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36 * Note: this file was generated by the GROMACS sse4_1_double kernel generator.
44 #include "../nb_kernel.h"
45 #include "gromacs/gmxlib/nrnb.h"
47 #include "kernelutil_x86_sse4_1_double.h"
50 * Gromacs nonbonded kernel: nb_kernel_ElecRF_VdwLJ_GeomW3P1_VF_sse4_1_double
51 * Electrostatics interaction: ReactionField
52 * VdW interaction: LennardJones
53 * Geometry: Water3-Particle
54 * Calculate force/pot: PotentialAndForce
57 nb_kernel_ElecRF_VdwLJ_GeomW3P1_VF_sse4_1_double
58 (t_nblist * gmx_restrict nlist,
59 rvec * gmx_restrict xx,
60 rvec * gmx_restrict ff,
61 struct t_forcerec * gmx_restrict fr,
62 t_mdatoms * gmx_restrict mdatoms,
63 nb_kernel_data_t gmx_unused * gmx_restrict kernel_data,
64 t_nrnb * gmx_restrict nrnb)
66 /* Suffixes 0,1,2,3 refer to particle indices for waters in the inner or outer loop, or
67 * just 0 for non-waters.
68 * Suffixes A,B refer to j loop unrolling done with SSE double precision, e.g. for the two different
69 * jnr indices corresponding to data put in the four positions in the SIMD register.
71 int i_shift_offset,i_coord_offset,outeriter,inneriter;
72 int j_index_start,j_index_end,jidx,nri,inr,ggid,iidx;
74 int j_coord_offsetA,j_coord_offsetB;
75 int *iinr,*jindex,*jjnr,*shiftidx,*gid;
77 real *shiftvec,*fshift,*x,*f;
78 __m128d tx,ty,tz,fscal,rcutoff,rcutoff2,jidxall;
80 __m128d ix0,iy0,iz0,fix0,fiy0,fiz0,iq0,isai0;
82 __m128d ix1,iy1,iz1,fix1,fiy1,fiz1,iq1,isai1;
84 __m128d ix2,iy2,iz2,fix2,fiy2,fiz2,iq2,isai2;
85 int vdwjidx0A,vdwjidx0B;
86 __m128d jx0,jy0,jz0,fjx0,fjy0,fjz0,jq0,isaj0;
87 __m128d dx00,dy00,dz00,rsq00,rinv00,rinvsq00,r00,qq00,c6_00,c12_00;
88 __m128d dx10,dy10,dz10,rsq10,rinv10,rinvsq10,r10,qq10,c6_10,c12_10;
89 __m128d dx20,dy20,dz20,rsq20,rinv20,rinvsq20,r20,qq20,c6_20,c12_20;
90 __m128d velec,felec,velecsum,facel,crf,krf,krf2;
93 __m128d rinvsix,rvdw,vvdw,vvdw6,vvdw12,fvdw,fvdw6,fvdw12,vvdwsum,sh_vdw_invrcut6;
96 __m128d one_sixth = _mm_set1_pd(1.0/6.0);
97 __m128d one_twelfth = _mm_set1_pd(1.0/12.0);
98 __m128d dummy_mask,cutoff_mask;
99 __m128d signbit = gmx_mm_castsi128_pd( _mm_set_epi32(0x80000000,0x00000000,0x80000000,0x00000000) );
100 __m128d one = _mm_set1_pd(1.0);
101 __m128d two = _mm_set1_pd(2.0);
107 jindex = nlist->jindex;
109 shiftidx = nlist->shift;
111 shiftvec = fr->shift_vec[0];
112 fshift = fr->fshift[0];
113 facel = _mm_set1_pd(fr->ic->epsfac);
114 charge = mdatoms->chargeA;
115 krf = _mm_set1_pd(fr->ic->k_rf);
116 krf2 = _mm_set1_pd(fr->ic->k_rf*2.0);
117 crf = _mm_set1_pd(fr->ic->c_rf);
118 nvdwtype = fr->ntype;
120 vdwtype = mdatoms->typeA;
122 /* Setup water-specific parameters */
123 inr = nlist->iinr[0];
124 iq0 = _mm_mul_pd(facel,_mm_set1_pd(charge[inr+0]));
125 iq1 = _mm_mul_pd(facel,_mm_set1_pd(charge[inr+1]));
126 iq2 = _mm_mul_pd(facel,_mm_set1_pd(charge[inr+2]));
127 vdwioffset0 = 2*nvdwtype*vdwtype[inr+0];
129 /* Avoid stupid compiler warnings */
137 /* Start outer loop over neighborlists */
138 for(iidx=0; iidx<nri; iidx++)
140 /* Load shift vector for this list */
141 i_shift_offset = DIM*shiftidx[iidx];
143 /* Load limits for loop over neighbors */
144 j_index_start = jindex[iidx];
