1 /* 2 Implements the Kokkos kernel 3 */ 4 #include <petscconf.h> 5 #include <petscvec_kokkos.hpp> 6 #include <petsc/private/dmpleximpl.h> /*I "petscdmplex.h" I*/ 7 #include <petsclandau.h> 8 #include <petscts.h> 9 10 #include <Kokkos_Core.hpp> 11 #include <cstdio> 12 typedef Kokkos::TeamPolicy<>::member_type team_member; 13 #include "../land_tensors.h" 14 #include <petscaijdevice.h> 15 16 namespace landau_inner_red { // namespace helps with name resolution in reduction identity 17 template< class ScalarType > 18 struct array_type { 19 ScalarType gg2[LANDAU_DIM]; 20 ScalarType gg3[LANDAU_DIM][LANDAU_DIM]; 21 22 KOKKOS_INLINE_FUNCTION // Default constructor - Initialize to 0's 23 array_type() { 24 for (int j = 0; j < LANDAU_DIM; j++) { 25 gg2[j] = 0; 26 for (int k = 0; k < LANDAU_DIM; k++) { 27 gg3[j][k] = 0; 28 } 29 } 30 } 31 KOKKOS_INLINE_FUNCTION // Copy Constructor 32 array_type(const array_type & rhs) { 33 for (int j = 0; j < LANDAU_DIM; j++) { 34 gg2[j] = rhs.gg2[j]; 35 for (int k = 0; k < LANDAU_DIM; k++) { 36 gg3[j][k] = rhs.gg3[j][k]; 37 } 38 } 39 } 40 KOKKOS_INLINE_FUNCTION // add operator 41 array_type& operator += (const array_type& src) 42 { 43 for (int j = 0; j < LANDAU_DIM; j++) { 44 gg2[j] += src.gg2[j]; 45 for (int k = 0; k < LANDAU_DIM; k++) { 46 gg3[j][k] += src.gg3[j][k]; 47 } 48 } 49 return *this; 50 } 51 KOKKOS_INLINE_FUNCTION // volatile add operator 52 void operator += (const volatile array_type& src) volatile 53 { 54 for (int j = 0; j < LANDAU_DIM; j++) { 55 gg2[j] += src.gg2[j]; 56 for (int k = 0; k < LANDAU_DIM; k++) { 57 gg3[j][k] += src.gg3[j][k]; 58 } 59 } 60 } 61 }; 62 typedef array_type<PetscReal> TensorValueType; // used to simplify code below 63 } 64 65 namespace Kokkos { //reduction identity must be defined in Kokkos namespace 66 template<> 67 struct reduction_identity< landau_inner_red::TensorValueType > { 68 KOKKOS_FORCEINLINE_FUNCTION static landau_inner_red::TensorValueType sum() { 69 return landau_inner_red::TensorValueType(); 70 } 71 }; 72 } 73 74 extern "C" { 75 PetscErrorCode LandauKokkosCreateMatMaps(P4estVertexMaps maps[], pointInterpolationP4est (*pointMaps)[LANDAU_MAX_Q_FACE], PetscInt Nf[], PetscInt Nq, PetscInt grid) 76 { 77 P4estVertexMaps h_maps; /* host container */ 78 const Kokkos::View<pointInterpolationP4est*[LANDAU_MAX_Q_FACE], Kokkos::LayoutRight, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_points ((pointInterpolationP4est*)pointMaps, maps[grid].num_reduced); 79 const Kokkos::View< LandauIdx*[LANDAU_MAX_SPECIES][LANDAU_MAX_NQ], Kokkos::LayoutRight, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_gidx ((LandauIdx*)maps[grid].gIdx, maps[grid].num_elements); 80 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); 81 Kokkos::View<LandauIdx*[LANDAU_MAX_SPECIES][LANDAU_MAX_NQ], Kokkos::LayoutRight> *d_gidx = new Kokkos::View<LandauIdx*[LANDAU_MAX_SPECIES][LANDAU_MAX_NQ], Kokkos::LayoutRight>("gIdx", maps[grid].num_elements); 82 83 PetscFunctionBegin; 84 Kokkos::deep_copy (*d_gidx, h_gidx); 85 Kokkos::deep_copy (*d_points, h_points); 86 h_maps.num_elements = maps[grid].num_elements; 87 h_maps.num_face = maps[grid].num_face; 88 h_maps.num_reduced = maps[grid].num_reduced; 89 h_maps.deviceType = maps[grid].deviceType; 90 h_maps.numgrids = maps[grid].numgrids; 91 h_maps.Nf = Nf[grid]; 92 h_maps.c_maps = (pointInterpolationP4est (*)[LANDAU_MAX_Q_FACE]) d_points->data(); 93 maps[grid].vp1 = (void*)d_points; 94 h_maps.gIdx = (LandauIdx (*)[LANDAU_MAX_SPECIES][LANDAU_MAX_NQ]) d_gidx->data(); 95 maps[grid].vp2 = (void*)d_gidx; 96 { 97 Kokkos::View<P4estVertexMaps, Kokkos::HostSpace> h_maps_k(&h_maps); 98 Kokkos::View<P4estVertexMaps> *d_maps_k = new Kokkos::View<P4estVertexMaps>(Kokkos::create_mirror(Kokkos::DefaultExecutionSpace::memory_space(),h_maps_k)); 99 Kokkos::deep_copy (*d_maps_k, h_maps_k); 100 maps[grid].d_self = d_maps_k->data(); 101 maps[grid].vp3 = (void*)d_maps_k; 102 } 103 PetscFunctionReturn(0); 104 } 105 PetscErrorCode LandauKokkosDestroyMatMaps(P4estVertexMaps maps[], PetscInt num_grids) 106 { 107 PetscFunctionBegin; 108 for (PetscInt grid=0;grid<num_grids;grid++) { 109 auto a = static_cast<Kokkos::View<pointInterpolationP4est*[LANDAU_MAX_Q_FACE], Kokkos::LayoutRight>*>(maps[grid].vp1); 110 auto b = static_cast<Kokkos::View<LandauIdx*[LANDAU_MAX_SPECIES][LANDAU_MAX_NQ], Kokkos::LayoutRight>*>(maps[grid].vp2); 111 auto c = static_cast<Kokkos::View<P4estVertexMaps*>*>(maps[grid].vp3); 112 delete a; delete b; delete c; 113 } 114 PetscFunctionReturn(0); 115 } 116 117 PetscErrorCode LandauKokkosStaticDataSet(DM plex, const PetscInt Nq, const PetscInt batch_sz, const PetscInt num_grids, 118 PetscInt a_numCells[], PetscInt a_species_offset[], PetscInt a_mat_offset[], 119 PetscReal a_nu_alpha[], PetscReal a_nu_beta[], PetscReal a_invMass[], PetscReal a_invJ[], 120 PetscReal a_x[], PetscReal a_y[], PetscReal a_z[], PetscReal a_w[], LandauStaticData *SData_d) 121 { 122 PetscReal *BB,*DD; 123 PetscTabulation *Tf; 124 PetscInt dim; 125 PetscInt Nb=Nq,ip_offset[LANDAU_MAX_GRIDS+1],ipf_offset[LANDAU_MAX_GRIDS+1],elem_offset[LANDAU_MAX_GRIDS+1],nip,IPf_sz,Nftot; 126 PetscDS prob; 127 128 PetscFunctionBegin; 