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36 * Note: this file was generated by the GROMACS sparc64_hpc_ace_double kernel generator.
42 #include "../nb_kernel.h"
43 #include "gromacs/legacyheaders/types/simple.h"
44 #include "gromacs/math/vec.h"
45 #include "gromacs/legacyheaders/nrnb.h"
47 #include "kernelutil_sparc64_hpc_ace_double.h"
50 * Gromacs nonbonded kernel: nb_kernel_ElecNone_VdwLJSw_GeomP1P1_VF_sparc64_hpc_ace_double
51 * Electrostatics interaction: None
52 * VdW interaction: LennardJones
53 * Geometry: Particle-Particle
54 * Calculate force/pot: PotentialAndForce
57 nb_kernel_ElecNone_VdwLJSw_GeomP1P1_VF_sparc64_hpc_ace_double
58 (t_nblist * gmx_restrict nlist,
59 rvec * gmx_restrict xx,
60 rvec * gmx_restrict ff,
61 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 double precision SIMD, 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 _fjsp_v2r8 tx,ty,tz,fscal,rcutoff,rcutoff2,jidxall;
80 _fjsp_v2r8 ix0,iy0,iz0,fix0,fiy0,fiz0,iq0,isai0;
81 int vdwjidx0A,vdwjidx0B;
82 _fjsp_v2r8 jx0,jy0,jz0,fjx0,fjy0,fjz0,jq0,isaj0;
83 _fjsp_v2r8 dx00,dy00,dz00,rsq00,rinv00,rinvsq00,r00,qq00,c6_00,c12_00;
85 _fjsp_v2r8 rinvsix,rvdw,vvdw,vvdw6,vvdw12,fvdw,fvdw6,fvdw12,vvdwsum,sh_vdw_invrcut6;
88 _fjsp_v2r8 one_sixth = gmx_fjsp_set1_v2r8(1.0/6.0);
89 _fjsp_v2r8 one_twelfth = gmx_fjsp_set1_v2r8(1.0/12.0);
90 _fjsp_v2r8 rswitch,swV3,swV4,swV5,swF2,swF3,swF4,d,d2,sw,dsw;
91 real rswitch_scalar,d_scalar;
93 _fjsp_v2r8 dummy_mask,cutoff_mask;
94 _fjsp_v2r8 one = gmx_fjsp_set1_v2r8(1.0);
95 _fjsp_v2r8 two = gmx_fjsp_set1_v2r8(2.0);
96 union { _fjsp_v2r8 simd; long long int i[2]; } vfconv,gbconv,ewconv;
103 jindex = nlist->jindex;
105 shiftidx = nlist->shift;
107 shiftvec = fr->shift_vec[0];
108 fshift = fr->fshift[0];
109 nvdwtype = fr->ntype;
111 vdwtype = mdatoms->typeA;
113 rcutoff_scalar = fr->rvdw;
114 rcutoff = gmx_fjsp_set1_v2r8(rcutoff_scalar);
115 rcutoff2 = _fjsp_mul_v2r8(rcutoff,rcutoff);
117 rswitch_scalar = fr->rvdw_switch;
118 rswitch = gmx_fjsp_set1_v2r8(rswitch_scalar);
119 /* Setup switch parameters */
120 d_scalar = rcutoff_scalar-rswitch_scalar;
121 d = gmx_fjsp_set1_v2r8(d_scalar);
122 swV3 = gmx_fjsp_set1_v2r8(-10.0/(d_scalar*d_scalar*d_scalar));
123 swV4 = gmx_fjsp_set1_v2r8( 15.0/(d_scalar*d_scalar*d_scalar*d_scalar));
124 swV5 = gmx_fjsp_set1_v2r8( -6.0/(d_scalar*d_scalar*d_scalar*d_scalar*d_scalar));