145 j_index_end = jindex[iidx+1];
147 /* Get outer coordinate index */
149 i_coord_offset = DIM*inr;
151 /* Load i particle coords and add shift vector */
152 gmx_mm_load_shift_and_3rvec_broadcast_pd(shiftvec+i_shift_offset,x+i_coord_offset,
153 &ix0,&iy0,&iz0,&ix1,&iy1,&iz1,&ix2,&iy2,&iz2);
155 fix0 = _mm_setzero_pd();
156 fiy0 = _mm_setzero_pd();
157 fiz0 = _mm_setzero_pd();
158 fix1 = _mm_setzero_pd();
159 fiy1 = _mm_setzero_pd();
160 fiz1 = _mm_setzero_pd();
161 fix2 = _mm_setzero_pd();
162 fiy2 = _mm_setzero_pd();
163 fiz2 = _mm_setzero_pd();
165 /* Reset potential sums */
166 velecsum = _mm_setzero_pd();
167 vvdwsum = _mm_setzero_pd();
169 /* Start inner kernel loop */
170 for(jidx=j_index_start; jidx<j_index_end-1; jidx+=2)
173 /* Get j neighbor index, and coordinate index */
176 j_coord_offsetA = DIM*jnrA;
177 j_coord_offsetB = DIM*jnrB;
179 /* load j atom coordinates */
180 gmx_mm_load_1rvec_2ptr_swizzle_pd(x+j_coord_offsetA,x+j_coord_offsetB,
183 /* Calculate displacement vector */
184 dx00 = _mm_sub_pd(ix0,jx0);
185 dy00 = _mm_sub_pd(iy0,jy0);
186 dz00 = _mm_sub_pd(iz0,jz0);
187 dx10 = _mm_sub_pd(ix1,jx0);
188 dy10 = _mm_sub_pd(iy1,jy0);
189 dz10 = _mm_sub_pd(iz1,jz0);
190 dx20 = _mm_sub_pd(ix2,jx0);
191 dy20 = _mm_sub_pd(iy2,jy0);
192 dz20 = _mm_sub_pd(iz2,jz0);
194 /* Calculate squared distance and things based on it */
195 rsq00 = gmx_mm_calc_rsq_pd(dx00,dy00,dz00);
196 rsq10 = gmx_mm_calc_rsq_pd(dx10,dy10,dz10);
197 rsq20 = gmx_mm_calc_rsq_pd(dx20,dy20,dz20);
199 rinv00 = sse41_invsqrt_d(rsq00);
200 rinv10 = sse41_invsqrt_d(rsq10);
201 rinv20 = sse41_invsqrt_d(rsq20);
203 rinvsq00 = _mm_mul_pd(rinv00,rinv00);
204 rinvsq10 = _mm_mul_pd(rinv10,rinv10);
205 rinvsq20 = _mm_mul_pd(rinv20,rinv20);
207 /* Load parameters for j particles */
208 jq0 = gmx_mm_load_2real_swizzle_pd(charge+jnrA+0,charge+jnrB+0);
209 vdwjidx0A = 2*vdwtype[jnrA+0];
210 vdwjidx0B = 2*vdwtype[jnrB+0];
212 fjx0 = _mm_setzero_pd();
213 fjy0 = _mm_setzero_pd();
214 fjz0 = _mm_setzero_pd();
216 /**************************
217 * CALCULATE INTERACTIONS *
218 **************************/
220 /* Compute parameters for interactions between i and j atoms */
221 qq00 = _mm_mul_pd(iq0,jq0);
222 gmx_mm_load_2pair_swizzle_pd(vdwparam+vdwioffset0+vdwjidx0A,
223 vdwparam+vdwioffset0+vdwjidx0B,&c6_00,&c12_00);
225 /* REACTION-FIELD ELECTROSTATICS */
226 velec = _mm_mul_pd(qq00,_mm_sub_pd(_mm_add_pd(rinv00,_mm_mul_pd(krf,rsq00)),crf));
227 felec = _mm_mul_pd(qq00,_mm_sub_pd(_mm_mul_pd(rinv00,rinvsq00),krf2));
229 /* LENNARD-JONES DISPERSION/REPULSION */
231 rinvsix = _mm_mul_pd(_mm_mul_pd(rinvsq00,rinvsq00),rinvsq00);
232 vvdw6 = _mm_mul_pd(c6_00,rinvsix);
233 vvdw12 = _mm_mul_pd(c12_00,_mm_mul_pd(rinvsix,rinvsix));
234 vvdw = _mm_sub_pd( _mm_mul_pd(vvdw12,one_twelfth) , _mm_mul_pd(vvdw6,one_sixth) );
235 fvdw = _mm_mul_pd(_mm_sub_pd(vvdw12,vvdw6),rinvsq00);
237 /* Update potential sum for this i atom from the interaction with this j atom. */
238 velecsum = _mm_add_pd(velecsum,velec);
239 vvdwsum = _mm_add_pd(vvdwsum,vvdw);
241 fscal = _mm_add_pd(felec,fvdw);
243 /* Calculate temporary vectorial force */
244 tx = _mm_mul_pd(fscal,dx00);
245 ty = _mm_mul_pd(fscal,dy00);