129 PetscCall(DMGetDimension(plex, &dim)); 130 PetscCall(DMGetDS(plex, &prob)); 131 PetscCheck(LANDAU_DIM == dim,PETSC_COMM_WORLD, PETSC_ERR_PLIB, "dim %" PetscInt_FMT " != LANDAU_DIM %d",dim,LANDAU_DIM); 132 PetscCall(PetscDSGetTabulation(prob, &Tf)); 133 BB = Tf[0]->T[0]; DD = Tf[0]->T[1]; 134 ip_offset[0] = ipf_offset[0] = elem_offset[0] = 0; 135 nip = 0; 136 IPf_sz = 0; 137 for (PetscInt grid=0 ; grid<num_grids ; grid++) { 138 PetscInt nfloc = a_species_offset[grid+1] - a_species_offset[grid]; 139 elem_offset[grid+1] = elem_offset[grid] + a_numCells[grid]; 140 nip += a_numCells[grid]*Nq; 141 ip_offset[grid+1] = nip; 142 IPf_sz += Nq*nfloc*a_numCells[grid]; 143 ipf_offset[grid+1] = IPf_sz; 144 } 145 Nftot = a_species_offset[num_grids]; 146 PetscCall(PetscKokkosInitializeCheck()); 147 { 148 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_alpha (a_nu_alpha, Nftot); 149 auto alpha = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("alpha", Nftot); 150 SData_d->alpha = static_cast<void*>(alpha); 151 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_beta (a_nu_beta, Nftot); 152 auto beta = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("beta", Nftot); 153 SData_d->beta = static_cast<void*>(beta); 154 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_invMass (a_invMass,Nftot); 155 auto invMass = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("invMass", Nftot); 156 SData_d->invMass = static_cast<void*>(invMass); 157 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_BB (BB,Nq*Nb); 158 auto B = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("B", Nq*Nb); 159 SData_d->B = static_cast<void*>(B); 160 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_DD (DD,Nq*Nb*dim); 161 auto D = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("D", Nq*Nb*dim); 162 SData_d->D = static_cast<void*>(D); 163 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_invJ (a_invJ, nip*dim*dim); 164 auto invJ = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("invJ", nip*dim*dim); 165 SData_d->invJ = static_cast<void*>(invJ); 166 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_x (a_x, nip); 167 auto x = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("x", nip); 168 SData_d->x = static_cast<void*>(x); 169 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_y (a_y, nip); 170 auto y = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("y", nip); 171 SData_d->y = static_cast<void*>(y); 172 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_w (a_w, nip); 173 auto w = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("w", nip); 174 SData_d->w = static_cast<void*>(w); 175 176 Kokkos::deep_copy (*alpha, h_alpha); 177 Kokkos::deep_copy (*beta, h_beta); 178 Kokkos::deep_copy (*invMass, h_invMass); 179 Kokkos::deep_copy (*B, h_BB); 180 Kokkos::deep_copy (*D, h_DD); 181 Kokkos::deep_copy (*invJ, h_invJ); 182 Kokkos::deep_copy (*x, h_x); 183 Kokkos::deep_copy (*y, h_y); 184 Kokkos::deep_copy (*w, h_w); 185 186 if (dim==3) { 187 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_z (a_z , nip); 188 auto z = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("z", nip); 189 SData_d->z = static_cast<void*>(z); 190 Kokkos::deep_copy (*z, h_z); 191 } else SData_d->z = NULL; 192 193 // 194 const Kokkos::View<PetscInt*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_NCells (a_numCells, num_grids); 195 auto nc = new Kokkos::View<PetscInt*, Kokkos::LayoutLeft> ("NCells",num_grids); 196 SData_d->NCells = static_cast<void*>(nc); 197 Kokkos::deep_copy (*nc, h_NCells); 198 199 const Kokkos::View<PetscInt*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_species_offset (a_species_offset, num_grids+1); 200 auto soff = new Kokkos::View<PetscInt*, Kokkos::LayoutLeft> ("species_offset",num_grids+1); 201 SData_d->species_offset = static_cast<void*>(soff); 202 Kokkos::deep_copy (*soff, h_species_offset); 203 204 const Kokkos::View<PetscInt*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_mat_offset (a_mat_offset, num_grids+1); 205 auto moff = new Kokkos::View<PetscInt*, Kokkos::LayoutLeft> ("mat_offset",num_grids+1); 206 SData_d->mat_offset = static_cast<void*>(moff); 207 Kokkos::deep_copy (*moff, h_mat_offset); 208 209 const Kokkos::View<PetscInt*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_ip_offset (ip_offset, num_grids+1); 210 auto ipoff = new Kokkos::View<PetscInt*, Kokkos::LayoutLeft> ("ip_offset",num_grids+1); 211 SData_d->ip_offset = static_cast<void*>(ipoff); 212 Kokkos::deep_copy (*ipoff, h_ip_offset); 213 214 const Kokkos::View<PetscInt*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_elem_offset (elem_offset, num_grids+1); 215 auto eoff = new Kokkos::View<PetscInt*, Kokkos::LayoutLeft> ("elem_offset",num_grids+1); 216 SData_d->elem_offset = static_cast<void*>(eoff); 217 Kokkos::deep_copy (*eoff, h_elem_offset); 218 219 const Kokkos::View<PetscInt*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_ipf_offset (ipf_offset, num_grids+1); 220 auto ipfoff = new Kokkos::View<PetscInt*, Kokkos::LayoutLeft> ("ipf_offset",num_grids+1); 221 SData_d->ipf_offset = static_cast<void*>(ipfoff); 222 Kokkos::deep_copy (*ipfoff, h_ipf_offset); 223 #if defined(LANDAU_LAYOUT_LEFT) // preallocate dynamic data, no copy 224 auto ipfdf_data = new Kokkos::View<PetscReal***, Kokkos::LayoutLeft > ("fdf", batch_sz, dim+1, IPf_sz); 225 #else 226 auto ipfdf_data = new Kokkos::View<PetscReal***, Kokkos::LayoutRight > ("fdf",batch_sz, dim+1, IPf_sz); 227 #endif 228 SData_d->ipfdf_data = static_cast<void*>(ipfdf_data); 229 auto Eq_m = new Kokkos::View<PetscReal*, Kokkos::LayoutLeft> ("Eq_m",Nftot); // allocate but do not set, same for whole batch 230 SData_d->Eq_m = static_cast<void*>(Eq_m); 231 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); 232 auto coo_elem_offsets = new Kokkos::View<LandauIdx*, Kokkos::LayoutLeft> ("coo_elem_offsets",SData_d->coo_n_cellsTot+1); 233 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); 234 auto coo_elem_fullNb = new Kokkos::View<LandauIdx*, Kokkos::LayoutLeft> ("coo_elem_offsets",SData_d->coo_n_cellsTot); 235 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_NQ+1)); 236 auto coo_elem_point_offsets = new Kokkos::View<LandauIdx*, Kokkos::LayoutLeft> ("coo_elem_point_offsets",SData_d->coo_n_cellsTot*(LANDAU_MAX_NQ+1)); 237 // assign & copy 238 Kokkos::deep_copy (*coo_elem_offsets, h_coo_elem_offsets); 239 Kokkos::deep_copy (*coo_elem_fullNb, h_coo_elem_fullNb); 240 Kokkos::deep_copy (*coo_elem_point_offsets, h_coo_elem_point_offsets); 241 // need to free this now and use pointer space 242 PetscCall(PetscFree3(SData_d->coo_elem_offsets,SData_d->coo_elem_fullNb,SData_d->coo_elem_point_offsets)); 243 SData_d->coo_elem_offsets = static_cast<void*>(coo_elem_offsets); 244 SData_d->coo_elem_fullNb = static_cast<void*>(coo_elem_fullNb); 245 SData_d->coo_elem_point_offsets = static_cast<void*>(coo_elem_point_offsets); 246 auto coo_vals = new Kokkos::View<PetscScalar*, Kokkos::LayoutRight, Kokkos::DefaultExecutionSpace> ("coo_vals", SData_d->coo_size); 247 SData_d->coo_vals = static_cast<void*>(coo_vals); 248 } 249 SData_d->maps = NULL; // not used 250 PetscFunctionReturn(0); 251 } 252 253 PetscErrorCode LandauKokkosStaticDataClear(LandauStaticData *SData_d) 254 { 255 PetscFunctionBegin; 256 if (SData_d->alpha) { 257 auto alpha = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->alpha); 258 delete alpha; 259 SData_d->alpha = NULL; 260 auto beta = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->beta); 261 delete beta; 262 auto invMass = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->invMass); 263 delete invMass; 264 auto B = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->B); 265 delete B; 266 auto D = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->D); 267 delete D; 268 auto invJ = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->invJ); 269 delete invJ; 270 auto x = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->x); 271 delete x; 272 auto y = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->y); 273 delete y; 274 if (SData_d->z) { 275 auto z = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->z); 276 delete z; 277 } 278 #if defined(LANDAU_LAYOUT_LEFT) // preallocate dynamic data, no copy 279 auto z = static_cast<Kokkos::View<PetscReal***, Kokkos::LayoutLeft>*>(SData_d->ipfdf_data); 280 #else 281 auto z = static_cast<Kokkos::View<PetscReal***, Kokkos::LayoutRight>*>(SData_d->ipfdf_data); 282 #endif 283 delete z; 284 auto w = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->w); 285 delete w; 286 auto Eq_m = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->Eq_m); 287 delete Eq_m; 288 // offset 289 auto nc = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->NCells); 290 delete nc; 291 auto soff = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->species_offset); 292 delete soff; 293 auto moff = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->mat_offset); 294 delete moff; 295 auto ipoff = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->ip_offset); 296 delete ipoff; 297 auto eoff = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->elem_offset); 298 delete eoff; 299 auto ipfoff = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->ipf_offset); 300 delete ipfoff; 301 auto coo_elem_offsets = static_cast<Kokkos::View<LandauIdx*, Kokkos::LayoutLeft>*>((void*)SData_d->coo_elem_offsets); 302 delete coo_elem_offsets; 303 auto coo_elem_fullNb = static_cast<Kokkos::View<LandauIdx*, Kokkos::LayoutLeft>*>((void*)SData_d->coo_elem_fullNb); 304 delete coo_elem_fullNb; 305 auto coo_elem_point_offsets = static_cast<Kokkos::View<LandauIdx*, Kokkos::LayoutLeft>*>((void*)SData_d->coo_elem_point_offsets); 306 delete coo_elem_point_offsets; 307 SData_d->coo_elem_offsets = NULL; 308 SData_d->coo_elem_point_offsets = NULL; 309 SData_d->coo_elem_fullNb = NULL; 310 auto coo_vals = static_cast<Kokkos::View<PetscScalar*, Kokkos::LayoutRight, Kokkos::DefaultExecutionSpace>*>((void*)SData_d->coo_vals); 311 delete coo_vals; 312 } 313 PetscFunctionReturn(0); 314 } 315 316 #define KOKKOS_SHARED_LEVEL 0 // 0 is shared, 1 is global 317 318 KOKKOS_INLINE_FUNCTION 319 PetscErrorCode landau_mat_assemble(PetscSplitCSRDataStructure d_mat, PetscScalar *coo_vals, const PetscScalar Aij, const PetscInt f, const PetscInt g, const