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