246 tz = _mm_mul_pd(fscal,dz00);
248 /* Update vectorial force */
249 fix0 = _mm_add_pd(fix0,tx);
250 fiy0 = _mm_add_pd(fiy0,ty);
251 fiz0 = _mm_add_pd(fiz0,tz);
253 fjx0 = _mm_add_pd(fjx0,tx);
254 fjy0 = _mm_add_pd(fjy0,ty);
255 fjz0 = _mm_add_pd(fjz0,tz);
257 /**************************
258 * CALCULATE INTERACTIONS *
259 **************************/
261 /* Compute parameters for interactions between i and j atoms */
262 qq10 = _mm_mul_pd(iq1,jq0);
264 /* REACTION-FIELD ELECTROSTATICS */
265 velec = _mm_mul_pd(qq10,_mm_sub_pd(_mm_add_pd(rinv10,_mm_mul_pd(krf,rsq10)),crf));
266 felec = _mm_mul_pd(qq10,_mm_sub_pd(_mm_mul_pd(rinv10,rinvsq10),krf2));
268 /* Update potential sum for this i atom from the interaction with this j atom. */
269 velecsum = _mm_add_pd(velecsum,velec);
273 /* Calculate temporary vectorial force */
274 tx = _mm_mul_pd(fscal,dx10);
275 ty = _mm_mul_pd(fscal,dy10);
276 tz = _mm_mul_pd(fscal,dz10);
278 /* Update vectorial force */
279 fix1 = _mm_add_pd(fix1,tx);
280 fiy1 = _mm_add_pd(fiy1,ty);
281 fiz1 = _mm_add_pd(fiz1,tz);
283 fjx0 = _mm_add_pd(fjx0,tx);
284 fjy0 = _mm_add_pd(fjy0,ty);
285 fjz0 = _mm_add_pd(fjz0,tz);
287 /**************************
288 * CALCULATE INTERACTIONS *
289 **************************/
291 /* Compute parameters for interactions between i and j atoms */
292 qq20 = _mm_mul_pd(iq2,jq0);
294 /* REACTION-FIELD ELECTROSTATICS */
295 velec = _mm_mul_pd(qq20,_mm_sub_pd(_mm_add_pd(rinv20,_mm_mul_pd(krf,rsq20)),crf));
296 felec = _mm_mul_pd(qq20,_mm_sub_pd(_mm_mul_pd(rinv20,rinvsq20),krf2));
298 /* Update potential sum for this i atom from the interaction with this j atom. */
299 velecsum = _mm_add_pd(velecsum,velec);
303 /* Calculate temporary vectorial force */
304 tx = _mm_mul_pd(fscal,dx20);
305 ty = _mm_mul_pd(fscal,dy20);
306 tz = _mm_mul_pd(fscal,dz20);
308 /* Update vectorial force */
309 fix2 = _mm_add_pd(fix2,tx);
310 fiy2 = _mm_add_pd(fiy2,ty);
311 fiz2 = _mm_add_pd(fiz2,tz);
313 fjx0 = _mm_add_pd(fjx0,tx);
314 fjy0 = _mm_add_pd(fjy0,ty);
315 fjz0 = _mm_add_pd(fjz0,tz);
317 gmx_mm_decrement_1rvec_2ptr_swizzle_pd(f+j_coord_offsetA,f+j_coord_offsetB,fjx0,fjy0,fjz0);
319 /* Inner loop uses 111 flops */
326 j_coord_offsetA = DIM*jnrA;
328 /* load j atom coordinates */
329 gmx_mm_load_1rvec_1ptr_swizzle_pd(x+j_coord_offsetA,
332 /* Calculate displacement vector */
333 dx00 = _mm_sub_pd(ix0,jx0);
334 dy00 = _mm_sub_pd(iy0,jy0);
335 dz00 = _mm_sub_pd(iz0,jz0);
336 dx10 = _mm_sub_pd(ix1,jx0);
337 dy10 = _mm_sub_pd(iy1,jy0);
338 dz10 = _mm_sub_pd(iz1,jz0);
339 dx20 = _mm_sub_pd(ix2,jx0);
340 dy20 = _mm_sub_pd(iy2,jy0);
341 dz20 = _mm_sub_pd(iz2,jz0);
343 /* Calculate squared distance and things based on it */
344 rsq00 = gmx_mm_calc_rsq_pd(dx00,dy00,dz00);
345 rsq10 = gmx_mm_calc_rsq_pd(dx10,dy10,dz10);
346 rsq20 = gmx_mm_calc_rsq_pd(dx20,dy20,dz20);
348 rinv00 = sse41_invsqrt_d(rsq00);
349 rinv10 = sse41_invsqrt_d(rsq10);
350 rinv20 = sse41_invsqrt_d(rsq20);
352 rinvsq00 = _mm_mul_pd(rinv00,rinv00);
353 rinvsq10 = _mm_mul_pd(rinv10,rinv10);
354 rinvsq20 = _mm_mul_pd(rinv20,rinv20);
356 /* Load parameters for j particles */
357 jq0 = _mm_load_sd(charge+jnrA+0);
358 vdwjidx0A = 2*vdwtype[jnrA+0];
360 fjx0 = _mm_setzero_pd();