PetscInt Nb, 320 PetscInt moffset, const PetscInt elem, const PetscInt fieldA, const P4estVertexMaps *d_maps, 321 const LandauIdx coo_elem_offsets[], const LandauIdx coo_elem_fullNb[], const LandauIdx (*coo_elem_point_offsets)[LANDAU_MAX_NQ+1], 322 const PetscInt glb_elem_idx, const PetscInt bid_coo_sz_batch) 323 { 324 PetscInt idx,q,nr,nc,d; 325 const LandauIdx *const Idxs = &d_maps->gIdx[elem][fieldA][0]; 326 PetscScalar row_scale[LANDAU_MAX_Q_FACE]={0},col_scale[LANDAU_MAX_Q_FACE]={0}; 327 if (coo_vals) { // mirror (i,j) in CreateStaticGPUData 328 const int fullNb = coo_elem_fullNb[glb_elem_idx],fullNb2=fullNb*fullNb; 329 idx = Idxs[f]; 330 if (idx >= 0) { 331 nr = 1; 332 row_scale[0] = 1.; 333 } else { 334 idx = -idx - 1; 335 for (q = 0, nr = 0; q < d_maps->num_face; q++, nr++) { 336 if (d_maps->c_maps[idx][q].gid < 0) break; 337 row_scale[q] = d_maps->c_maps[idx][q].scale; 338 } 339 } 340 idx = Idxs[g]; 341 if (idx >= 0) { 342 nc = 1; 343 col_scale[0] = 1.; 344 } else { 345 idx = -idx - 1; 346 nc = d_maps->num_face; 347 for (q = 0, nc = 0; q < d_maps->num_face; q++, nc++) { 348 if (d_maps->c_maps[idx][q].gid < 0) break; 349 col_scale[q] = d_maps->c_maps[idx][q].scale; 350 } 351 } 352 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]; 353 for (int q = 0, idx2 = idx0; q < nr; q++) { 354 for (int d = 0; d < nc; d++, idx2++) { 355 coo_vals[idx2] = row_scale[q]*col_scale[d]*Aij; 356 } 357 } 358 } else { 359 PetscScalar vals[LANDAU_MAX_Q_FACE*LANDAU_MAX_Q_FACE]={0}; 360 PetscInt rows[LANDAU_MAX_Q_FACE],cols[LANDAU_MAX_Q_FACE]; 361 idx = Idxs[f]; 362 if (idx >= 0) { 363 nr = 1; 364 rows[0] = idx; 365 row_scale[0] = 1.; 366 } else { 367 idx = -idx - 1; 368 for (q = 0, nr = 0; q < d_maps->num_face; q++, nr++) { 369 if (d_maps->c_maps[idx][q].gid < 0) break; 370 rows[q] = d_maps->c_maps[idx][q].gid; 371 row_scale[q] = d_maps->c_maps[idx][q].scale; 372 } 373 } 374 idx = Idxs[g]; 375 if (idx >= 0) { 376 nc = 1; 377 cols[0] = idx; 378 col_scale[0] = 1.; 379 } else { 380 idx = -idx - 1; 381 for (q = 0, nc = 0; q < d_maps->num_face; q++, nc++) { 382 if (d_maps->c_maps[idx][q].gid < 0) break; 383 cols[q] = d_maps->c_maps[idx][q].gid; 384 col_scale[q] = d_maps->c_maps[idx][q].scale; 385 } 386 } 387 388 for (q = 0; q < nr; q++) rows[q] = rows[q] + moffset; 389 for (q = 0; q < nc; q++) cols[q] = cols[q] + moffset; 390 for (q = 0; q < nr; q++) { 391 for (d = 0; d < nc; d++) { 392 vals[q*nc + d] = row_scale[q]*col_scale[d]*Aij; 393 } 394 } 395 MatSetValuesDevice(d_mat,nr,rows,nc,cols,vals,ADD_VALUES); 396 } 397 return 0; 398 } 399 400 PetscErrorCode LandauKokkosJacobian(DM plex[], const PetscInt Nq, const PetscInt batch_sz, const PetscInt num_grids, const PetscInt a_numCells[], PetscReal a_Eq_m[], PetscScalar a_elem_closure[], 401 const PetscScalar a_xarray[], const LandauStaticData *SData_d, const PetscReal shift, 402 const PetscLogEvent events[], const PetscInt a_mat_offset[], const PetscInt a_species_offset[], Mat subJ[], Mat JacP) 403 { 404 using scr_mem_t = Kokkos::DefaultExecutionSpace::scratch_memory_space; 405 using real2_scr_t = Kokkos::View<PetscScalar**, Kokkos::LayoutRight, scr_mem_t>; 406 using g2_scr_t = Kokkos::View<PetscReal***, Kokkos::LayoutRight, scr_mem_t>; 407 using g3_scr_t = Kokkos::View<PetscReal****, Kokkos::LayoutRight, scr_mem_t>; 408 PetscInt Nb=Nq,dim,num_cells_max,Nf_max,num_cells_batch; 409 int nfaces=0,vector_size=512/Nq; 410 LandauCtx *ctx; 411 PetscReal *d_Eq_m=NULL; 412 PetscScalar *d_vertex_f=NULL; 413 P4estVertexMaps *maps[LANDAU_MAX_GRIDS]; // this gets captured 414 PetscSplitCSRDataStructure d_mat; 415 PetscContainer container; 416 const int conc = Kokkos::DefaultExecutionSpace().concurrency(), openmp = !!(conc < 1000), team_size = (openmp==0) ? Nq : 1; 417 const PetscInt coo_sz_batch = SData_d->coo_size/batch_sz; // capture 418 auto d_alpha_k = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->alpha); //static data 419 const PetscReal *d_alpha = d_alpha_k->data(); 420 const PetscInt Nftot = d_alpha_k->size(); // total number of species 421 auto d_beta_k = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->beta); 422 const PetscReal *d_beta = d_beta_k->data(); 423 auto d_invMass_k = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->invMass); 424 const PetscReal *d_invMass = d_invMass_k->data(); 425 auto d_B_k = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->B); 426 const PetscReal *d_BB = d_B_k->data(); 427 auto d_D_k = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->D); 428 const PetscReal *d_DD = d_D_k->data(); 429 auto d_invJ_k = *static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->invJ); // use Kokkos vector in kernels 430 auto d_x_k = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->x); //static data 431 const PetscReal *d_x = d_x_k->data(); 432 auto d_y_k = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->y); //static data 433 const PetscReal *d_y = d_y_k->data(); 434 auto d_z_k = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->z); //static data 435 const PetscReal *d_z = (LANDAU_DIM==3) ? d_z_k->data() : NULL; 436 auto d_w_k = *static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->w); //static