpace::memory_space(), h_maps_k)); 123 Kokkos::deep_copy(*d_maps_k, h_maps_k); 124 maps[grid].d_self = d_maps_k->data(); 125 maps[grid].vp3 = (void *)d_maps_k; 126 } 127 PetscFunctionReturn(PETSC_SUCCESS); 128 } 129 PetscErrorCode LandauKokkosDestroyMatMaps(P4estVertexMaps maps[], PetscInt num_grids) 130 { 131 PetscFunctionBegin; 132 for (PetscInt grid = 0; grid < num_grids; grid++) { 133 auto a = static_cast<Kokkos::View<pointInterpolationP4est *[LANDAU_MAX_Q_FACE], Kokkos::LayoutRight> *>(maps[grid].vp1); 134 auto b = static_cast<Kokkos::View<LandauIdx *[LANDAU_MAX_SPECIES][LANDAU_MAX_NQND], Kokkos::LayoutRight> *>(maps[grid].vp2); 135 auto c = static_cast<Kokkos::View<P4estVertexMaps *> *>(maps[grid].vp3); 136 delete a; 137 delete b; 138 delete c; 139 } 140 PetscFunctionReturn(PETSC_SUCCESS); 141 } 142 143 PetscErrorCode LandauKokkosStaticDataSet(DM plex, const PetscInt Nq, const PetscInt Nb, const PetscInt batch_sz, const PetscInt num_grids, PetscInt a_numCells[], PetscInt a_species_offset[], PetscInt a_mat_offset[], PetscReal a_nu_alpha[], PetscReal a_nu_beta[], PetscReal a_invMass[], PetscReal a_lambdas[], PetscReal a_invJ[], PetscReal a_x[], PetscReal a_y[], PetscReal a_z[], PetscReal a_w[], LandauStaticData *SData_d) 144 { 145 PetscReal *BB, *DD; 146 PetscTabulation *Tf; 147 PetscInt dim; 148 PetscInt ip_offset[LANDAU_MAX_GRIDS + 1], ipf_offset[LANDAU_MAX_GRIDS + 1], elem_offset[LANDAU_MAX_GRIDS + 1], nip, IPf_sz, Nftot; 149 PetscDS prob; 150 151 PetscFunctionBegin; 152 PetscCall(DMGetDimension(plex, &dim)); 153 PetscCall(DMGetDS(plex, &prob)); 154 PetscCheck(LANDAU_DIM == dim, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "dim %" PetscInt_FMT " != LANDAU_DIM %d", dim, LANDAU_DIM); 155 PetscCall(PetscDSGetTabulation(prob, &Tf)); 156 BB = Tf[0]->T[0]; 157 DD = Tf[0]->T[1]; 158 ip_offset[0] = ipf_offset[0] = elem_offset[0] = 0; 159 nip = 0; 160 IPf_sz = 0; 161 for (PetscInt grid = 0; grid < num_grids; grid++) { 162 PetscInt nfloc = a_species_offset[grid + 1] - a_species_offset[grid]; 163 elem_offset[grid + 1] = elem_offset[grid] + a_numCells[grid]; 164 nip += a_numCells[grid] * Nq; 165 ip_offset[grid + 1] = nip; 166 IPf_sz += Nq * nfloc * a_numCells[grid]; 167 ipf_offset[grid + 1] = IPf_sz; 168 } 169 Nftot = a_species_offset[num_grids]; 170 PetscCall(PetscKokkosInitializeCheck()); 171 { 172 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_alpha(a_nu_alpha, Nftot); 173 auto alpha = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("alpha", Nftot); 174 SData_d->alpha = static_cast<void *>(alpha); 175 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_beta(a_nu_beta, Nftot); 176 auto beta = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("beta", Nftot); 177 SData_d->beta = static_cast<void *>(beta); 178 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_invMass(a_invMass, Nftot); 179 auto invMass = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("invMass", Nftot); 180 SData_d->invMass = static_cast<void *>(invMass); 181 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_lambdas(a_lambdas, LANDAU_MAX_GRIDS * LANDAU_MAX_GRIDS); 182 auto lambdas = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("lambdas", LANDAU_MAX_GRIDS * LANDAU_MAX_GRIDS); 183 SData_d->lambdas = static_cast<void *>(lambdas); 184 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_BB(BB, Nq * Nb); 185 auto B = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("B", Nq * Nb); 186 SData_d->B = static_cast<void *>(B); 187 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_DD(DD, Nq * Nb * dim); 188 auto D = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("D", Nq * Nb * dim); 189 SData_d->D = static_cast<void *>(D); 190 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_invJ(a_invJ, nip * dim * dim); 191 auto invJ = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("invJ", nip * dim * dim); 192 SData_d->invJ = static_cast<void *>(invJ); 193 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_x(a_x, nip); 194 auto x = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("x", nip); 195 SData_d->x = static_cast<void *>(x); 196 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_y(a_y, nip); 197 auto y = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("y", nip); 198 SData_d->y = static_cast<void *>(y); 199 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_w(a_w, nip); 200 auto w = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("w", nip); 201 SData_d->w = static_cast<void *>(w); 202 203 Kokkos::deep_copy(*alpha, h_alpha); 204 Kokkos::deep_copy(*beta, h_beta); 205 Kokkos::deep_copy(*invMass, h_invMass); 206 Kokkos::deep_copy(*lambdas, h_lambdas); 207 Kokkos::deep_copy(*B, h_BB); 208 Kokkos::deep_copy(*D, h_DD); 209 Kokkos::deep_copy(*invJ, h_invJ); 210 Kokkos::deep_copy(*x, h_x); 211 Kokkos::deep_copy(*y, h_y); 212 Kokkos::deep_copy(*w, h_w); 213 214 if (dim == 3) { 215 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_z(a_z, nip); 