125 swF2 = gmx_fjsp_set1_v2r8(-30.0/(d_scalar*d_scalar*d_scalar));
126 swF3 = gmx_fjsp_set1_v2r8( 60.0/(d_scalar*d_scalar*d_scalar*d_scalar));
127 swF4 = gmx_fjsp_set1_v2r8(-30.0/(d_scalar*d_scalar*d_scalar*d_scalar*d_scalar));
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_fjsp_load_shift_and_1rvec_broadcast_v2r8(shiftvec+i_shift_offset,x+i_coord_offset,&ix0,&iy0,&iz0);
154 fix0 = _fjsp_setzero_v2r8();
155 fiy0 = _fjsp_setzero_v2r8();
156 fiz0 = _fjsp_setzero_v2r8();
158 /* Load parameters for i particles */
159 vdwioffset0 = 2*nvdwtype*vdwtype[inr+0];
161 /* Reset potential sums */
162 vvdwsum = _fjsp_setzero_v2r8();
164 /* Start inner kernel loop */
165 for(jidx=j_index_start; jidx<j_index_end-1; jidx+=2)
168 /* Get j neighbor index, and coordinate index */
171 j_coord_offsetA = DIM*jnrA;
172 j_coord_offsetB = DIM*jnrB;
174 /* load j atom coordinates */
175 gmx_fjsp_load_1rvec_2ptr_swizzle_v2r8(x+j_coord_offsetA,x+j_coord_offsetB,
178 /* Calculate displacement vector */
179 dx00 = _fjsp_sub_v2r8(ix0,jx0);
180 dy00 = _fjsp_sub_v2r8(iy0,jy0);
181 dz00 = _fjsp_sub_v2r8(iz0,jz0);
183 /* Calculate squared distance and things based on it */
184 rsq00 = gmx_fjsp_calc_rsq_v2r8(dx00,dy00,dz00);
186 rinv00 = gmx_fjsp_invsqrt_v2r8(rsq00);
188 rinvsq00 = _fjsp_mul_v2r8(rinv00,rinv00);
190 /* Load parameters for j particles */
191 vdwjidx0A = 2*vdwtype[jnrA+0];
192 vdwjidx0B = 2*vdwtype[jnrB+0];
194 /**************************
195 * CALCULATE INTERACTIONS *
196 **************************/
198 if (gmx_fjsp_any_lt_v2r8(rsq00,rcutoff2))
201 r00 = _fjsp_mul_v2r8(rsq00,rinv00);
203 /* Compute parameters for interactions between i and j atoms */
204 gmx_fjsp_load_2pair_swizzle_v2r8(vdwparam+vdwioffset0+vdwjidx0A,
205 vdwparam+vdwioffset0+vdwjidx0B,&c6_00,&c12_00);
207 /* LENNARD-JONES DISPERSION/REPULSION */
209 rinvsix = _fjsp_mul_v2r8(_fjsp_mul_v2r8(rinvsq00,rinvsq00),rinvsq00);
210 vvdw6 = _fjsp_mul_v2r8(c6_00,rinvsix);
211 vvdw12 = _fjsp_mul_v2r8(c12_00,_fjsp_mul_v2r8(rinvsix,rinvsix));
212 vvdw = _fjsp_msub_v2r8( vvdw12,one_twelfth, _fjsp_mul_v2r8(vvdw6,one_sixth) );
213 fvdw = _fjsp_mul_v2r8(_fjsp_sub_v2r8(vvdw12,vvdw6),rinvsq00);
215 d = _fjsp_sub_v2r8(r00,rswitch);
216 d = _fjsp_max_v2r8(d,_fjsp_setzero_v2r8());
217 d2 = _fjsp_mul_v2r8(d,d);
218 sw = _fjsp_add_v2r8(one,_fjsp_mul_v2r8(d2,_fjsp_mul_v2r8(d,_fjsp_madd_v2r8(d,_fjsp_madd_v2r8(d,swV5,swV4),swV3))));