361 fjy0 = _mm_setzero_pd();
362 fjz0 = _mm_setzero_pd();
364 /**************************
365 * CALCULATE INTERACTIONS *
366 **************************/
368 /* Compute parameters for interactions between i and j atoms */
369 qq00 = _mm_mul_pd(iq0,jq0);
370 gmx_mm_load_1pair_swizzle_pd(vdwparam+vdwioffset0+vdwjidx0A,&c6_00,&c12_00);
372 /* REACTION-FIELD ELECTROSTATICS */
373 velec = _mm_mul_pd(qq00,_mm_sub_pd(_mm_add_pd(rinv00,_mm_mul_pd(krf,rsq00)),crf));
374 felec = _mm_mul_pd(qq00,_mm_sub_pd(_mm_mul_pd(rinv00,rinvsq00),krf2));
376 /* LENNARD-JONES DISPERSION/REPULSION */
378 rinvsix = _mm_mul_pd(_mm_mul_pd(rinvsq00,rinvsq00),rinvsq00);
379 vvdw6 = _mm_mul_pd(c6_00,rinvsix);
380 vvdw12 = _mm_mul_pd(c12_00,_mm_mul_pd(rinvsix,rinvsix));
381 vvdw = _mm_sub_pd( _mm_mul_pd(vvdw12,one_twelfth) , _mm_mul_pd(vvdw6,one_sixth) );
382 fvdw = _mm_mul_pd(_mm_sub_pd(vvdw12,vvdw6),rinvsq00);
384 /* Update potential sum for this i atom from the interaction with this j atom. */
385 velec = _mm_unpacklo_pd(velec,_mm_setzero_pd());
386 velecsum = _mm_add_pd(velecsum,velec);
387 vvdw = _mm_unpacklo_pd(vvdw,_mm_setzero_pd());
388 vvdwsum = _mm_add_pd(vvdwsum,vvdw);
390 fscal = _mm_add_pd(felec,fvdw);
392 fscal = _mm_unpacklo_pd(fscal,_mm_setzero_pd());
394 /* Calculate temporary vectorial force */
395 tx = _mm_mul_pd(fscal,dx00);
396 ty = _mm_mul_pd(fscal,dy00);
397 tz = _mm_mul_pd(fscal,dz00);
399 /* Update vectorial force */
400 fix0 = _mm_add_pd(fix0,tx);
401 fiy0 = _mm_add_pd(fiy0,ty);
402 fiz0 = _mm_add_pd(fiz0,tz);
404 fjx0 = _mm_add_pd(fjx0,tx);
405 fjy0 = _mm_add_pd(fjy0,ty);
406 fjz0 = _mm_add_pd(fjz0,tz);
408 /**************************
409 * CALCULATE INTERACTIONS *
410 **************************/
412 /* Compute parameters for interactions between i and j atoms */
413 qq10 = _mm_mul_pd(iq1,jq0);
415 /* REACTION-FIELD ELECTROSTATICS */
416 velec = _mm_mul_pd(qq10,_mm_sub_pd(_mm_add_pd(rinv10,_mm_mul_pd(krf,rsq10)),crf));
417 felec = _mm_mul_pd(qq10,_mm_sub_pd(_mm_mul_pd(rinv10,rinvsq10),krf2));
419 /* Update potential sum for this i atom from the interaction with this j atom. */
420 velec = _mm_unpacklo_pd(velec,_mm_setzero_pd());
421 velecsum = _mm_add_pd(velecsum,velec);
425 fscal = _mm_unpacklo_pd(fscal,_mm_setzero_pd());
427 /* Calculate temporary vectorial force */
428 tx = _mm_mul_pd(fscal,dx10);
429 ty = _mm_mul_pd(fscal,dy10);
430 tz = _mm_mul_pd(fscal,dz10);
432 /* Update vectorial force */
433 fix1 = _mm_add_pd(fix1,tx);
434 fiy1 = _mm_add_pd(fiy1,ty);
435 fiz1 = _mm_add_pd(fiz1,tz);
437 fjx0 = _mm_add_pd(fjx0,tx);
438 fjy0 = _mm_add_pd(fjy0,ty);
439 fjz0 = _mm_add_pd(fjz0,tz);
441 /**************************
442 * CALCULATE INTERACTIONS *
443 **************************/
445 /* Compute parameters for interactions between i and j atoms */
446 qq20 = _mm_mul_pd(iq2,jq0);
448 /* REACTION-FIELD ELECTROSTATICS */
449 velec = _mm_mul_pd(qq20,_mm_sub_pd(_mm_add_pd(rinv20,_mm_mul_pd(krf,rsq20)),crf));
450 felec = _mm_mul_pd(qq20,_mm_sub_pd(_mm_mul_pd(rinv20,rinvsq20),krf2));
452 /* Update potential sum for this i atom from the interaction with this j atom. */
453 velec = _mm_unpacklo_pd(velec,_mm_setzero_pd());