216 auto z = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("z", nip); 217 SData_d->z = static_cast<void *>(z); 218 Kokkos::deep_copy(*z, h_z); 219 } else SData_d->z = NULL; 220 221 // 222 const Kokkos::View<PetscInt *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_NCells(a_numCells, num_grids); 223 auto nc = new Kokkos::View<PetscInt *, Kokkos::LayoutLeft>("NCells", num_grids); 224 SData_d->NCells = static_cast<void *>(nc); 225 Kokkos::deep_copy(*nc, h_NCells); 226 227 const Kokkos::View<PetscInt *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_species_offset(a_species_offset, num_grids + 1); 228 auto soff = new Kokkos::View<PetscInt *, Kokkos::LayoutLeft>("species_offset", num_grids + 1); 229 SData_d->species_offset = static_cast<void *>(soff); 230 Kokkos::deep_copy(*soff, h_species_offset); 231 232 const Kokkos::View<PetscInt *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_mat_offset(a_mat_offset, num_grids + 1); 233 auto moff = new Kokkos::View<PetscInt *, Kokkos::LayoutLeft>("mat_offset", num_grids + 1); 234 SData_d->mat_offset = static_cast<void *>(moff); 235 Kokkos::deep_copy(*moff, h_mat_offset); 236 237 const Kokkos::View<PetscInt *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_ip_offset(ip_offset, num_grids + 1); 238 auto ipoff = new Kokkos::View<PetscInt *, Kokkos::LayoutLeft>("ip_offset", num_grids + 1); 239 SData_d->ip_offset = static_cast<void *>(ipoff); 240 Kokkos::deep_copy(*ipoff, h_ip_offset); 241 242 const Kokkos::View<PetscInt *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_elem_offset(elem_offset, num_grids + 1); 243 auto eoff = new Kokkos::View<PetscInt *, Kokkos::LayoutLeft>("elem_offset", num_grids + 1); 244 SData_d->elem_offset = static_cast<void *>(eoff); 245 Kokkos::deep_copy(*eoff, h_elem_offset); 246 247 const Kokkos::View<PetscInt *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_ipf_offset(ipf_offset, num_grids + 1); 248 auto ipfoff = new Kokkos::View<PetscInt *, Kokkos::LayoutLeft>("ipf_offset", num_grids + 1); 249 SData_d->ipf_offset = static_cast<void *>(ipfoff); 250 Kokkos::deep_copy(*ipfoff, h_ipf_offset); 251 #if defined(LANDAU_LAYOUT_LEFT) // preallocate dynamic data, no copy 252 auto ipfdf_data = new Kokkos::View<PetscReal ***, Kokkos::LayoutLeft>("fdf", batch_sz, dim + 1, IPf_sz); 253 #else 254 auto ipfdf_data = new Kokkos::View<PetscReal ***, Kokkos::LayoutRight>("fdf", batch_sz, dim + 1, IPf_sz); 255 #endif 256 SData_d->ipfdf_data = static_cast<void *>(ipfdf_data); 257 auto Eq_m = new Kokkos::View<PetscReal *, Kokkos::LayoutLeft>("Eq_m", Nftot); // allocate but do not set, same for whole batch 258 SData_d->Eq_m = static_cast<void *>(Eq_m); 259 const Kokkos::View<LandauIdx *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_coo_elem_offsets((LandauIdx *)SData_d->coo_elem_offsets, SData_d->coo_n_cellsTot + 1); 260 auto coo_elem_offsets = new Kokkos::View<LandauIdx *, Kokkos::LayoutLeft>("coo_elem_offsets", SData_d->coo_n_cellsTot + 1); 261 const Kokkos::View<LandauIdx *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_coo_elem_fullNb((LandauIdx *)SData_d->coo_elem_fullNb, SData_d->coo_n_cellsTot); 262 auto coo_elem_fullNb = new Kokkos::View<LandauIdx *, Kokkos::LayoutLeft>("coo_elem_offsets", SData_d->coo_n_cellsTot); 263 const Kokkos::View<LandauIdx *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_coo_elem_point_offsets((LandauIdx *)SData_d->coo_elem_point_offsets, SData_d->coo_n_cellsTot * (LANDAU_MAX_NQND + 1)); 264 auto coo_elem_point_offsets = new Kokkos::View<LandauIdx *, Kokkos::LayoutLeft>("coo_elem_point_offsets", SData_d->coo_n_cellsTot * (LANDAU_MAX_NQND + 1)); 265 // assign & copy 266 Kokkos::deep_copy(*coo_elem_offsets, h_coo_elem_offsets); 267 Kokkos::deep_copy(*coo_elem_fullNb, h_coo_elem_fullNb); 268 Kokkos::deep_copy(*coo_elem_point_offsets, h_coo_elem_point_offsets); 269 // need to free this now and use pointer space 270 PetscCall(PetscFree3(SData_d->coo_elem_offsets, SData_d->coo_elem_fullNb, SData_d->coo_elem_point_offsets)); 271 SData_d->coo_elem_offsets = static_cast<void *>(coo_elem_offsets); 272 SData_d->coo_elem_fullNb = static_cast<void *>(coo_elem_fullNb); 273 SData_d->coo_elem_point_offsets = static_cast<void *>(coo_elem_point_offsets); 274 auto coo_vals = new Kokkos::View<PetscScalar *, Kokkos::LayoutRight, Kokkos::DefaultExecutionSpace>("coo_vals", SData_d->coo_size); 275 SData_d->coo_vals = static_cast<void *>(coo_vals); 276 } 277 SData_d->maps = NULL; // not used 278 PetscFunctionReturn(PETSC_SUCCESS); 279 } 280 281 PetscErrorCode LandauKokkosStaticDataClear(LandauStaticData *SData_d) 282 { 283 PetscFunctionBegin; 284 if (SData_d->alpha) { 285 auto alpha = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->alpha); 286 delete alpha; 287 SData_d->alpha = NULL; 288 auto beta = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->beta); 289 delete beta; 290 auto invMass = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->invMass); 