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36 * Note: this file was generated by the Verlet kernel generator for
46 #include "gromacs/mdlib/nbnxn_simd.h"
48 #ifdef GMX_NBNXN_SIMD_2XNN
50 /* Include the full-width SIMD macros */
51 #include "gromacs/simd/vector_operations.h"
53 #if !(GMX_SIMD_REAL_WIDTH == 8 || GMX_SIMD_REAL_WIDTH == 16)
54 #error "unsupported SIMD width"
57 #define GMX_SIMD_J_UNROLL_SIZE 2
58 #include "nbnxn_kernel_simd_2xnn.h"
59 #include "../nbnxn_kernel_common.h"
60 #include "gmx_omp_nthreads.h"
61 #include "types/force_flags.h"
62 #include "gmx_fatal.h"
64 /*! \brief Kinds of electrostatic treatments in SIMD Verlet kernels
67 coulktRF, coulktTAB, coulktTAB_TWIN, coulktEWALD, coulktEWALD_TWIN, coulktNR
70 /*! \brief Kinds of Van der Waals treatments in SIMD Verlet kernels
73 vdwktLJCUT_COMBGEOM, vdwktLJCUT_COMBLB, vdwktLJCUT_COMBNONE, vdwktLJFORCESWITCH, vdwktLJPOTSWITCH, vdwktLJEWALDCOMBGEOM, vdwktNR
76 /* Declare and define the kernel function pointer lookup tables.
77 * The minor index of the array goes over both the LJ combination rules,
78 * which is only supported by plain cut-off, and the LJ switch/PME functions.
80 static p_nbk_func_noener p_nbk_noener[coulktNR][vdwktNR] =
83 nbnxn_kernel_ElecRF_VdwLJCombGeom_F_2xnn,
84 nbnxn_kernel_ElecRF_VdwLJCombLB_F_2xnn,
85 nbnxn_kernel_ElecRF_VdwLJ_F_2xnn,
86 nbnxn_kernel_ElecRF_VdwLJFSw_F_2xnn,
87 nbnxn_kernel_ElecRF_VdwLJPSw_F_2xnn,
88 nbnxn_kernel_ElecRF_VdwLJEwCombGeom_F_2xnn,
91 nbnxn_kernel_ElecQSTab_VdwLJCombGeom_F_2xnn,
92 nbnxn_kernel_ElecQSTab_VdwLJCombLB_F_2xnn,
93 nbnxn_kernel_ElecQSTab_VdwLJ_F_2xnn,
94 nbnxn_kernel_ElecQSTab_VdwLJFSw_F_2xnn,
95 nbnxn_kernel_ElecQSTab_VdwLJPSw_F_2xnn,
96 nbnxn_kernel_ElecQSTab_VdwLJEwCombGeom_F_2xnn,
99 nbnxn_kernel_ElecQSTabTwinCut_VdwLJCombGeom_F_2xnn,
100 nbnxn_kernel_ElecQSTabTwinCut_VdwLJCombLB_F_2xnn,
101 nbnxn_kernel_ElecQSTabTwinCut_VdwLJ_F_2xnn,
102 nbnxn_kernel_ElecQSTabTwinCut_VdwLJFSw_F_2xnn,
103 nbnxn_kernel_ElecQSTabTwinCut_VdwLJPSw_F_2xnn,
104 nbnxn_kernel_ElecQSTabTwinCut_VdwLJEwCombGeom_F_2xnn,
107 nbnxn_kernel_ElecEw_VdwLJCombGeom_F_2xnn,
108 nbnxn_kernel_ElecEw_VdwLJCombLB_F_2xnn,
109 nbnxn_kernel_ElecEw_VdwLJ_F_2xnn,
110 nbnxn_kernel_ElecEw_VdwLJFSw_F_2xnn,
111 nbnxn_kernel_ElecEw_VdwLJPSw_F_2xnn,
