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