454 velecsum = _mm_add_pd(velecsum,velec);
458 fscal = _mm_unpacklo_pd(fscal,_mm_setzero_pd());
460 /* Calculate temporary vectorial force */
461 tx = _mm_mul_pd(fscal,dx20);
462 ty = _mm_mul_pd(fscal,dy20);
463 tz = _mm_mul_pd(fscal,dz20);
465 /* Update vectorial force */
466 fix2 = _mm_add_pd(fix2,tx);
467 fiy2 = _mm_add_pd(fiy2,ty);
468 fiz2 = _mm_add_pd(fiz2,tz);
470 fjx0 = _mm_add_pd(fjx0,tx);
471 fjy0 = _mm_add_pd(fjy0,ty);
472 fjz0 = _mm_add_pd(fjz0,tz);
474 gmx_mm_decrement_1rvec_1ptr_swizzle_pd(f+j_coord_offsetA,fjx0,fjy0,fjz0);
476 /* Inner loop uses 111 flops */
479 /* End of innermost loop */
481 gmx_mm_update_iforce_3atom_swizzle_pd(fix0,fiy0,fiz0,fix1,fiy1,fiz1,fix2,fiy2,fiz2,
482 f+i_coord_offset,fshift+i_shift_offset);
485 /* Update potential energies */
486 gmx_mm_update_1pot_pd(velecsum,kernel_data->energygrp_elec+ggid);
487 gmx_mm_update_1pot_pd(vvdwsum,kernel_data->energygrp_vdw+ggid);
489 /* Increment number of inner iterations */
490 inneriter += j_index_end - j_index_start;
492 /* Outer loop uses 20 flops */
495 /* Increment number of outer iterations */
498 /* Update outer/inner flops */
500 inc_nrnb(nrnb,eNR_NBKERNEL_ELEC_VDW_W3_VF,outeriter*20 + inneriter*111);
503 * Gromacs nonbonded kernel: nb_kernel_ElecRF_VdwLJ_GeomW3P1_F_sse4_1_double
504 * Electrostatics interaction: ReactionField
505 * VdW interaction: LennardJones
506 * Geometry: Water3-Particle
507 * Calculate force/pot: Force
510 nb_kernel_ElecRF_VdwLJ_GeomW3P1_F_sse4_1_double
511 (t_nblist * gmx_restrict nlist,
512 rvec * gmx_restrict xx,
513 rvec * gmx_restrict ff,
514 struct t_forcerec * gmx_restrict fr,
515 t_mdatoms * gmx_restrict mdatoms,
516 nb_kernel_data_t gmx_unused * gmx_restrict kernel_data,
517 t_nrnb * gmx_restrict nrnb)
519 /* Suffixes 0,1,2,3 refer to particle indices for waters in the inner or outer loop, or
520 * just 0 for non-waters.
521 * Suffixes A,B refer to j loop unrolling done with SSE double precision, e.g. for the two different
522 * jnr indices corresponding to data put in the four positions in the SIMD register.
524 int i_shift_offset,i_coord_offset,outeriter,inneriter;
525 int j_index_start,j_index_end,jidx,nri,inr,ggid,iidx;
527 int j_coord_offsetA,j_coord_offsetB;
528 int *iinr,*jindex,*jjnr,*shiftidx,*gid;
530 real *shiftvec,*fshift,*x,*f;
531 __m128d tx,ty,tz,fscal,rcutoff,rcutoff2,jidxall;
533 __m128d ix0,iy0,iz0,fix0,fiy0,fiz0,iq0,isai0;
535 __m128d ix1,iy1,iz1,fix1,fiy1,fiz1,iq1,isai1;
537 __m128d ix2,iy2,iz2,fix2,fiy2,fiz2,iq2,isai2;
538 int vdwjidx0A,vdwjidx0B;
539 __m128d jx0,jy0,jz0,fjx0,fjy0,fjz0,jq0,isaj0;
540 __m128d dx00,dy00,dz00,rsq00,rinv00,rinvsq00,r00,qq00,c6_00,c12_00;
541 __m128d dx10,dy10,dz10,rsq10,rinv10,rinvsq10,r10,qq10,c6_10,c12_10;
542 __m128d dx20,dy20,dz20,rsq20,rinv20,rinvsq20,r20,qq20,c6_20,c12_20;
543 __m128d velec,felec,velecsum,facel,crf,krf,krf2;
546 __m128d rinvsix,rvdw,vvdw,vvdw6,vvdw12,fvdw,fvdw6,fvdw12,vvdwsum,sh_vdw_invrcut6;
549 __m128d one_sixth = _mm_set1_pd(1.0/6.0);
550 __m128d one_twelfth = _mm_set1_pd(1.0/12.0);
551 __m128d dummy_mask,cutoff_mask;
552 __m128d signbit = gmx_mm_castsi128_pd( _mm_set_epi32(0x80000000,0x00000000,0x80000000,0x00000000) );
553 __m128d one = _mm_set1_pd(1.0);