112 nbnxn_kernel_ElecEw_VdwLJEwCombGeom_F_2xnn,
115 nbnxn_kernel_ElecEwTwinCut_VdwLJCombGeom_F_2xnn,
116 nbnxn_kernel_ElecEwTwinCut_VdwLJCombLB_F_2xnn,
117 nbnxn_kernel_ElecEwTwinCut_VdwLJ_F_2xnn,
118 nbnxn_kernel_ElecEwTwinCut_VdwLJFSw_F_2xnn,
119 nbnxn_kernel_ElecEwTwinCut_VdwLJPSw_F_2xnn,
120 nbnxn_kernel_ElecEwTwinCut_VdwLJEwCombGeom_F_2xnn,
124 static p_nbk_func_ener p_nbk_ener[coulktNR][vdwktNR] =
127 nbnxn_kernel_ElecRF_VdwLJCombGeom_VF_2xnn,
128 nbnxn_kernel_ElecRF_VdwLJCombLB_VF_2xnn,
129 nbnxn_kernel_ElecRF_VdwLJ_VF_2xnn,
130 nbnxn_kernel_ElecRF_VdwLJFSw_VF_2xnn,
131 nbnxn_kernel_ElecRF_VdwLJPSw_VF_2xnn,
132 nbnxn_kernel_ElecRF_VdwLJEwCombGeom_VF_2xnn,
135 nbnxn_kernel_ElecQSTab_VdwLJCombGeom_VF_2xnn,
136 nbnxn_kernel_ElecQSTab_VdwLJCombLB_VF_2xnn,
137 nbnxn_kernel_ElecQSTab_VdwLJ_VF_2xnn,
138 nbnxn_kernel_ElecQSTab_VdwLJFSw_VF_2xnn,
139 nbnxn_kernel_ElecQSTab_VdwLJPSw_VF_2xnn,
140 nbnxn_kernel_ElecQSTab_VdwLJEwCombGeom_VF_2xnn,
143 nbnxn_kernel_ElecQSTabTwinCut_VdwLJCombGeom_VF_2xnn,
144 nbnxn_kernel_ElecQSTabTwinCut_VdwLJCombLB_VF_2xnn,
145 nbnxn_kernel_ElecQSTabTwinCut_VdwLJ_VF_2xnn,
146 nbnxn_kernel_ElecQSTabTwinCut_VdwLJFSw_VF_2xnn,
147 nbnxn_kernel_ElecQSTabTwinCut_VdwLJPSw_VF_2xnn,
148 nbnxn_kernel_ElecQSTabTwinCut_VdwLJEwCombGeom_VF_2xnn,
151 nbnxn_kernel_ElecEw_VdwLJCombGeom_VF_2xnn,
152 nbnxn_kernel_ElecEw_VdwLJCombLB_VF_2xnn,
153 nbnxn_kernel_ElecEw_VdwLJ_VF_2xnn,
154 nbnxn_kernel_ElecEw_VdwLJFSw_VF_2xnn,
155 nbnxn_kernel_ElecEw_VdwLJPSw_VF_2xnn,
156 nbnxn_kernel_ElecEw_VdwLJEwCombGeom_VF_2xnn,
159 nbnxn_kernel_ElecEwTwinCut_VdwLJCombGeom_VF_2xnn,
160 nbnxn_kernel_ElecEwTwinCut_VdwLJCombLB_VF_2xnn,
161 nbnxn_kernel_ElecEwTwinCut_VdwLJ_VF_2xnn,
162 nbnxn_kernel_ElecEwTwinCut_VdwLJFSw_VF_2xnn,
163 nbnxn_kernel_ElecEwTwinCut_VdwLJPSw_VF_2xnn,
164 nbnxn_kernel_ElecEwTwinCut_VdwLJEwCombGeom_VF_2xnn,
168 static p_nbk_func_ener p_nbk_energrp[coulktNR][vdwktNR] =
171 nbnxn_kernel_ElecRF_VdwLJCombGeom_VgrpF_2xnn,
172 nbnxn_kernel_ElecRF_VdwLJCombLB_VgrpF_2xnn,
173 nbnxn_kernel_ElecRF_VdwLJ_VgrpF_2xnn,
174 nbnxn_kernel_ElecRF_VdwLJFSw_VgrpF_2xnn,
175 nbnxn_kernel_ElecRF_VdwLJPSw_VgrpF_2xnn,
176 nbnxn_kernel_ElecRF_VdwLJEwCombGeom_VgrpF_2xnn,
179 nbnxn_kernel_ElecQSTab_VdwLJCombGeom_VgrpF_2xnn,
180 nbnxn_kernel_ElecQSTab_VdwLJCombLB_VgrpF_2xnn,