291 delete invMass; 292 auto lambdas = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->lambdas); 293 delete lambdas; 294 auto B = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->B); 295 delete B; 296 auto D = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->D); 297 delete D; 298 auto invJ = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->invJ); 299 delete invJ; 300 auto x = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->x); 301 delete x; 302 auto y = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->y); 303 delete y; 304 if (SData_d->z) { 305 auto z = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->z); 306 delete z; 307 } 308 #if defined(LANDAU_LAYOUT_LEFT) // preallocate dynamic data, no copy 309 auto z = static_cast<Kokkos::View<PetscReal ***, Kokkos::LayoutLeft> *>(SData_d->ipfdf_data); 310 #else 311 auto z = static_cast<Kokkos::View<PetscReal ***, Kokkos::LayoutRight> *>(SData_d->ipfdf_data); 312 #endif 313 delete z; 314 auto w = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->w); 315 delete w; 316 auto Eq_m = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->Eq_m); 317 delete Eq_m; 318 // offset 319 auto nc = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->NCells); 320 delete nc; 321 auto soff = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->species_offset); 322 delete soff; 323 auto moff = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->mat_offset); 324 delete moff; 325 auto ipoff = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->ip_offset); 326 delete ipoff; 327 auto eoff = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->elem_offset); 328 delete eoff; 329 auto ipfoff = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->ipf_offset); 330 delete ipfoff; 331 auto coo_elem_offsets = static_cast<Kokkos::View<LandauIdx *, Kokkos::LayoutLeft> *>((void *)SData_d->coo_elem_offsets); 332 delete coo_elem_offsets; 333 auto coo_elem_fullNb = static_cast<Kokkos::View<LandauIdx *, Kokkos::LayoutLeft> *>((void *)SData_d->coo_elem_fullNb); 334 delete coo_elem_fullNb; 335 auto coo_elem_point_offsets = static_cast<Kokkos::View<LandauIdx *, Kokkos::LayoutLeft> *>((void *)SData_d->coo_elem_point_offsets); 336 delete coo_elem_point_offsets; 337 SData_d->coo_elem_offsets = NULL; 338 SData_d->coo_elem_point_offsets = NULL; 339 SData_d->coo_elem_fullNb = NULL; 340 auto coo_vals = static_cast<Kokkos::View<PetscScalar *, Kokkos::LayoutRight, Kokkos::DefaultExecutionSpace> *>((void *)SData_d->coo_vals); 341 delete coo_vals; 342 } 343 PetscFunctionReturn(PETSC_SUCCESS); 344 } 345 346 #define KOKKOS_SHARED_LEVEL 0 // 0 is shared, 1 is global 347 348 KOKKOS_INLINE_FUNCTION 349 PetscErrorCode landau_mat_assemble(PetscScalar *coo_vals, const PetscScalar Aij, const PetscInt f, const PetscInt g, const PetscInt Nb, PetscInt moffset, const PetscInt elem, const PetscInt fieldA, const P4estVertexMaps *d_maps, const LandauIdx coo_elem_offsets[], const LandauIdx coo_elem_fullNb[], const LandauIdx (*coo_elem_point_offsets)[LANDAU_MAX_NQND + 1], const PetscInt glb_elem_idx, const PetscInt bid_coo_sz_batch) 350 { 351 PetscInt idx, q, nr, nc; 352 const LandauIdx *const Idxs = &d_maps->gIdx[elem][fieldA][0]; 353 PetscScalar row_scale[LANDAU_MAX_Q_FACE] = {0}, col_scale[LANDAU_MAX_Q_FACE] = {0}; 354 { // mirror (i,j) in CreateStaticGPUData 355 const int fullNb = coo_elem_fullNb[glb_elem_idx], fullNb2 = fullNb * fullNb; 356 idx = Idxs[f]; 357 if (idx >= 0) { 358 nr = 1; 359 row_scale[0] = 1.; 360 } else { 361 idx = -idx - 1; 362 for (q = 0, nr = 0; q < d_maps->num_face; q++, nr++) { 363 if (d_maps->c_maps[idx][q].gid < 0) break; 364 row_scale[q] = d_maps->c_maps[idx][q].scale; 365 } 366 } 367 idx = Idxs[g]; 368 if (idx >= 0) { 369 nc = 1; 370 col_scale[0] = 1.; 371 } else { 372 idx = -idx - 1; 373 nc = d_maps->num_face; 374 for (q = 0, nc = 0; q < d_maps->num_face; q++, nc++) { 375 if (d_maps->c_maps[idx][q].gid < 0) break; 376 col_scale[q] = d_maps->c_maps[idx][q].scale; 377 } 378 } 379 const int idx0 = bid_coo_sz_batch + coo_elem_offsets[glb_elem_idx] + fieldA * fullNb2 + fullNb * coo_elem_point_offsets[glb_elem_idx][f] + nr * coo_elem_point_offsets[glb_elem_idx][g]; 380 for (int q = 0, idx2 = idx0; q < nr; q++) { 381 for (int d = 0; d < nc; d++, idx2++) coo_vals[idx2] = row_scale[q] * col_scale[d] * Aij; 382 } 383 } 384 return PETSC_SUCCESS; 385 } 386 387 PetscErrorCode LandauKokkosJacobian(DM plex[], const PetscInt Nq, const PetscInt Nb, const PetscInt batch_sz, const PetscInt num_grids, const PetscInt a_numCells[], PetscReal a_Eq_m[], PetscScalar a_elem_closure[], const PetscScalar a_xarray[], const LandauStaticData *SData_d, const PetscReal shift, const PetscLogEvent events[], const PetscInt a_mat_offset[], const PetscInt a_species_offset[], Mat subJ[], Mat JacP) 388 { 389 using scr_mem_t = Kokkos::DefaultExecutionSpace::scratch_memory_space; 390 using real2_scr_t = Kokkos::View<PetscScalar **, Kokkos::LayoutRight, scr_mem_t>; 391 using g2_scr_t = Kokkos::View<PetscReal ***, Kokkos::LayoutRight, scr_mem_t>; 392 using g3_scr_t = Kokkos::View<PetscReal ****, Kokkos::LayoutRight, scr_mem_t>; 393 PetscInt dim, num_cells_max, Nf_max, num_cells_batch; 394 int nfaces = 0, vector_size = 512 / Nq; 395 LandauCtx *ctx; 396 PetscReal *d_Eq_m = NULL; 397 PetscScalar *d_vertex_f = NULL; 398 P4estVertexMaps *maps[LANDAU_MAX_GRIDS]; // this gets captured 399 PetscContainer container; 400 const int conc = Kokkos::DefaultExecutionSpace().concurrency(), openmp = !!