data 437 const PetscReal *d_w = d_w_k.data(); 438 // grid offsets - single vertex grid data 439 auto d_numCells_k = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->NCells); 440 const PetscInt *d_numCells = d_numCells_k->data(); 441 auto d_species_offset_k = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->species_offset); 442 const PetscInt *d_species_offset = d_species_offset_k->data(); 443 auto d_mat_offset_k = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->mat_offset); 444 const PetscInt *d_mat_offset = d_mat_offset_k->data(); 445 auto d_ip_offset_k = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->ip_offset); 446 const PetscInt *d_ip_offset = d_ip_offset_k->data(); 447 auto d_ipf_offset_k = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->ipf_offset); 448 const PetscInt *d_ipf_offset = d_ipf_offset_k->data(); 449 auto d_elem_offset_k = static_cast<Kokkos::View<PetscInt*, Kokkos::LayoutLeft>*>(SData_d->elem_offset); 450 const PetscInt *d_elem_offset = d_elem_offset_k->data(); 451 #if defined(LANDAU_LAYOUT_LEFT) // preallocate dynamic data, including batched vertices 452 Kokkos::View<PetscReal***, Kokkos::LayoutLeft > d_fdf_k = *static_cast<Kokkos::View<PetscReal***, Kokkos::LayoutLeft >*>(SData_d->ipfdf_data); 453 #else 454 Kokkos::View<PetscReal***, Kokkos::LayoutRight > d_fdf_k = *static_cast<Kokkos::View<PetscReal***, Kokkos::LayoutRight >*>(SData_d->ipfdf_data); 455 #endif 456 auto d_Eq_m_k = static_cast<Kokkos::View<PetscReal*, Kokkos::LayoutLeft>*>(SData_d->Eq_m); // static storage, dynamci data - E(t), copy later, single vertex 457 // COO 458 auto d_coo_elem_offsets_k = static_cast<Kokkos::View<LandauIdx*, Kokkos::LayoutLeft>*>(SData_d->coo_elem_offsets); 459 LandauIdx *d_coo_elem_offsets = (SData_d->coo_size==0) ? NULL : d_coo_elem_offsets_k->data(); 460 auto d_coo_elem_fullNb_k = static_cast<Kokkos::View<LandauIdx*, Kokkos::LayoutLeft>*>(SData_d->coo_elem_fullNb); 461 LandauIdx *d_coo_elem_fullNb = (SData_d->coo_size==0) ? NULL : d_coo_elem_fullNb_k->data(); 462 auto d_coo_elem_point_offsets_k = static_cast<Kokkos::View<LandauIdx*, Kokkos::LayoutLeft>*>(SData_d->coo_elem_point_offsets); 463 LandauIdx (*d_coo_elem_point_offsets)[LANDAU_MAX_NQ+1] = (SData_d->coo_size==0) ? NULL : (LandauIdx (*)[LANDAU_MAX_NQ+1])d_coo_elem_point_offsets_k->data(); 464 auto d_coo_vals_k = static_cast<Kokkos::View<PetscScalar*, Kokkos::LayoutRight>*>(SData_d->coo_vals); 465 PetscScalar *d_coo_vals = (SData_d->coo_size==0) ? NULL : d_coo_vals_k->data(); 466 467 PetscFunctionBegin; 468 while (vector_size & (vector_size - 1)) vector_size = vector_size & (vector_size - 1); 469 if (vector_size>16) vector_size = 16; // printf("DEBUG\n"); 470 PetscCall(PetscLogEventBegin(events[3],0,0,0,0)); 471 PetscCall(DMGetApplicationContext(plex[0], &ctx)); 472 PetscCheck(ctx,PETSC_COMM_SELF, PETSC_ERR_PLIB, "no context"); 473 PetscCall(DMGetDimension(plex[0], &dim)); 474 PetscCheck(LANDAU_DIM == dim,PETSC_COMM_WORLD, PETSC_ERR_PLIB, "dim %" PetscInt_FMT " != LANDAU_DIM %d",dim,LANDAU_DIM); 475 if (ctx->gpu_assembly) { 476 PetscCall(PetscObjectQuery((PetscObject) JacP, "assembly_maps", (PetscObject *) &container)); 477 if (container) { 478 P4estVertexMaps *h_maps=NULL; 479 PetscCall(PetscContainerGetPointer(container, (void **) &h_maps)); 480 for (PetscInt grid=0 ; grid<num_grids ; grid++) { 481 if (h_maps[grid].d_self) { 482 maps[grid] = h_maps[grid].d_self; 483 nfaces = h_maps[grid].num_face; // nface=0 for CPU assembly 484 } else { 485 SETERRQ(PETSC_COMM_SELF, PETSC_ERR_PLIB, "GPU assembly but no metadata in container"); 486 } 487 } 488 if (!d_coo_vals) { 489 // this does the setup the first time called 490 PetscCall(MatKokkosGetDeviceMatWrite(JacP,&d_mat)); 491 } else { 492 d_mat = NULL; 493 } 494 } else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_PLIB, "GPU assembly but no metadata in container"); 495 } else { 496 for (PetscInt grid=0 ; grid<num_grids ; grid++) maps[grid] = NULL; 497 nfaces = 0; 498 d_mat = NULL; 499 container = NULL; 500 } 501 num_cells_batch = Nf_max = num_cells_max = 0; 502 for (PetscInt grid=0 ; grid<num_grids ; grid++) { 503 int Nfloc = a_species_offset[grid+1] - a_species_offset[grid]; 504 if (Nfloc > Nf_max) Nf_max = Nfloc; 505 if (a_numCells[grid] > num_cells_max) num_cells_max = a_numCells[grid]; 506 num_cells_batch += a_numCells[grid]; // we don't have a host element offset here (but in ctx) 507 } 508 const int elem_mat_num_cells_max_grid = container ? 