554 __m128d two = _mm_set1_pd(2.0);
560 jindex = nlist->jindex;
562 shiftidx = nlist->shift;
564 shiftvec = fr->shift_vec[0];
565 fshift = fr->fshift[0];
566 facel = _mm_set1_pd(fr->ic->epsfac);
567 charge = mdatoms->chargeA;
568 krf = _mm_set1_pd(fr->ic->k_rf);
569 krf2 = _mm_set1_pd(fr->ic->k_rf*2.0);
570 crf = _mm_set1_pd(fr->ic->c_rf);
571 nvdwtype = fr->ntype;
573 vdwtype = mdatoms->typeA;
575 /* Setup water-specific parameters */
576 inr = nlist->iinr[0];
577 iq0 = _mm_mul_pd(facel,_mm_set1_pd(charge[inr+0]));
578 iq1 = _mm_mul_pd(facel,_mm_set1_pd(charge[inr+1]));
579 iq2 = _mm_mul_pd(facel,_mm_set1_pd(charge[inr+2]));
580 vdwioffset0 = 2*nvdwtype*vdwtype[inr+0];
582 /* Avoid stupid compiler warnings */
590 /* Start outer loop over neighborlists */
591 for(iidx=0; iidx<nri; iidx++)
593 /* Load shift vector for this list */
594 i_shift_offset = DIM*shiftidx[iidx];
596 /* Load limits for loop over neighbors */
597 j_index_start = jindex[iidx];
598 j_index_end = jindex[iidx+1];
600 /* Get outer coordinate index */
602 i_coord_offset = DIM*inr;
604 /* Load i particle coords and add shift vector */
605 gmx_mm_load_shift_and_3rvec_broadcast_pd(shiftvec+i_shift_offset,x+i_coord_offset,
606 &ix0,&iy0,&iz0,&ix1,&iy1,&iz1,&ix2,&iy2,&iz2);
608 fix0 = _mm_setzero_pd();
609 fiy0 = _mm_setzero_pd();
610 fiz0 = _mm_setzero_pd();
611 fix1 = _mm_setzero_pd();
612 fiy1 = _mm_setzero_pd();
613 fiz1 = _mm_setzero_pd();
614 fix2 = _mm_setzero_pd();
615 fiy2 = _mm_setzero_pd();
616 fiz2 = _mm_setzero_pd();
618 /* Start inner kernel loop */
619 for(jidx=j_index_start; jidx<j_index_end-1; jidx+=2)
622 /* Get j neighbor index, and coordinate index */
625 j_coord_offsetA = DIM*jnrA;
626 j_coord_offsetB = DIM*jnrB;
628 /* load j atom coordinates */
629 gmx_mm_load_1rvec_2ptr_swizzle_pd(x+j_coord_offsetA,x+j_coord_offsetB,
632 /* Calculate displacement vector */
633 dx00 = _mm_sub_pd(ix0,jx0);
634 dy00 = _mm_sub_pd(iy0,jy0);
635 dz00 = _mm_sub_pd(iz0,jz0);
636 dx10 = _mm_sub_pd(ix1,jx0);
637 dy10 = _mm_sub_pd(iy1,jy0);
638 dz10 = _mm_sub_pd(iz1,jz0);
639 dx20 = _mm_sub_pd(ix2,jx0);
640 dy20 = _mm_sub_pd(iy2,jy0);
641 dz20 = _mm_sub_pd(iz2,jz0);
643 /* Calculate squared distance and things based on it */
644 rsq00 = gmx_mm_calc_rsq_pd(dx00,dy00,dz00);
645 rsq10 = gmx_mm_calc_rsq_pd(dx10,dy10,dz10);
646 rsq20 = gmx_mm_calc_rsq_pd(dx20,dy20,dz20);
648 rinv00 = sse41_invsqrt_d(rsq00);
649 rinv10 = sse41_invsqrt_d(rsq10);
650 rinv20 = sse41_invsqrt_d(rsq20);
652 rinvsq00 = _mm_mul_pd(rinv00,rinv00);
653 rinvsq10 = _mm_mul_pd(rinv10,rinv10);
654 rinvsq20 = _mm_mul_pd(rinv20,rinv20);
656 /* Load parameters for j particles */
657 jq0 = gmx_mm_load_2real_swizzle_pd(charge+jnrA+0,charge+jnrB+0);
658 vdwjidx0A = 2*vdwtype[jnrA+0];
659 vdwjidx0B = 2*vdwtype[jnrB+0];
661 fjx0 = _mm_setzero_pd();
662 fjy0 = _mm_setzero_pd();
663 fjz0 = _mm_setzero_pd();
665 /**************************
666 * CALCULATE INTERACTIONS *
667 **************************/
669 /* Compute parameters for interactions between i and j atoms */
670 qq00 = _mm_mul_pd(iq0,jq0);
671 gmx_mm_load_2pair_swizzle_pd(vdwparam+vdwioffset0+vdwjidx0A,
672 vdwparam+vdwioffset0+vdwjidx0B,&c6_00,&c12_00);