(conc < 1000), team_size = (openmp == 0) ? Nq : 1; 401 const PetscInt coo_sz_batch = SData_d->coo_size / batch_sz; // capture 402 auto d_alpha_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->alpha); //static data 403 const PetscReal *d_alpha = d_alpha_k->data(); 404 const PetscInt Nftot = d_alpha_k->size(); // total number of species 405 auto d_beta_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->beta); 406 const PetscReal *d_beta = d_beta_k->data(); 407 auto d_invMass_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->invMass); 408 const PetscReal *d_invMass = d_invMass_k->data(); 409 auto d_lambdas_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->lambdas); 410 const PetscReal *d_lambdas = d_lambdas_k->data(); 411 auto d_B_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->B); 412 const PetscReal *d_BB = d_B_k->data(); 413 auto d_D_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->D); 414 const PetscReal *d_DD = d_D_k->data(); 415 auto d_invJ_k = *static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->invJ); // use Kokkos vector in kernels 416 auto d_x_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->x); //static data 417 const PetscReal *d_x = d_x_k->data(); 418 auto d_y_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->y); //static data 419 const PetscReal *d_y = d_y_k->data(); 420 auto d_z_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->z); //static data 421 const PetscReal *d_z = (LANDAU_DIM == 3) ? d_z_k->data() : NULL; 422 auto d_w_k = *static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->w); //static data 423 const PetscReal *d_w = d_w_k.data(); 424 // grid offsets - single vertex grid data 425 auto d_numCells_k = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->NCells); 426 const PetscInt *d_numCells = d_numCells_k->data(); 427 auto d_species_offset_k = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->species_offset); 428 const PetscInt *d_species_offset = d_species_offset_k->data(); 429 auto d_mat_offset_k = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->mat_offset); 430 const PetscInt *d_mat_offset = d_mat_offset_k->data(); 431 auto d_ip_offset_k = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->ip_offset); 432 const PetscInt *d_ip_offset = d_ip_offset_k->data(); 433 auto d_ipf_offset_k = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->ipf_offset); 434 const PetscInt *d_ipf_offset = d_ipf_offset_k->data(); 435 auto d_elem_offset_k = static_cast<Kokkos::View<PetscInt *, Kokkos::LayoutLeft> *>(SData_d->elem_offset); 436 const PetscInt *d_elem_offset = d_elem_offset_k->data(); 437 #if defined(LANDAU_LAYOUT_LEFT) // preallocate dynamic data, including batched vertices 438 Kokkos::View<PetscReal ***, Kokkos::LayoutLeft> d_fdf_k = *static_cast<Kokkos::View<PetscReal ***, Kokkos::LayoutLeft> *>(SData_d->ipfdf_data); 439 #else 440 Kokkos::View<PetscReal ***, Kokkos::LayoutRight> d_fdf_k = *static_cast<Kokkos::View<PetscReal ***, Kokkos::LayoutRight> *>(SData_d->ipfdf_data); 441 #endif 442 auto d_Eq_m_k = static_cast<Kokkos::View<PetscReal *, Kokkos::LayoutLeft> *>(SData_d->Eq_m); // static storage, dynamic data - E(t), copy later, single vertex 443 // COO 444 auto d_coo_elem_offsets_k = static_cast<Kokkos::View<LandauIdx *, Kokkos::LayoutLeft> *>(SData_d->coo_elem_offsets); 445 LandauIdx *d_coo_elem_offsets = (SData_d->coo_size == 0) ? NULL : d_coo_elem_offsets_k->data(); 446 auto d_coo_elem_fullNb_k = static_cast<Kokkos::View<LandauIdx *, Kokkos::LayoutLeft> *>(SData_d->coo_elem_fullNb); 447 LandauIdx *d_coo_elem_fullNb = (SData_d->coo_size == 0) ? NULL : d_coo_elem_fullNb_k->data(); 448 auto d_coo_elem_point_offsets_k = static_cast<Kokkos::View<LandauIdx *, Kokkos::LayoutLeft> *>(SData_d->coo_elem_point_offsets); 449 LandauIdx(*d_coo_elem_point_offsets)[LANDAU_MAX_NQND + 1] = (SData_d->coo_size == 0) ? NULL : (LandauIdx(*)[LANDAU_MAX_NQND + 1]) d_coo_elem_point_offsets_k->data(); 450 auto d_coo_vals_k = static_cast<Kokkos::View<PetscScalar *, Kokkos::LayoutRight> *>(SData_d->coo_vals); 451 PetscScalar *d_coo_vals = (SData_d->coo_size == 0) ? NULL : d_coo_vals_k->data(); 452 453 PetscFunctionBegin; 454 while (vector_size & (vector_size - 1)) vector_size = vector_size & (vector_size - 1); 455 if (vector_size > 16) vector_size = 16; // printf("DEBUG\n"); 456 PetscCall(PetscLogEventBegin(events[3], 0, 0, 0, 0)); 457 