220 dsw = _fjsp_mul_v2r8(d2,_fjsp_madd_v2r8(d,_fjsp_madd_v2r8(d,swF4,swF3),swF2));
222 /* Evaluate switch function */
223 /* fscal'=f'/r=-(v*sw)'/r=-(v'*sw+v*dsw)/r=-v'*sw/r-v*dsw/r=fscal*sw-v*dsw/r */
224 fvdw = _fjsp_msub_v2r8( fvdw,sw , _fjsp_mul_v2r8(rinv00,_fjsp_mul_v2r8(vvdw,dsw)) );
225 vvdw = _fjsp_mul_v2r8(vvdw,sw);
226 cutoff_mask = _fjsp_cmplt_v2r8(rsq00,rcutoff2);
228 /* Update potential sum for this i atom from the interaction with this j atom. */
229 vvdw = _fjsp_and_v2r8(vvdw,cutoff_mask);
230 vvdwsum = _fjsp_add_v2r8(vvdwsum,vvdw);
234 fscal = _fjsp_and_v2r8(fscal,cutoff_mask);
236 /* Update vectorial force */
237 fix0 = _fjsp_madd_v2r8(dx00,fscal,fix0);
238 fiy0 = _fjsp_madd_v2r8(dy00,fscal,fiy0);
239 fiz0 = _fjsp_madd_v2r8(dz00,fscal,fiz0);
241 gmx_fjsp_decrement_fma_1rvec_2ptr_swizzle_v2r8(f+j_coord_offsetA,f+j_coord_offsetB,fscal,dx00,dy00,dz00);
245 /* Inner loop uses 62 flops */
252 j_coord_offsetA = DIM*jnrA;
254 /* load j atom coordinates */
255 gmx_fjsp_load_1rvec_1ptr_swizzle_v2r8(x+j_coord_offsetA,
258 /* Calculate displacement vector */
259 dx00 = _fjsp_sub_v2r8(ix0,jx0);
260 dy00 = _fjsp_sub_v2r8(iy0,jy0);
261 dz00 = _fjsp_sub_v2r8(iz0,jz0);
263 /* Calculate squared distance and things based on it */
264 rsq00 = gmx_fjsp_calc_rsq_v2r8(dx00,dy00,dz00);
266 rinv00 = gmx_fjsp_invsqrt_v2r8(rsq00);
268 rinvsq00 = _fjsp_mul_v2r8(rinv00,rinv00);
270 /* Load parameters for j particles */
271 vdwjidx0A = 2*vdwtype[jnrA+0];
273 /**************************
274 * CALCULATE INTERACTIONS *
275 **************************/
277 if (gmx_fjsp_any_lt_v2r8(rsq00,rcutoff2))
280 r00 = _fjsp_mul_v2r8(rsq00,rinv00);
282 /* Compute parameters for interactions between i and j atoms */
283 gmx_fjsp_load_1pair_swizzle_v2r8(vdwparam+vdwioffset0+vdwjidx0A,&c6_00,&c12_00);
285 /* LENNARD-JONES DISPERSION/REPULSION */
287 rinvsix = _fjsp_mul_v2r8(_fjsp_mul_v2r8(rinvsq00,rinvsq00),rinvsq00);
288 vvdw6 = _fjsp_mul_v2r8(c6_00,rinvsix);
289 vvdw12 = _fjsp_mul_v2r8(c12_00,_fjsp_mul_v2r8(rinvsix,rinvsix));
290 vvdw = _fjsp_msub_v2r8( vvdw12,one_twelfth, _fjsp_mul_v2r8(vvdw6,one_sixth) );
291 fvdw = _fjsp_mul_v2r8(_fjsp_sub_v2r8(vvdw12,vvdw6),rinvsq00);
293 d = _fjsp_sub_v2r8(r00,rswitch);
294 d = _fjsp_max_v2r8(d,_fjsp_setzero_v2r8());
295 d2 = _fjsp_mul_v2r8(d,d);
296 sw = _fjsp_add_v2r8(one,_fjsp_mul_v2r8(d2,_fjsp_mul_v2r8(d,_fjsp_madd_v2r8(d,_fjsp_madd_v2r8(d,swV5,swV4),swV3))));