181 nbnxn_kernel_ElecQSTab_VdwLJ_VgrpF_2xnn,
182 nbnxn_kernel_ElecQSTab_VdwLJFSw_VgrpF_2xnn,
183 nbnxn_kernel_ElecQSTab_VdwLJPSw_VgrpF_2xnn,
184 nbnxn_kernel_ElecQSTab_VdwLJEwCombGeom_VgrpF_2xnn,
187 nbnxn_kernel_ElecQSTabTwinCut_VdwLJCombGeom_VgrpF_2xnn,
188 nbnxn_kernel_ElecQSTabTwinCut_VdwLJCombLB_VgrpF_2xnn,
189 nbnxn_kernel_ElecQSTabTwinCut_VdwLJ_VgrpF_2xnn,
190 nbnxn_kernel_ElecQSTabTwinCut_VdwLJFSw_VgrpF_2xnn,
191 nbnxn_kernel_ElecQSTabTwinCut_VdwLJPSw_VgrpF_2xnn,
192 nbnxn_kernel_ElecQSTabTwinCut_VdwLJEwCombGeom_VgrpF_2xnn,
195 nbnxn_kernel_ElecEw_VdwLJCombGeom_VgrpF_2xnn,
196 nbnxn_kernel_ElecEw_VdwLJCombLB_VgrpF_2xnn,
197 nbnxn_kernel_ElecEw_VdwLJ_VgrpF_2xnn,
198 nbnxn_kernel_ElecEw_VdwLJFSw_VgrpF_2xnn,
199 nbnxn_kernel_ElecEw_VdwLJPSw_VgrpF_2xnn,
200 nbnxn_kernel_ElecEw_VdwLJEwCombGeom_VgrpF_2xnn,
203 nbnxn_kernel_ElecEwTwinCut_VdwLJCombGeom_VgrpF_2xnn,
204 nbnxn_kernel_ElecEwTwinCut_VdwLJCombLB_VgrpF_2xnn,
205 nbnxn_kernel_ElecEwTwinCut_VdwLJ_VgrpF_2xnn,
206 nbnxn_kernel_ElecEwTwinCut_VdwLJFSw_VgrpF_2xnn,
207 nbnxn_kernel_ElecEwTwinCut_VdwLJPSw_VgrpF_2xnn,
208 nbnxn_kernel_ElecEwTwinCut_VdwLJEwCombGeom_VgrpF_2xnn,
214 reduce_group_energies(int ng, int ng_2log,
215 const real *VSvdw, const real *VSc,
216 real *Vvdw, real *Vc)
218 const int unrollj = GMX_SIMD_REAL_WIDTH/GMX_SIMD_J_UNROLL_SIZE;
219 const int unrollj_half = unrollj/2;
220 int ng_p2, i, j, j0, j1, c, s;
222 ng_p2 = (1<<ng_2log);
224 /* The size of the x86 SIMD energy group buffer array is:
225 * ng*ng*ng_p2*unrollj_half*simd_width
227 for (i = 0; i < ng; i++)
229 for (j = 0; j < ng; j++)
235 for (j1 = 0; j1 < ng; j1++)
237 for (j0 = 0; j0 < ng; j0++)
239 c = ((i*ng + j1)*ng_p2 + j0)*unrollj_half*unrollj;
240 for (s = 0; s < unrollj_half; s++)
242 Vvdw[i*ng+j0] += VSvdw[c+0];
243 Vvdw[i*ng+j1] += VSvdw[c+1];
244 Vc [i*ng+j0] += VSc [c+0];
245 Vc [i*ng+j1] += VSc [c+1];
253 #else /* GMX_NBNXN_SIMD_2XNN */
255 #include "gmx_fatal.h"
257 #endif /* GMX_NBNXN_SIMD_2XNN */
260 nbnxn_kernel_simd_2xnn(nbnxn_pairlist_set_t gmx_unused *nbl_list,
261 const nbnxn_atomdata_t gmx_unused *nbat,
262 const interaction_const_t gmx_unused *ic,
263 int gmx_unused ewald_excl,
264 rvec gmx_unused *shift_vec,
265 int gmx_unused force_flags,
266 int gmx_unused clearF,
267 real gmx_unused *fshift,