PetscCall(DMGetApplicationContext(plex[0], &ctx)); 458 PetscCheck(ctx, PETSC_COMM_SELF, PETSC_ERR_PLIB, "no context"); 459 PetscCall(DMGetDimension(plex[0], &dim)); 460 PetscCheck(LANDAU_DIM == dim, PETSC_COMM_WORLD, PETSC_ERR_PLIB, "dim %" PetscInt_FMT " != LANDAU_DIM %d", dim, LANDAU_DIM); 461 if (ctx->gpu_assembly) { 462 PetscCall(PetscObjectQuery((PetscObject)JacP, "assembly_maps", (PetscObject *)&container)); 463 if (container) { 464 P4estVertexMaps *h_maps = NULL; 465 PetscCall(PetscContainerGetPointer(container, (void **)&h_maps)); 466 for (PetscInt grid = 0; grid < num_grids; grid++) { 467 if (h_maps[grid].d_self) { 468 maps[grid] = h_maps[grid].d_self; 469 nfaces = h_maps[grid].num_face; // nface=0 for CPU assembly 470 } else { 471 SETERRQ(PETSC_COMM_SELF, PETSC_ERR_PLIB, "GPU assembly but no metadata in container"); 472 } 473 } 474 PetscCheck(d_coo_vals, PETSC_COMM_SELF, PETSC_ERR_PLIB, "d_coo_vals==0"); 475 } else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_PLIB, "GPU assembly but no metadata in container"); 476 } else { 477 for (PetscInt grid = 0; grid < num_grids; grid++) maps[grid] = NULL; 478 nfaces = 0; 479 container = NULL; 480 } 481 num_cells_batch = Nf_max = num_cells_max = 0; 482 for (PetscInt grid = 0; grid < num_grids; grid++) { 483 int Nfloc = a_species_offset[grid + 1] - a_species_offset[grid]; 484 if (Nfloc > Nf_max) Nf_max = Nfloc; 485 if (a_numCells[grid] > num_cells_max) num_cells_max = a_numCells[grid]; 486 num_cells_batch += a_numCells[grid]; // we don't have a host element offset here (but in ctx) 487 } 488 const int elem_mat_num_cells_max_grid = container ? 0 : num_cells_max; 489 #ifdef LAND_SUPPORT_CPU_ASS 490 const int totDim_max = Nf_max * Nb, elem_mat_size_max = totDim_max * totDim_max; 491 Kokkos::View<PetscScalar ****, Kokkos::LayoutRight> d_elem_mats("element matrices", batch_sz, num_grids, elem_mat_num_cells_max_grid, elem_mat_size_max); // not used (cpu assembly) 492 #endif 493 const Kokkos::View<PetscReal *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_Eq_m_k(a_Eq_m, Nftot); 494 if (a_elem_closure || a_xarray) { 495 Kokkos::deep_copy(*d_Eq_m_k, h_Eq_m_k); 496 d_Eq_m = d_Eq_m_k->data(); 497 } else d_Eq_m = NULL; 498 PetscCall(PetscKokkosInitializeCheck()); 499 PetscCall(PetscLogEventEnd(events[3], 0, 0, 0, 0)); 500 if (a_elem_closure || a_xarray) { // Jacobian, create f & df 501 Kokkos::View<PetscScalar *, Kokkos::LayoutLeft> *d_vertex_f_k = NULL; 502 PetscCall(PetscLogEventBegin(events[1], 0, 0, 0, 0)); 503 if (a_elem_closure) { 504 PetscInt closure_sz = 0; // argh, don't have this on the host!!! 505 for (PetscInt grid = 0; grid < num_grids; grid++) { 506 PetscInt nfloc = a_species_offset[grid + 1] - a_species_offset[grid]; 507 closure_sz += Nb * nfloc * a_numCells[grid]; 508 } 509 closure_sz *= batch_sz; 510 d_vertex_f_k = new Kokkos::View<PetscScalar *, Kokkos::LayoutLeft>("closure", closure_sz); 511 const Kokkos::View<PetscScalar *, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged>> h_closure_k(a_elem_closure, closure_sz); // Vertex data for each element 512 Kokkos::deep_copy(*d_vertex_f_k, h_closure_k); 513 d_vertex_f = d_vertex_f_k->data(); 514 } else { 515 d_vertex_f = (PetscScalar *)a_xarray; 516 } 517 PetscCall(PetscLogEventEnd(events[1], 0, 0, 0, 0)); 518 PetscCall(PetscLogEventBegin(events[8], 0, 0, 0, 0)); 519 PetscCall(PetscLogGpuTimeBegin()); 520 521 const int scr_bytes_fdf = real2_scr_t::shmem_size(Nf_max, Nb); 522 PetscCall(PetscInfo(plex[0], "df & f shared memory size: %d bytes in level, %d num cells total=%d, team size=%d, vector size=%d, #face=%d, Nf_max=%d\n", scr_bytes_fdf, KOKKOS_SHARED_LEVEL, (int)(num_cells_batch * batch_sz), team_size, vector_size, nfaces, (int)Nf_max)); 523 Kokkos::parallel_for( 524 "f, df", Kokkos::TeamPolicy<>(num_cells_batch * batch_sz, team_size, /* Kokkos::AUTO */ vector_size).set_scratch_size(KOKKOS_SHARED_LEVEL, Kokkos::PerTeam(scr_bytes_fdf)), KOKKOS_LAMBDA(const team_member team) { 525 const PetscInt b_Nelem = d_elem_offset[num_grids], b_elem_idx = team.league_rank() % b_Nelem, b_id = team.league_rank() / b_Nelem, IPf_sz_glb = d_ipf_offset[num_grids]; 526 // find my grid 527 PetscInt grid = 0; 528 while (b_elem_idx >= d_elem_offset[grid + 1]) grid++; 529 { 530 const PetscInt loc_nip = d_numCells[grid] * Nq, loc_Nf = d_species_offset[grid + 1] - d_species_offset[grid], loc_elem = b_elem_idx - d_elem_offset[grid]; 531 const PetscInt moffset = LAND_MOFFSET(b_id, grid, batch_sz, num_grids, d_mat_offset); 532 { 533 real2_scr_t s_coef_k(team.team_scratch(KOKKOS_SHARED_LEVEL), Nf_max, Nb); 534 PetscScalar *coef; 535 const PetscReal *invJe = &d_invJ_k((d_ip_offset[grid] + loc_elem * Nq) * dim * dim); 536 // un pack IPData 537 if (!maps[grid]) { 538 coef = &d_vertex_f[b_id * IPf_sz_glb + d_ipf_offset[grid] + loc_elem * Nb * loc_Nf]; // closure and IP indexing are the same 539 } else { 540 coef = s_coef_k.data(); 541 Kokkos::parallel_for(Kokkos::TeamThreadRange(team, 