674 /* REACTION-FIELD ELECTROSTATICS */
675 felec = _mm_mul_pd(qq00,_mm_sub_pd(_mm_mul_pd(rinv00,rinvsq00),krf2));
677 /* LENNARD-JONES DISPERSION/REPULSION */
679 rinvsix = _mm_mul_pd(_mm_mul_pd(rinvsq00,rinvsq00),rinvsq00);
680 fvdw = _mm_mul_pd(_mm_sub_pd(_mm_mul_pd(c12_00,rinvsix),c6_00),_mm_mul_pd(rinvsix,rinvsq00));
682 fscal = _mm_add_pd(felec,fvdw);
684 /* Calculate temporary vectorial force */
685 tx = _mm_mul_pd(fscal,dx00);
686 ty = _mm_mul_pd(fscal,dy00);
687 tz = _mm_mul_pd(fscal,dz00);
689 /* Update vectorial force */
690 fix0 = _mm_add_pd(fix0,tx);
691 fiy0 = _mm_add_pd(fiy0,ty);
692 fiz0 = _mm_add_pd(fiz0,tz);
694 fjx0 = _mm_add_pd(fjx0,tx);
695 fjy0 = _mm_add_pd(fjy0,ty);
696 fjz0 = _mm_add_pd(fjz0,tz);
698 /**************************
699 * CALCULATE INTERACTIONS *
700 **************************/
702 /* Compute parameters for interactions between i and j atoms */
703 qq10 = _mm_mul_pd(iq1,jq0);
705 /* REACTION-FIELD ELECTROSTATICS */
706 felec = _mm_mul_pd(qq10,_mm_sub_pd(_mm_mul_pd(rinv10,rinvsq10),krf2));
710 /* Calculate temporary vectorial force */
711 tx = _mm_mul_pd(fscal,dx10);
712 ty = _mm_mul_pd(fscal,dy10);
713 tz = _mm_mul_pd(fscal,dz10);
715 /* Update vectorial force */
716 fix1 = _mm_add_pd(fix1,tx);
717 fiy1 = _mm_add_pd(fiy1,ty);
718 fiz1 = _mm_add_pd(fiz1,tz);
720 fjx0 = _mm_add_pd(fjx0,tx);
721 fjy0 = _mm_add_pd(fjy0,ty);
722 fjz0 = _mm_add_pd(fjz0,tz);
724 /**************************
725 * CALCULATE INTERACTIONS *
726 **************************/
728 /* Compute parameters for interactions between i and j atoms */
729 qq20 = _mm_mul_pd(iq2,jq0);
731 /* REACTION-FIELD ELECTROSTATICS */
732 felec = _mm_mul_pd(qq20,_mm_sub_pd(_mm_mul_pd(rinv20,rinvsq20),krf2));
736 /* Calculate temporary vectorial force */
737 tx = _mm_mul_pd(fscal,dx20);
738 ty = _mm_mul_pd(fscal,dy20);
739 tz = _mm_mul_pd(fscal,dz20);
741 /* Update vectorial force */
742 fix2 = _mm_add_pd(fix2,tx);
743 fiy2 = _mm_add_pd(fiy2,ty);
744 fiz2 = _mm_add_pd(fiz2,tz);
746 fjx0 = _mm_add_pd(fjx0,tx);
747 fjy0 = _mm_add_pd(fjy0,ty);
748 fjz0 = _mm_add_pd(fjz0,tz);
750 gmx_mm_decrement_1rvec_2ptr_swizzle_pd(f+j_coord_offsetA,f+j_coord_offsetB,fjx0,fjy0,fjz0);
752 /* Inner loop uses 91 flops */
759 j_coord_offsetA = DIM*jnrA;
761 /* load j atom coordinates */
762 gmx_mm_load_1rvec_1ptr_swizzle_pd(x+j_coord_offsetA,
765 /* Calculate displacement vector */
766 dx00 = _mm_sub_pd(ix0,jx0);
767 dy00 = _mm_sub_pd(iy0,jy0);
768 dz00 = _mm_sub_pd(iz0,jz0);
769 dx10 = _mm_sub_pd(ix1,jx0);
770 dy10 = _mm_sub_pd(iy1,jy0);
771 dz10 = _mm_sub_pd(iz1,jz0);
772 dx20 = _mm_sub_pd(ix2,jx0);
773 dy20 = _mm_sub_pd(iy2,jy0);
774 dz20 = _mm_sub_pd(iz2,jz0);
776 /* Calculate squared distance and things based on it */
777 rsq00 = gmx_mm_calc_rsq_pd(dx00,dy00,dz00);
778 rsq10 = gmx_mm_calc_rsq_pd(dx10,dy10,dz10);
779 rsq20 = gmx_mm_calc_rsq_pd(dx20,dy20,dz20);
781 rinv00 = sse41_invsqrt_d(rsq00);
782 rinv10 = sse41_invsqrt_d(rsq10);
783 rinv20 = sse41_invsqrt_d(rsq20);
785 rinvsq00 = _mm_mul_pd(rinv00,rinv00);
786 rinvsq10 = _mm_mul_pd(rinv10,rinv10);
787 rinvsq20 = _mm_mul_pd(rinv20,rinv20);
789 /* Load parameters for j particles */
790 jq0 = _mm_load_sd(charge+jnrA+0);