0 : num_cells_max; 509 #ifdef LAND_SUPPORT_CPU_ASS 510 const int totDim_max = Nf_max*Nq, elem_mat_size_max = totDim_max*totDim_max; 511 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) 512 #endif 513 const Kokkos::View<PetscReal*, Kokkos::LayoutLeft, Kokkos::HostSpace, Kokkos::MemoryTraits<Kokkos::Unmanaged> > h_Eq_m_k (a_Eq_m, Nftot); 514 if (a_elem_closure || a_xarray) { 515 Kokkos::deep_copy (*d_Eq_m_k, h_Eq_m_k); 516 d_Eq_m = d_Eq_m_k->data(); 517 } else d_Eq_m = NULL; 518 PetscCall(PetscKokkosInitializeCheck()); 519 PetscCall(PetscLogEventEnd(events[3],0,0,0,0)); 520 if (a_elem_closure || a_xarray) { // Jacobian, create f & df 521 Kokkos::View<PetscScalar*, Kokkos::LayoutLeft> *d_vertex_f_k = NULL; 522 PetscCall(PetscLogEventBegin(events[1],0,0,0,0)); 523 if (a_elem_closure) { 524 PetscInt closure_sz = 0; // argh, don't have this on the host!!! 525 for (PetscInt grid=0 ; grid<num_grids ; grid++) { 526 PetscInt nfloc = a_species_offset[grid+1] - a_species_offset[grid]; 527 closure_sz += Nq*nfloc*a_numCells[grid]; 528 } 529 closure_sz *= batch_sz; 530 d_vertex_f_k = new Kokkos::View<PetscScalar*, Kokkos::LayoutLeft> ("closure",closure_sz); 531 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 532 Kokkos::deep_copy (*d_vertex_f_k, h_closure_k); 533 d_vertex_f = d_vertex_f_k->data(); 534 } else { 535 d_vertex_f = (PetscScalar*)a_xarray; 536 } 537 PetscCall(PetscLogEventEnd(events[1],0,0,0,0)); 538 PetscCall(PetscLogEventBegin(events[8],0,0,0,0)); 539 PetscCall(PetscLogGpuTimeBegin()); 540 541 const int scr_bytes_fdf = real2_scr_t::shmem_size(Nf_max,Nb); 542 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,num_cells_batch*batch_sz,team_size,vector_size,nfaces,Nf_max)); 543 Kokkos::parallel_for("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) { 544 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]; 545 // find my grid 546 PetscInt grid = 0; 547 while (b_elem_idx >= d_elem_offset[grid+1]) grid++; 548 { 549 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]; 550 const PetscInt moffset = LAND_MOFFSET(b_id,grid,batch_sz,num_grids,d_mat_offset); 551 { 552 real2_scr_t s_coef_k(team.team_scratch(KOKKOS_SHARED_LEVEL),Nf_max,Nb); 553 PetscScalar *coef; 554 const PetscReal *invJe = &d_invJ_k((d_ip_offset[grid] + loc_elem*Nq)*dim*dim); 555 // un pack IPData 556 if (!maps[grid]) { 557 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 558 } else { 559 coef = s_coef_k.data(); 560 Kokkos::parallel_for(Kokkos::TeamThreadRange(team,0,(int)loc_Nf), [=] (int f) { 561 //for (int f = 0; f < loc_Nf; ++f) { 562 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team,0,(int)Nb), [=] (int b) { 563 //for (int b = 0; b < Nb; ++b) { 564 LandauIdx idx = maps[grid]->gIdx[loc_elem][f][b]; 565 if (idx >= 0) { 566 coef[f*Nb+b] = d_vertex_f[idx+moffset]; // xarray data, not IP, need raw array to deal with CPU assemble case (not used) 567 } else { 568 idx = -idx - 1; 569 coef[f*Nb+b] = 0; 570 for (int q = 0; q < maps[grid]->num_face; q++) { 571 PetscInt id = maps[grid]->c_maps[idx][q].gid; 572 PetscScalar scale = maps[grid]->c_maps[idx][q].scale; 573 if (id >= 0) coef[f*Nb+b] += scale*d_vertex_f[id+moffset]; 574 } 575 } 576 }); 577 }); 578 } 579 team.team_barrier(); 580 Kokkos::parallel_for(Kokkos::TeamThreadRange(team,0,Nq), [=] (int myQi) { 581 const PetscReal *const invJ = &invJe[myQi*dim*dim]; // b_elem_idx: batch element index 582 const PetscReal *Bq = &d_BB[myQi*Nb], *Dq = &d_DD[myQi*Nb*dim]; 583 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team,0,(int)loc_Nf), [=] (int f) { 584 PetscInt b, e, d; 585 PetscReal refSpaceDer[LANDAU_DIM]; 586 const PetscInt idx = d_ipf_offset[grid] + f*loc_nip + loc_elem*Nq + myQi; 587 d_fdf_k(b_id,0,idx) = 0.0; 588 for (d = 0; d < LANDAU_DIM; ++d) refSpaceDer[d] = 0.0; 589 for (b = 0; b < Nb; ++b) { 590 d_fdf_k(b_id,0,idx) += Bq[b]*PetscRealPart(coef[f*Nb+b]); 591 for (d = 0; d < dim; ++d) refSpaceDer[d] += Dq[b*dim+d]*PetscRealPart(coef[f*Nb+b]); 592 } 593 for (d = 0; d < dim; ++d) { 594 for (e = 0, d_fdf_k(b_id,d+1,idx) = 0.0; e < dim; ++e) { 595 d_fdf_k(b_id,d+1,idx) += invJ[e*dim+d]*refSpaceDer[e]; 596 } 597 } 598 }); // f 599 }); // myQi 600 } 601 team.team_barrier(); 602 } // 'grid' scope 603 }); // global elems - fdf 604 Kokkos::fence(); 605 PetscCall(PetscLogGpuTimeEnd()); 606 PetscCall(PetscLogEventEnd(events[8],0,0,0,0)); 607 // Jacobian 608 #if defined(PETSC_HAVE_CUDA) 609 int device; 610 int maximum_shared_mem_size; 611 cudaError_t ier = cudaGetDevice(&device); 612 ier = cudaDeviceGetAttribute(&maximum_shared_mem_size, cudaDevAttrMaxSharedMemoryPerBlock, device); 613 #elif defined(PETSC_HAVE_HIP) 614 int device; 615 int maximum_shared_mem_size; 616 hipGetDevice(&device); 617 hipDeviceGetAttribute(&maximum_shared_mem_size, hipDeviceAttributeMaxSharedMemoryPerBlock, device); 618 #elif defined(PETSC_HAVE_SYCL) 619 int maximum_shared_mem_size = 64000; 620 #else 621 int maximum_shared_mem_size = 72000; 622 #endif 623 const int jac_scr_bytes = 2*(g2_scr_t::shmem_size(dim,Nf_max,Nq) + g3_scr_t::shmem_size(dim,dim,Nf_max,Nq)); 624 const int jac_shared_level = (jac_scr_bytes > maximum_shared_mem_size) ? 