298 dsw = _fjsp_mul_v2r8(d2,_fjsp_madd_v2r8(d,_fjsp_madd_v2r8(d,swF4,swF3),swF2));
300 /* Evaluate switch function */
301 /* fscal'=f'/r=-(v*sw)'/r=-(v'*sw+v*dsw)/r=-v'*sw/r-v*dsw/r=fscal*sw-v*dsw/r */
302 fvdw = _fjsp_msub_v2r8( fvdw,sw , _fjsp_mul_v2r8(rinv00,_fjsp_mul_v2r8(vvdw,dsw)) );
303 vvdw = _fjsp_mul_v2r8(vvdw,sw);
304 cutoff_mask = _fjsp_cmplt_v2r8(rsq00,rcutoff2);
306 /* Update potential sum for this i atom from the interaction with this j atom. */
307 vvdw = _fjsp_and_v2r8(vvdw,cutoff_mask);
308 vvdw = _fjsp_unpacklo_v2r8(vvdw,_fjsp_setzero_v2r8());
309 vvdwsum = _fjsp_add_v2r8(vvdwsum,vvdw);
313 fscal = _fjsp_and_v2r8(fscal,cutoff_mask);
315 fscal = _fjsp_unpacklo_v2r8(fscal,_fjsp_setzero_v2r8());
317 /* Update vectorial force */
318 fix0 = _fjsp_madd_v2r8(dx00,fscal,fix0);
319 fiy0 = _fjsp_madd_v2r8(dy00,fscal,fiy0);
320 fiz0 = _fjsp_madd_v2r8(dz00,fscal,fiz0);
322 gmx_fjsp_decrement_fma_1rvec_1ptr_swizzle_v2r8(f+j_coord_offsetA,fscal,dx00,dy00,dz00);
326 /* Inner loop uses 62 flops */
329 /* End of innermost loop */
331 gmx_fjsp_update_iforce_1atom_swizzle_v2r8(fix0,fiy0,fiz0,
332 f+i_coord_offset,fshift+i_shift_offset);
335 /* Update potential energies */
336 gmx_fjsp_update_1pot_v2r8(vvdwsum,kernel_data->energygrp_vdw+ggid);
338 /* Increment number of inner iterations */
339 inneriter += j_index_end - j_index_start;
341 /* Outer loop uses 7 flops */
344 /* Increment number of outer iterations */
347 /* Update outer/inner flops */
349 inc_nrnb(nrnb,eNR_NBKERNEL_VDW_VF,outeriter*7 + inneriter*62);
352 * Gromacs nonbonded kernel: nb_kernel_ElecNone_VdwLJSw_GeomP1P1_F_sparc64_hpc_ace_double
353 * Electrostatics interaction: None
354 * VdW interaction: LennardJones
355 * Geometry: Particle-Particle
356 * Calculate force/pot: Force
359 nb_kernel_ElecNone_VdwLJSw_GeomP1P1_F_sparc64_hpc_ace_double
360 (t_nblist * gmx_restrict nlist,
361 rvec * gmx_restrict xx,
362 rvec * gmx_restrict ff,
363 t_forcerec * gmx_restrict fr,
364 t_mdatoms * gmx_restrict mdatoms,
365 nb_kernel_data_t gmx_unused * gmx_restrict kernel_data,
366 t_nrnb * gmx_restrict nrnb)
368 /* Suffixes 0,1,2,3 refer to particle indices for waters in the inner or outer loop, or
369 * just 0 for non-waters.
370 * Suffixes A,B refer to j loop unrolling done with double precision SIMD, e.g. for the two different
371 * jnr indices corresponding to data put in the four positions in the SIMD register.