791 vdwjidx0A = 2*vdwtype[jnrA+0];
793 fjx0 = _mm_setzero_pd();
794 fjy0 = _mm_setzero_pd();
795 fjz0 = _mm_setzero_pd();
797 /**************************
798 * CALCULATE INTERACTIONS *
799 **************************/
801 /* Compute parameters for interactions between i and j atoms */
802 qq00 = _mm_mul_pd(iq0,jq0);
803 gmx_mm_load_1pair_swizzle_pd(vdwparam+vdwioffset0+vdwjidx0A,&c6_00,&c12_00);
805 /* REACTION-FIELD ELECTROSTATICS */
806 felec = _mm_mul_pd(qq00,_mm_sub_pd(_mm_mul_pd(rinv00,rinvsq00),krf2));
808 /* LENNARD-JONES DISPERSION/REPULSION */
810 rinvsix = _mm_mul_pd(_mm_mul_pd(rinvsq00,rinvsq00),rinvsq00);
811 fvdw = _mm_mul_pd(_mm_sub_pd(_mm_mul_pd(c12_00,rinvsix),c6_00),_mm_mul_pd(rinvsix,rinvsq00));
813 fscal = _mm_add_pd(felec,fvdw);
815 fscal = _mm_unpacklo_pd(fscal,_mm_setzero_pd());
817 /* Calculate temporary vectorial force */
818 tx = _mm_mul_pd(fscal,dx00);
819 ty = _mm_mul_pd(fscal,dy00);
820 tz = _mm_mul_pd(fscal,dz00);
822 /* Update vectorial force */
823 fix0 = _mm_add_pd(fix0,tx);
824 fiy0 = _mm_add_pd(fiy0,ty);
825 fiz0 = _mm_add_pd(fiz0,tz);
827 fjx0 = _mm_add_pd(fjx0,tx);
828 fjy0 = _mm_add_pd(fjy0,ty);
829 fjz0 = _mm_add_pd(fjz0,tz);
831 /**************************
832 * CALCULATE INTERACTIONS *
833 **************************/
835 /* Compute parameters for interactions between i and j atoms */
836 qq10 = _mm_mul_pd(iq1,jq0);
838 /* REACTION-FIELD ELECTROSTATICS */
839 felec = _mm_mul_pd(qq10,_mm_sub_pd(_mm_mul_pd(rinv10,rinvsq10),krf2));
843 fscal = _mm_unpacklo_pd(fscal,_mm_setzero_pd());
845 /* Calculate temporary vectorial force */
846 tx = _mm_mul_pd(fscal,dx10);
847 ty = _mm_mul_pd(fscal,dy10);
848 tz = _mm_mul_pd(fscal,dz10);
850 /* Update vectorial force */
851 fix1 = _mm_add_pd(fix1,tx);
852 fiy1 = _mm_add_pd(fiy1,ty);
853 fiz1 = _mm_add_pd(fiz1,tz);
855 fjx0 = _mm_add_pd(fjx0,tx);
856 fjy0 = _mm_add_pd(fjy0,ty);
857 fjz0 = _mm_add_pd(fjz0,tz);
859 /**************************
860 * CALCULATE INTERACTIONS *
861 **************************/
863 /* Compute parameters for interactions between i and j atoms */
864 qq20 = _mm_mul_pd(iq2,jq0);
866 /* REACTION-FIELD ELECTROSTATICS */
867 felec = _mm_mul_pd(qq20,_mm_sub_pd(_mm_mul_pd(rinv20,rinvsq20),krf2));
871 fscal = _mm_unpacklo_pd(fscal,_mm_setzero_pd());
873 /* Calculate temporary vectorial force */
874 tx = _mm_mul_pd(fscal,dx20);
875 ty = _mm_mul_pd(fscal,dy20);
876 tz = _mm_mul_pd(fscal,dz20);
878 /* Update vectorial force */
879 fix2 = _mm_add_pd(fix2,tx);
880 fiy2 = _mm_add_pd(fiy2,ty);
881 fiz2 = _mm_add_pd(fiz2,tz);
883 fjx0 = _mm_add_pd(fjx0,tx);
884 fjy0 = _mm_add_pd(fjy0,ty);
885 fjz0 = _mm_add_pd(fjz0,tz);
887 gmx_mm_decrement_1rvec_1ptr_swizzle_pd(f+j_coord_offsetA,fjx0,fjy0,fjz0);
889 /* Inner loop uses 91 flops */
892 /* End of innermost loop */
894 gmx_mm_update_iforce_3atom_swizzle_pd(fix0,fiy0,fiz0,fix1,fiy1,fiz1,fix2,fiy2,fiz2,
895 f+i_coord_offset,fshift+i_shift_offset);
897 /* Increment number of inner iterations */
898 inneriter += j_index_end - j_index_start;
900 /* Outer loop uses 18 flops */
903 /* Increment number of outer iterations */
906 /* Update outer/inner flops */
908 inc_nrnb(nrnb,eNR_NBKERNEL_ELEC_VDW_W3_F,outeriter*18 + inneriter*91);