1 : KOKKOS_SHARED_LEVEL; 625 auto jac_lambda = KOKKOS_LAMBDA (const team_member team) { 626 const PetscInt b_Nelem = d_elem_offset[num_grids], b_elem_idx = team.league_rank()%b_Nelem, b_id = team.league_rank()/b_Nelem; 627 // find my grid 628 PetscInt grid = 0; 629 while (b_elem_idx >= d_elem_offset[grid+1]) grid++; 630 { 631 const PetscInt loc_Nf = d_species_offset[grid+1]-d_species_offset[grid], loc_elem = b_elem_idx - d_elem_offset[grid]; 632 const PetscInt moffset = LAND_MOFFSET(b_id,grid,batch_sz,num_grids,d_mat_offset); 633 const PetscInt f_off = d_species_offset[grid]; 634 #ifdef LAND_SUPPORT_CPU_ASS 635 const PetscInt totDim = loc_Nf*Nq; 636 #endif 637 g2_scr_t g2(team.team_scratch(jac_shared_level),dim,loc_Nf,Nq); 638 g3_scr_t g3(team.team_scratch(jac_shared_level),dim,dim,loc_Nf,Nq); 639 g2_scr_t gg2(team.team_scratch(jac_shared_level),dim,loc_Nf,Nq); 640 g3_scr_t gg3(team.team_scratch(jac_shared_level),dim,dim,loc_Nf,Nq); 641 // get g2[] & g3[] 642 Kokkos::parallel_for(Kokkos::TeamThreadRange(team,0,Nq), [=] (int myQi) { 643 using Kokkos::parallel_reduce; 644 const PetscInt jpidx_glb = d_ip_offset[grid] + loc_elem * Nq + myQi; 645 const PetscReal *invJ = &d_invJ_k(jpidx_glb*dim*dim); 646 const PetscReal vj[3] = {d_x[jpidx_glb], d_y[jpidx_glb], d_z ? d_z[jpidx_glb] : 0}, wj = d_w[jpidx_glb]; 647 landau_inner_red::TensorValueType gg_temp; // reduce on part of gg2 and g33 for IP jpidx_g 648 Kokkos::parallel_reduce(Kokkos::ThreadVectorRange (team, (int)d_ip_offset[num_grids]), [=] (const int& ipidx, landau_inner_red::TensorValueType & ggg) { 649 const PetscReal wi = d_w[ipidx], x = d_x[ipidx], y = d_y[ipidx]; 650 PetscReal temp1[3] = {0, 0, 0}, temp2 = 0; 651 PetscInt fieldA,d2,d3,f_off_r,grid_r,ipidx_g,nip_loc_r,loc_Nf_r; 652 #if LANDAU_DIM==2 653 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.; 654 LandauTensor2D(vj, x, y, Ud, Uk, mask); 655 #else 656 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.; 657 LandauTensor3D(vj, x, y, z, U, mask); 658 #endif 659 grid_r = 0; 660 while (ipidx >= d_ip_offset[grid_r+1]) grid_r++; // yuck search for grid 661 f_off_r = d_species_offset[grid_r]; 662 ipidx_g = ipidx - d_ip_offset[grid_r]; 663 nip_loc_r = d_numCells[grid_r]*Nq; 664 loc_Nf_r = d_species_offset[grid_r+1] - d_species_offset[grid_r]; 665 for (fieldA = 0; fieldA < loc_Nf_r; ++fieldA) { 666 const PetscInt idx = d_ipf_offset[grid_r] + fieldA*nip_loc_r + ipidx_g; 667 temp1[0] += d_fdf_k(b_id,1,idx)*d_beta[fieldA+f_off_r]*d_invMass[fieldA+f_off_r]; 668 temp1[1] += d_fdf_k(b_id,2,idx)*d_beta[fieldA+f_off_r]*d_invMass[fieldA+f_off_r]; 669 #if LANDAU_DIM==3 670 temp1[2] += d_fdf_k(b_id,3,idx)*d_beta[fieldA+f_off_r]*d_invMass[fieldA+f_off_r]; 671 #endif 672 temp2 += d_fdf_k(b_id,0,idx)*d_beta[fieldA+f_off_r]; 673 } 674 temp1[0] *= wi; 675 temp1[1] *= wi; 676 #if LANDAU_DIM==3 677 temp1[2] *= wi; 678 #endif 679 temp2 *= wi; 680 #if LANDAU_DIM==2 681 for (d2 = 0; d2 < 2; d2++) { 682 for (d3 = 0; d3 < 2; ++d3) { 683 /* K = U * grad(f): g2=e: i,A */ 684 ggg.gg2[d2] += Uk[d2][d3]*temp1[d3]; 685 /* D = -U * (I \kron (fx)): g3=f: i,j,A */ 686 ggg.gg3[d2][d3] += Ud[d2][d3]*temp2; 687 } 688 } 689 #else 690 for (d2 = 0; d2 < 3; ++d2) { 691 for (d3 = 0; d3 < 3; ++d3) { 692 /* K = U * grad(f): g2 = e: i,A */ 693 ggg.gg2[d2] += U[d2][d3]*temp1[d3]; 694 /* D = -U * (I \kron (fx)): g3 = f: i,j,A */ 695 ggg.gg3[d2][d3] += U[d2][d3]*temp2; 696 } 697 } 698 #endif 699 }, Kokkos::Sum<landau_inner_red::TensorValueType>(gg_temp)); 700 // add alpha and put in gg2/3 701 Kokkos::parallel_for(Kokkos::ThreadVectorRange (team, (int)loc_Nf), [&] (const int& fieldA) { 702 PetscInt d2,d3; 703 for (d2 = 0; d2 < dim; d2++) { 704 gg2(d2,fieldA,myQi) = gg_temp.gg2[d2]*d_alpha[fieldA+f_off]; 705 for (d3 = 0; d3 < dim; d3++) { 706 gg3(d2,d3,fieldA,myQi) = -gg_temp.gg3[d2][d3]*d_alpha[fieldA+f_off]*d_invMass[fieldA+f_off]; 707 } 708 } 709 }); 710 /* add electric field term once per IP */ 711 Kokkos::parallel_for(Kokkos::ThreadVectorRange (team, (int)loc_Nf), [&] (const int& fieldA) { 712 gg2(dim-1,fieldA,myQi) += d_Eq_m[fieldA+f_off]; 713 }); 714 Kokkos::parallel_for(Kokkos::ThreadVectorRange (team, (int)loc_Nf), [=] (const int& fieldA) { 715 int d,d2,d3,dp; 716 /* Jacobian transform - g2, g3 - per thread (2D) */ 717 for (d = 0; d < dim; ++d) { 718 g2(d,fieldA,myQi) = 0; 719 for (d2 = 0; d2 < dim; ++d2) { 720 g2(d,fieldA,myQi) += invJ[d*dim+d2]*gg2(d2,fieldA,myQi); 721 g3(d,d2,fieldA,myQi) = 0; 722 for (d3 = 0; d3 < dim; ++d3) { 723 for (dp = 0; dp < dim; ++dp) { 724 g3(d,d2,fieldA,myQi) += invJ[d*dim + d3]*gg3(d3,dp,fieldA,myQi)*invJ[d2*dim + dp]; 725 } 726 } 727 g3(d,d2,fieldA,myQi) *= wj; 728 } 729 g2(d,fieldA,myQi) *= wj; 730 } 731 }); 732 }); // Nq 733 team.team_barrier(); 734 { /* assemble */ 735 for (PetscInt fieldA = 0; fieldA < loc_Nf; fieldA++) { 736 /* assemble */ 737 Kokkos::parallel_for(Kokkos::TeamThreadRange(team,0,Nb), [=] (int f) { 738 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team,0,Nb), [=] (int g) { 739 PetscScalar t = 0; 740 for (int qj = 0 ; qj < Nq ; qj++) { // look at others integration points 741 const PetscReal *BJq = &d_BB[qj*Nb], *DIq = &d_DD[qj*Nb*dim]; 742 for (int d = 0; d < dim; ++d) { 743 t += DIq[f*dim+d]*g2(d,fieldA,qj)*BJq[g]; 744 for (int d2 = 0; d2 < dim; ++d2) { 745 t += DIq[f*dim + d]*g3(d,d2,fieldA,qj)*DIq[g*dim + d2]; 746 } 747 } 748 } 749 if (elem_mat_num_cells_max_grid) { // CPU assembly 750 #ifdef LAND_SUPPORT_CPU_ASS 751 const PetscInt fOff = (fieldA*Nb + f)*totDim + fieldA*Nb + g; 752 d_elem_mats(b_id,grid,loc_elem,fOff) = t; 753 #endif 754 } else { 755 landau_mat_assemble (d_mat, 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); 756 } 757 }); 758 }); 759 } 760 } 761 } // scope with 'grid' 762 }; 763 PetscCall(PetscLogEventBegin(events[4],0,0,0,0)); 764 PetscCall(PetscLogGpuTimeBegin()); 765 