0, (int)loc_Nf), [=](int f) { 542 //for (int f = 0; f < loc_Nf; ++f) { 543 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team, 0, (int)Nb), [=](int b) { 544 //for (int b = 0; b < Nb; ++b) { 545 LandauIdx idx = maps[grid]->gIdx[loc_elem][f][b]; 546 if (idx >= 0) { 547 coef[f * Nb + b] = d_vertex_f[idx + moffset]; // xarray data, not IP, need raw array to deal with CPU assemble case (not used) 548 } else { 549 idx = -idx - 1; 550 coef[f * Nb + b] = 0; 551 for (int q = 0; q < maps[grid]->num_face; q++) { 552 PetscInt id = maps[grid]->c_maps[idx][q].gid; 553 PetscScalar scale = maps[grid]->c_maps[idx][q].scale; 554 if (id >= 0) coef[f * Nb + b] += scale * d_vertex_f[id + moffset]; 555 } 556 } 557 }); 558 }); 559 } 560 team.team_barrier(); 561 Kokkos::parallel_for(Kokkos::TeamThreadRange(team, 0, Nq), [=](int myQi) { 562 const PetscReal *const invJ = &invJe[myQi * dim * dim]; // b_elem_idx: batch element index 563 const PetscReal *Bq = &d_BB[myQi * Nb], *Dq = &d_DD[myQi * Nb * dim]; 564 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team, 0, (int)loc_Nf), [=](int f) { 565 PetscInt b, e, d; 566 PetscReal refSpaceDer[LANDAU_DIM]; 567 const PetscInt idx = d_ipf_offset[grid] + f * loc_nip + loc_elem * Nq + myQi; 568 d_fdf_k(b_id, 0, idx) = 0.0; 569 for (d = 0; d < LANDAU_DIM; ++d) refSpaceDer[d] = 0.0; 570 for (b = 0; b < Nb; ++b) { 571 d_fdf_k(b_id, 0, idx) += Bq[b] * PetscRealPart(coef[f * Nb + b]); 572 for (d = 0; d < dim; ++d) refSpaceDer[d] += Dq[b * dim + d] * PetscRealPart(coef[f * Nb + b]); 573 } 574 for (d = 0; d < dim; ++d) { 575 for (e = 0, d_fdf_k(b_id, d + 1, idx) = 0.0; e < dim; ++e) d_fdf_k(b_id, d + 1, idx) += invJ[e * dim + d] * refSpaceDer[e]; 576 } 577 }); // f 578 }); // myQi 579 } 580 team.team_barrier(); 581 } // 'grid' scope 582 }); // global elems - fdf 583 Kokkos::fence(); 584 PetscCall(PetscLogGpuTimeEnd()); 585 PetscCall(PetscLogEventEnd(events[8], 0, 0, 0, 0)); 586 // Jacobian 587 size_t maximum_shared_mem_size = 64000; 588 PetscDevice device; 589 590 PetscCall(PetscDeviceGetDefault_Internal(&device)); 591 PetscCall(PetscDeviceGetAttribute(device, PETSC_DEVICE_ATTR_SIZE_T_SHARED_MEM_PER_BLOCK, &maximum_shared_mem_size)); 592 size_t jac_scr_bytes = (size_t)2 * (g2_scr_t::shmem_size(dim, Nf_max, Nq) + g3_scr_t::shmem_size(dim, dim, Nf_max, Nq)); 593 const int jac_shared_level = (jac_scr_bytes > maximum_shared_mem_size) ? 1 : KOKKOS_SHARED_LEVEL; 594 // device function/lambda 595 auto jac_lambda = KOKKOS_LAMBDA(const team_member team) 596 { 597 const PetscInt b_Nelem = d_elem_offset[num_grids], b_elem_idx = team.league_rank() % b_Nelem, b_id = team.league_rank() / b_Nelem; 598 // find my grid 599 PetscInt grid = 0; 600 while (b_elem_idx >= d_elem_offset[grid + 1]) grid++; 601 { 602 const PetscInt loc_Nf = d_species_offset[grid + 1] - d_species_offset[grid], loc_elem = b_elem_idx - d_elem_offset[grid]; 603 const PetscInt moffset = LAND_MOFFSET(b_id, grid, batch_sz, num_grids, d_mat_offset); 604 const PetscInt f_off = d_species_offset[grid]; 605 #ifdef LAND_SUPPORT_CPU_ASS 606 const PetscInt totDim = loc_Nf * Nb; 607 #endif 608 g2_scr_t g2(team.team_scratch(jac_shared_level), dim, loc_Nf, Nq); 609 g3_scr_t g3(team.team_scratch(jac_shared_level), dim, dim, loc_Nf, Nq); 610 g2_scr_t gg2(team.team_scratch(jac_shared_level), dim, loc_Nf, Nq); 611 g3_scr_t gg3(team.team_scratch(jac_shared_level), dim, dim, loc_Nf, Nq); 612 // get g2[] & g3[] 613 Kokkos::parallel_for(Kokkos::TeamThreadRange(team, 0, Nq), [=](int myQi) { 614 using Kokkos::parallel_reduce; 615 const PetscInt jpidx_glb = d_ip_offset[grid] + loc_elem * Nq + myQi; 616 const PetscReal *invJ = &d_invJ_k(jpidx_glb * dim * dim); 617 const PetscReal vj[3] = {d_x[jpidx_glb], d_y[jpidx_glb], d_z ? d_z[jpidx_glb] : 0}, wj = d_w[jpidx_glb]; 618 landau_inner_red::TensorValueType gg_temp; // reduce on part of gg2 and g33 for IP jpidx_g 619 Kokkos::parallel_reduce( 620 Kokkos::ThreadVectorRange(team, (int)d_ip_offset[num_grids]), 621 [=](const int &ipidx, landau_inner_red::TensorValueType &ggg) { 622 const PetscReal wi = d_w[ipidx], x = d_x[ipidx], y = d_y[ipidx]; 623 PetscReal temp1[3] = {0, 0, 0}, temp2 = 0; 624 PetscInt fieldB, d2, d3, f_off_r, grid_r, ipidx_g, nip_loc_r, loc_Nf_r; 625 #if LANDAU_DIM == 2 626 PetscReal Ud[2][2], Uk[2][2], mask = (PetscAbs(vj[0] - x) < 100 * PETSC_SQRT_MACHINE_EPSILON && PetscAbs(vj[1] - y) < 100 * PETSC_SQRT_MACHINE_EPSILON) ? 0. : 1.; 627 LandauTensor2D(vj, x, y, Ud, Uk, mask); 628 #else 629 PetscReal U[3][3], z = d_z[ipidx], mask = (PetscAbs(vj[0]-x) < 100*PETSC_SQRT_MACHINE_EPSILON && PetscAbs(vj[1]-y) < 100*PETSC_SQRT_MACHINE_EPSILON && PetscAbs(vj[2]-z) < 100*PETSC_SQRT_MACHINE_EPSILON) ? 