269 real gmx_unused *Vvdw)
270 #ifdef GMX_NBNXN_SIMD_2XNN
273 nbnxn_pairlist_t **nbl;
274 int coulkt, vdwkt = 0;
276 int nthreads gmx_unused;
278 nnbl = nbl_list->nnbl;
281 if (EEL_RF(ic->eeltype) || ic->eeltype == eelCUT)
287 if (ewald_excl == ewaldexclTable)
289 if (ic->rcoulomb == ic->rvdw)
295 coulkt = coulktTAB_TWIN;
300 if (ic->rcoulomb == ic->rvdw)
302 coulkt = coulktEWALD;
306 coulkt = coulktEWALD_TWIN;
311 if (ic->vdwtype == evdwCUT)
313 switch (ic->vdw_modifier)
316 case eintmodPOTSHIFT:
317 switch (nbat->comb_rule)
319 case ljcrGEOM: vdwkt = vdwktLJCUT_COMBGEOM; break;
320 case ljcrLB: vdwkt = vdwktLJCUT_COMBLB; break;
321 case ljcrNONE: vdwkt = vdwktLJCUT_COMBNONE; break;
322 default: gmx_incons("Unknown combination rule");
325 case eintmodFORCESWITCH:
326 vdwkt = vdwktLJFORCESWITCH;
328 case eintmodPOTSWITCH:
329 vdwkt = vdwktLJPOTSWITCH;
332 gmx_incons("Unsupported VdW interaction modifier");
335 else if (ic->vdwtype == evdwPME)
337 if (ic->ljpme_comb_rule == eljpmeLB)
339 gmx_incons("The nbnxn SIMD kernels don't suport LJ-PME with LB");
341 vdwkt = vdwktLJEWALDCOMBGEOM;
345 gmx_incons("Unsupported VdW interaction type");
348 nthreads = gmx_omp_nthreads_get(emntNonbonded);
349 #pragma omp parallel for schedule(static) num_threads(nthreads)
350 for (nb = 0; nb < nnbl; nb++)
352 nbnxn_atomdata_output_t *out;
355 out = &nbat->out[nb];
357 if (clearF == enbvClearFYes)
359 clear_f(nbat, nb, out->f);
362 if ((force_flags & GMX_FORCE_VIRIAL) && nnbl == 1)
368 fshift_p = out->fshift;
370 if (clearF == enbvClearFYes)
372 clear_fshift(fshift_p);
376 if (!(force_flags & GMX_FORCE_ENERGY))
378 /* Don't calculate energies */
379 p_nbk_noener[coulkt][vdwkt](nbl[nb], nbat,
385 else if (out->nV == 1)
387 /* No energy groups */
391 p_nbk_ener[coulkt][vdwkt](nbl[nb], nbat,
401 /* Calculate energy group contributions */
404 for (i = 0; i < out->nVS; i++)
408 for (i = 0; i < out->nVS; i++)
413 p_nbk_energrp[coulkt][vdwkt](nbl[nb], nbat,
421 reduce_group_energies(nbat->nenergrp, nbat->neg_2log,
422 out->VSvdw, out->VSc,
427 if (force_flags & GMX_FORCE_ENERGY)
429 reduce_energies_over_lists(nbat, nnbl, Vvdw, Vc);
434 gmx_incons("nbnxn_kernel_simd_2xnn called when such kernels "
435 " are not enabled.");
438 #undef GMX_SIMD_J_UNROLL_SIZE