PetscCall(PetscInfo(plex[0], "Jacobian shared memory size: %d bytes in level %s (max shared=%d), 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,num_cells_batch*batch_sz,team_size,vector_size,nfaces,Nf_max)); 766 Kokkos::parallel_for("Jacobian", Kokkos::TeamPolicy< >(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> 767 Kokkos::fence(); 768 PetscCall(PetscLogGpuTimeEnd()); 769 PetscCall(PetscLogEventEnd(events[4],0,0,0,0)); 770 if (d_vertex_f_k) delete d_vertex_f_k; 771 } else { // mass 772 PetscCall(PetscLogEventBegin(events[16],0,0,0,0)); 773 PetscCall(PetscLogGpuTimeBegin()); 774 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")); 775 Kokkos::parallel_for("Mass", Kokkos::TeamPolicy< >(num_cells_batch*batch_sz, team_size, vector_size), KOKKOS_LAMBDA (const team_member team) { // Kokkos::LaunchBounds<512,4> 776 const PetscInt b_Nelem = d_elem_offset[num_grids], b_elem_idx = team.league_rank()%b_Nelem, b_id = team.league_rank()/b_Nelem; 777 // find my grid 778 PetscInt grid = 0; 779 while (b_elem_idx >= d_elem_offset[grid+1]) grid++; 780 { 781 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; 782 #ifdef LAND_SUPPORT_CPU_ASS 783 const PetscInt totDim = loc_Nf*Nq; 784 #endif 785 const PetscInt moffset = LAND_MOFFSET(b_id,grid,batch_sz,num_grids,d_mat_offset); 786 for (int fieldA = 0; fieldA < loc_Nf; fieldA++) { 787 /* assemble */ 788 Kokkos::parallel_for(Kokkos::TeamThreadRange(team,0,Nb), [=] (int f) { 789 Kokkos::parallel_for(Kokkos::ThreadVectorRange(team,0,Nb), [=] (int g) { 790 PetscScalar t = 0; 791 for (int qj = 0 ; qj < Nq ; qj++) { // look at others integration points 792 const PetscReal *BJq = &d_BB[qj*Nb]; 793 const PetscInt jpidx_glb = jpidx_0 + qj; 794 if (dim==2) { 795 t += BJq[f] * d_w_k(jpidx_glb) * shift * BJq[g] * 2. * PETSC_PI; 796 } else { 797 t += BJq[f] * d_w_k(jpidx_glb) * shift * BJq[g]; 798 } 799 } 800 if (elem_mat_num_cells_max_grid) { 801 #ifdef LAND_SUPPORT_CPU_ASS 802 const PetscInt fOff = (fieldA*Nb + f)*totDim + fieldA*Nb + g; 803 d_elem_mats(b_id,grid,loc_elem,fOff) = t; 804 #endif 805 } else { 806 landau_mat_assemble (d_mat, 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); 807 } 808 }); 809 }); 810 } // field 811 } // grid 812 }); 813 Kokkos::fence(); 814 PetscCall(PetscLogGpuTimeEnd()); 815 PetscCall(PetscLogEventEnd(events[16],0,0,0,0)); 816 } 817 if (d_coo_vals) { 818 PetscCall(MatSetValuesCOO(JacP,d_coo_vals,ADD_VALUES)); 819 #ifndef LAND_SUPPORT_CPU_ASS 820 Kokkos::fence(); // for timers 821 #endif 822 } else if (elem_mat_num_cells_max_grid) { // CPU assembly 823 #ifdef LAND_SUPPORT_CPU_ASS 824 Kokkos::View<PetscScalar****, Kokkos::LayoutRight>::HostMirror h_elem_mats = Kokkos::create_mirror_view(d_elem_mats); 825 Kokkos::deep_copy (h_elem_mats, d_elem_mats); 826 PetscCheck(!container,PETSC_COMM_SELF, PETSC_ERR_PLIB, "?????"); 827 for (PetscInt b_id = 0 ; b_id < batch_sz ; b_id++) { // OpenMP (once) 828 for (PetscInt grid=0 ; grid<num_grids ; grid++) { 829 PetscSection section, globalSection; 830 PetscInt cStart,cEnd; 831 Mat B = subJ[ LAND_PACK_IDX(b_id,grid) ]; 832 PetscInt moffset = LAND_MOFFSET(b_id,grid,batch_sz,num_grids,a_mat_offset), nloc, nzl, colbuf[1024], row; 833 const PetscInt *cols; 834 const PetscScalar *vals; 835 PetscCall(PetscLogEventBegin(events[5],0,0,0,0)); 836 PetscCall(DMPlexGetHeightStratum(plex[grid],0,&cStart,&cEnd)); 837 PetscCall(DMGetLocalSection(plex[grid], §ion)); 838 PetscCall(DMGetGlobalSection(plex[grid], &globalSection)); 839 PetscCall(PetscLogEventEnd(events[5],0,0,0,0)); 840 PetscCall(PetscLogEventBegin(events[6],0,0,0,0)); 841 for (PetscInt ej = cStart ; ej < cEnd; ++ej) { 842 const PetscScalar *elMat = &h_elem_mats(b_id,grid,ej-cStart,0); 843 PetscCall(DMPlexMatSetClosure(plex[grid], section, globalSection, B, ej, elMat, ADD_VALUES)); 844 if (grid==0 && ej==-1) { 845 const PetscInt loc_Nf = a_species_offset[grid+1]-a_species_offset[grid], totDim = loc_Nf*Nq; 846 int d,f; 847 PetscPrintf(PETSC_COMM_SELF,"Kokkos Element matrix %d/%d\n",1,(int)a_numCells[grid]); 848 for (d = 0; d < totDim; ++d){ 849 for (f = 0; f < totDim; ++f) PetscPrintf(PETSC_COMM_SELF," %12.5e", PetscRealPart(elMat[d*totDim + f])); 850 PetscPrintf(PETSC_COMM_SELF,"\n"); 851 } 852 exit(14); 853 } 854 } 855 // move nest matrix to global JacP 856 PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY)); 857 PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY)); 858 PetscCall(MatGetSize(B, &nloc, NULL)); 859 for (int i=0 ; i<nloc ; i++) { 860 PetscCall(MatGetRow(B,i,&nzl,&cols,&vals)); 861 PetscCheck(nzl<=1024,PetscObjectComm((PetscObject) B), PETSC_ERR_PLIB, "Row too big: %" PetscInt_FMT,nzl); 862 for (int j=0; j<nzl; j++) colbuf[j] = cols[j] + moffset; 863 row = i + moffset; 864 PetscCall(MatSetValues(JacP,1,&row,nzl,colbuf,vals,ADD_VALUES)); 865 PetscCall(MatRestoreRow(B,i,&nzl,&cols,&vals)); 866 } 867 PetscCall(MatDestroy(&subJ[ LAND_PACK_IDX(b_id,grid) ])); 868 PetscCall(PetscLogEventEnd(events[6],0,0,0,0)); 869 } // grids 870 } 871 #else 872 SETERRQ(PETSC_COMM_SELF, PETSC_ERR_PLIB, "CPU assembly not supported"); 873 #endif 874 } 875 PetscFunctionReturn(0); 876 } 877 } // extern "C" 878