0. : 1.; 630 LandauTensor3D(vj, x, y, z, U, mask); 631 #endif 632 grid_r = 0; 633 while (ipidx >= d_ip_offset[grid_r + 1]) grid_r++; // yuck search for grid 634 f_off_r = d_species_offset[grid_r]; 635 ipidx_g = ipidx - d_ip_offset[grid_r]; 636 nip_loc_r = d_numCells[grid_r] * Nq; 637 loc_Nf_r = d_species_offset[grid_r + 1] - d_species_offset[grid_r]; 638 for (fieldB = 0; fieldB < loc_Nf_r; ++fieldB) { // fieldB is \beta d_lambdas[grid][grid_r] 639 const PetscInt idx = d_ipf_offset[grid_r] + fieldB * nip_loc_r + ipidx_g; 640 const PetscReal ff1 = d_beta[fieldB + f_off_r] * d_lambdas[LANDAU_MAX_GRIDS * grid + grid_r], ff2 = d_invMass[fieldB + f_off_r] * ff1; 641 temp1[0] += d_fdf_k(b_id, 1, idx) * ff2; 642 temp1[1] += d_fdf_k(b_id, 2, idx) * ff2; 643 #if LANDAU_DIM == 3 644 temp1[2] += d_fdf_k(b_id, 3, idx) * ff2; 645 #endif 646 temp2 += d_fdf_k(b_id, 0, idx) * ff1; 647 } 648 temp1[0] *= wi; 649 temp1[1] *= wi; 650 #if LANDAU_DIM == 3 651 temp1[2] *= wi; 652 #endif 653 temp2 *= wi; 654 #if LANDAU_DIM == 2 655 for (d2 = 0; d2 < 2; d2++) { 656 for (d3 = 0; d3 < 2; ++d3) { 657 /* K = U * grad(f): g2=e: i,A */ 658 ggg.gg2[d2] += Uk[d2][d3] * temp1[d3]; 659 /* D = -U * (I \kron (fx)): g3=f: i,j,A */ 660 ggg.gg3[d2][d3] += Ud[d2][d3] * temp2; 661 } 662 } 663 #else 664 for (d2 = 0; d2 < 3; ++d2) { 665 for (d3 = 0; d3 < 3; ++d3) { 666 /* K = U * grad(f): g2 = e: i,A */ 667 ggg.gg2[d2] += U[d2][d3]*temp1[d3]; 668 /* D = -U * (I \kron (fx)): g3 = f: i,j,A */ 669 ggg.gg3[d2][d3] += U[d2][d3]*temp2; 670 } 671 } 672 #endif 673 }, 674 Kokkos::Sum<landau_inner_red::TensorValueType>(gg_temp)); 675 // add alpha and put in gg2/3 676 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team, (int)loc_Nf), [&](const int &fieldA) { // \alpha 677 PetscInt d2, d3; 678 for (d2 = 0; d2 < dim; d2++) { 679 gg2(d2, fieldA, myQi) = gg_temp.gg2[d2] * d_alpha[fieldA + f_off]; 680 for (d3 = 0; d3 < dim; d3++) gg3(d2, d3, fieldA, myQi) = -gg_temp.gg3[d2][d3] * d_alpha[fieldA + f_off] * d_invMass[fieldA + f_off]; 681 } 682 }); 683 /* add electric field term once per IP */ 684 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team, (int)loc_Nf), [&](const int &fieldA) { gg2(dim - 1, fieldA, myQi) += d_Eq_m[fieldA + f_off]; }); 685 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team, (int)loc_Nf), [=](const int &fieldA) { 686 int d, d2, d3, dp; 687 /* Jacobian transform - g2, g3 - per thread (2D) */ 688 for (d = 0; d < dim; ++d) { 689 g2(d, fieldA, myQi) = 0; 690 for (d2 = 0; d2 < dim; ++d2) { 691 g2(d, fieldA, myQi) += invJ[d * dim + d2] * gg2(d2, fieldA, myQi); 692 g3(d, d2, fieldA, myQi) = 0; 693 for (d3 = 0; d3 < dim; ++d3) { 694 for (dp = 0; dp < dim; ++dp) g3(d, d2, fieldA, myQi) += invJ[d * dim + d3] * gg3(d3, dp, fieldA, myQi) * invJ[d2 * dim + dp]; 695 } 696 g3(d, d2, fieldA, myQi) *= wj; 697 } 698 g2(d, fieldA, myQi) *= wj; 699 } 700 }); 701 }); // Nq 702 team.team_barrier(); 703 { /* assemble */ 704 for (PetscInt fieldA = 0; fieldA < loc_Nf; fieldA++) { 705 /* assemble */ 706 Kokkos::parallel_for(Kokkos::TeamThreadRange(team, 0, Nb), [=](int f) { 707 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team, 0, Nb), [=](int g) { 708 PetscScalar t = 0; 709 for (int qj = 0; qj < Nq; qj++) { // look at others integration points 710 const PetscReal *BJq = &d_BB[qj * Nb], *DIq = &d_DD[qj * Nb * dim]; 711 for (int d = 0; d < dim; ++d) { 712 t += DIq[f * dim + d] * g2(d, fieldA, qj) * BJq[g]; 713 for (int d2 = 0; d2 < dim; ++d2) t += DIq[f * dim + d] * g3(d, d2, fieldA, qj) * DIq[g * dim + d2]; 714 } 715 } 716 if (elem_mat_num_cells_max_grid) { // CPU assembly 717 #ifdef LAND_SUPPORT_CPU_ASS 718 const PetscInt fOff = (fieldA * Nb + f) * totDim + fieldA * Nb + g; 719 d_elem_mats(b_id, grid, loc_elem, fOff) = t; 720 #endif 721 } else { 722 static_cast<void>(landau_mat_assemble(d_coo_vals, t, f, g, Nb, moffset, loc_elem, fieldA, maps[grid], d_coo_elem_offsets, d_coo_elem_fullNb, d_coo_elem_point_offsets, b_elem_idx, b_id * coo_sz_batch)); 723 } 724 }); 725 }); 726 } 727 } 728 } // scope with 'grid' 729 }; 730 #if defined(PETSC_HAVE_HIP) 731 const int lbound2 = 1; 732 #else 733 const int lbound2 = 2; 734 #endif 735 PetscCall(PetscLogEventBegin(events[4], 0, 0, 0, 0)); 736 PetscCall(PetscLogGpuTimeBegin()); 737 PetscCall(PetscInfo(plex[0], "Jacobian shared memory size: %zu bytes in level %s (max shared=%zu), num cells total=%d, team size=%d, vector size=%d, #face=%d, Nf_max=%d\n", jac_scr_bytes, jac_shared_level == 0 ? "local" : "global", maximum_shared_mem_size, (int)(num_cells_batch * batch_sz), team_size, vector_size, nfaces, (int)Nf_max)); 738 Kokkos::parallel_for("Jacobian", Kokkos::TeamPolicy<Kokkos::LaunchBounds<256, lbound2>>(num_cells_batch * batch_sz, team_size, vector_size).set_scratch_size(jac_shared_level, Kokkos::PerTeam(jac_scr_bytes)), jac_lambda); // Kokkos::LaunchBounds<512,2> 739 Kokkos::fence(); 740 PetscCall(PetscLogGpuTimeEnd()); 741 PetscCall(PetscLogEventEnd(events[4], 0, 0, 0, 0)); 742 if (d_vertex_f_k) delete d_vertex_f_k; 743 } else { // mass 744 PetscCall(PetscLogEventBegin(events[16], 0, 0, 0, 0)); 745 PetscCall(PetscLogGpuTimeBegin()); 746 PetscCall(PetscInfo(plex[0], "Mass team size=%d vector size=%d #face=%d Nb=%" PetscInt_FMT ", %s assembly\n", team_size, vector_size, nfaces, Nb, d_coo_vals ? "COO" : "CSR")); 747 Kokkos::parallel_for( 748 "Mass", Kokkos::TeamPolicy<>(num_cells_batch * batch_sz, team_size, vector_size), KOKKOS_LAMBDA(const team_member team) { // Kokkos::LaunchBounds<512,4> 749 const PetscInt b_Nelem = d_elem_offset[num_grids], b_elem_idx = team.league_rank() % b_Nelem, b_id = team.league_rank() / b_Nelem; 750 // find my grid 751 PetscInt grid = 0; 752 while (b_elem_idx >= d_elem_offset[grid + 1]) grid++; 753 { 754 const PetscInt loc_Nf = d_species_offset[grid + 1] - d_species_offset[grid], loc_elem = b_elem_idx - d_elem_offset[grid], jpidx_0 = d_ip_offset[grid] + loc_elem * Nq; 755 #ifdef LAND_SUPPORT_CPU_ASS 756 const PetscInt totDim = loc_Nf * Nb; 757 #endif 758 const PetscInt moffset = LAND_MOFFSET(b_id, grid, batch_sz, num_grids, d_mat_offset); 759 for (int fieldA = 0; fieldA < loc_Nf; fieldA++) { 760 /* assemble */ 761 Kokkos::parallel_for(Kokkos::TeamThreadRange(team, 0, Nb), [=](int f) { 762 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team, 0, Nb), [=](int g) { 763 PetscScalar t = 0; 764 for (int qj = 0; qj < Nq; qj++) { // look at others integration points 765 const PetscReal *BJq = &d_BB[qj * Nb]; 766 const PetscInt jpidx_glb = jpidx_0 + qj; 767 if (dim == 2) { 768 t += BJq[f] * d_w_k(jpidx_glb) * shift * BJq[g] * 2. * PETSC_PI; 769 } else { 770 t += BJq[f] * d_w_k(jpidx_glb) * shift * BJq[g]; 771 } 772 } 773 if (elem_mat_num_cells_max_grid) { 774 #ifdef LAND_SUPPORT_CPU_ASS 775 const PetscInt fOff = (fieldA * Nb + f) * totDim + fieldA * Nb + g; 776 d_elem_mats(b_id, grid, loc_elem, fOff) = t; 777 #endif 778 } else { 779 static_cast<void>(landau_mat_assemble(d_coo_vals, t, f, g, Nb, moffset, loc_elem, fieldA, maps[grid], d_coo_elem_offsets, d_coo_elem_fullNb, d_coo_elem_point_offsets, b_elem_idx, b_id * coo_sz_batch)); 780 } 781 }); 782 }); 783 } // field 784 } // grid 785 }); 786 Kokkos::fence(); 787 PetscCall(PetscLogGpuTimeEnd()); 788 PetscCall(PetscLogEventEnd(events[16], 0, 0, 0, 0)); 789 } 790 if (d_coo_vals) { 791 PetscCall(MatSetValuesCOO(JacP, d_coo_vals, ADD_VALUES)); 792 #ifndef LAND_SUPPORT_CPU_ASS 793 Kokkos::fence(); // for timers 794 #endif 795 } else if (elem_mat_num_cells_max_grid) { // CPU assembly 796 #ifdef LAND_SUPPORT_CPU_ASS 797 Kokkos::View<PetscScalar ****, Kokkos::LayoutRight>::HostMirror h_elem_mats = Kokkos::create_mirror_view(d_elem_mats); 798 Kokkos::deep_copy(h_elem_mats, d_elem_mats); 799 PetscCheck(!container, PETSC_COMM_SELF, PETSC_ERR_PLIB, "?????"); 800 for (PetscInt b_id = 0; b_id < batch_sz; b_id++) { // OpenMP (once) 801 for (PetscInt grid = 0; grid < num_grids; grid++) { 802 PetscSection section, globalSection; 803 PetscInt cStart, cEnd; 804 Mat B = subJ[LAND_PACK_IDX(b_id, grid)]; 805 PetscInt moffset = LAND_MOFFSET(b_id, grid, batch_sz, num_grids, a_mat_offset), nloc, nzl, colbuf[1024], row; 806 const PetscInt *cols; 807 const PetscScalar *vals; 808 PetscCall(PetscLogEventBegin(events[5], 0, 0, 0, 0)); 809 PetscCall(DMPlexGetHeightStratum(plex[grid], 0, &cStart, &cEnd)); 810 PetscCall(DMGetLocalSection(plex[grid], §ion)); 811 PetscCall(DMGetGlobalSection(plex[grid], &globalSection)); 812 PetscCall(PetscLogEventEnd(events[5], 0, 0, 0, 0)); 813 PetscCall(PetscLogEventBegin(events[6], 0, 0, 0, 0)); 814 for (PetscInt ej = cStart; ej < cEnd; ++ej) { 815 const PetscScalar *elMat = &h_elem_mats(b_id, grid, ej - cStart, 0); 816 PetscCall(DMPlexMatSetClosure(plex[grid], section, globalSection, B, ej, elMat, ADD_VALUES)); 817 if (grid == 0 && ej == -1) { 818 const PetscInt loc_Nf = a_species_offset[grid + 1] - a_species_offset[grid], totDim = loc_Nf * Nb; 819 int d, f; 820 PetscPrintf(PETSC_COMM_SELF, "Kokkos Element matrix %d/%d\n", 1, (int)a_numCells[grid]); 821 for (d = 0; d < totDim; ++d) { 822 for (f = 0; f < totDim; ++f) PetscPrintf(PETSC_COMM_SELF, " %12.5e", PetscRealPart(elMat[d * totDim + f])); 823 PetscPrintf(PETSC_COMM_SELF, "\n"); 824 } 825 exit(14); 826 } 827 } 828 // move nest matrix to global JacP 829 PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY)); 830 PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY)); 831 PetscCall(MatGetSize(B, &nloc, NULL)); 832 for (int i = 0; i < nloc; i++) { 833 PetscCall(MatGetRow(B, i, &nzl, &cols, &vals)); 834 PetscCheck(nzl <= 1024, PetscObjectComm((PetscObject)B), PETSC_ERR_PLIB, "Row too big: %" PetscInt_FMT, nzl); 835 for (int j = 0; j < nzl; j++) colbuf[j] = cols[j] + moffset; 836 row = i + moffset; 837 PetscCall(MatSetValues(JacP, 1, &row, nzl, colbuf, vals, ADD_VALUES)); 838 PetscCall(MatRestoreRow(B, i, &nzl, &cols, &vals)); 839 } 840 PetscCall(MatDestroy(&subJ[LAND_PACK_IDX(b_id, grid)])); 841 PetscCall(PetscLogEventEnd(events[6], 0, 0, 0, 0)); 842 } // grids 843 } 844 #else 845 SETERRQ(PETSC_COMM_SELF, PETSC_ERR_PLIB, "CPU assembly not supported"); 846 #endif 847 } 848 PetscFunctionReturn(PETSC_SUCCESS); 849 } 850 } // extern "C" 851 #endif 852