373 int i_shift_offset,i_coord_offset,outeriter,inneriter;
374 int j_index_start,j_index_end,jidx,nri,inr,ggid,iidx;
376 int j_coord_offsetA,j_coord_offsetB;
377 int *iinr,*jindex,*jjnr,*shiftidx,*gid;
379 real *shiftvec,*fshift,*x,*f;
380 _fjsp_v2r8 tx,ty,tz,fscal,rcutoff,rcutoff2,jidxall;
382 _fjsp_v2r8 ix0,iy0,iz0,fix0,fiy0,fiz0,iq0,isai0;
383 int vdwjidx0A,vdwjidx0B;
384 _fjsp_v2r8 jx0,jy0,jz0,fjx0,fjy0,fjz0,jq0,isaj0;
385 _fjsp_v2r8 dx00,dy00,dz00,rsq00,rinv00,rinvsq00,r00,qq00,c6_00,c12_00;
387 _fjsp_v2r8 rinvsix,rvdw,vvdw,vvdw6,vvdw12,fvdw,fvdw6,fvdw12,vvdwsum,sh_vdw_invrcut6;
390 _fjsp_v2r8 one_sixth = gmx_fjsp_set1_v2r8(1.0/6.0);
391 _fjsp_v2r8 one_twelfth = gmx_fjsp_set1_v2r8(1.0/12.0);
392 _fjsp_v2r8 rswitch,swV3,swV4,swV5,swF2,swF3,swF4,d,d2,sw,dsw;
393 real rswitch_scalar,d_scalar;
395 _fjsp_v2r8 dummy_mask,cutoff_mask;
396 _fjsp_v2r8 one = gmx_fjsp_set1_v2r8(1.0);
397 _fjsp_v2r8 two = gmx_fjsp_set1_v2r8(2.0);
398 union { _fjsp_v2r8 simd; long long int i[2]; } vfconv,gbconv,ewconv;
405 jindex = nlist->jindex;
407 shiftidx = nlist->shift;
409 shiftvec = fr->shift_vec[0];
410 fshift = fr->fshift[0];
411 nvdwtype = fr->ntype;
413 vdwtype = mdatoms->typeA;
415 rcutoff_scalar = fr->rvdw;
416 rcutoff = gmx_fjsp_set1_v2r8(rcutoff_scalar);
417 rcutoff2 = _fjsp_mul_v2r8(rcutoff,rcutoff);
419 rswitch_scalar = fr->rvdw_switch;
420 rswitch = gmx_fjsp_set1_v2r8(rswitch_scalar);
421 /* Setup switch parameters */
422 d_scalar = rcutoff_scalar-rswitch_scalar;
423 d = gmx_fjsp_set1_v2r8(d_scalar);
424 swV3 = gmx_fjsp_set1_v2r8(-10.0/(d_scalar*d_scalar*d_scalar));
425 swV4 = gmx_fjsp_set1_v2r8( 15.0/(d_scalar*d_scalar*d_scalar*d_scalar));
426 swV5 = gmx_fjsp_set1_v2r8( -6.0/(d_scalar*d_scalar*d_scalar*d_scalar*d_scalar));
427 swF2 = gmx_fjsp_set1_v2r8(-30.0/(d_scalar*d_scalar*d_scalar));
428 swF3 = gmx_fjsp_set1_v2r8( 60.0/(d_scalar*d_scalar*d_scalar*d_scalar));
429 swF4 = gmx_fjsp_set1_v2r8(-30.0/(d_scalar*d_scalar*d_scalar*d_scalar*d_scalar));
431 /* Avoid stupid compiler warnings */
439 /* Start outer loop over neighborlists */
440 for(iidx=0; iidx<nri; iidx++)
442 /* Load shift vector for this list */
443 i_shift_offset = DIM*shiftidx[iidx];
445 /* Load limits for loop over neighbors */
446 j_index_start = jindex[iidx];
447 j_index_end = jindex[iidx+1];
449 /* Get outer coordinate index */
451 i_coord_offset = DIM*inr;
453 /* Load i particle coords and add shift vector */
454 gmx_fjsp_load_shift_and_1rvec_broadcast_v2r8(shiftvec+i_shift_offset,x+i_coord_offset,&ix0,&iy0,&iz0);
456 fix0 = _fjsp_setzero_v2r8();
457 fiy0 = _fjsp_setzero_v2r8();
458 fiz0 = _fjsp_setzero_v2r8();
460 /* Load parameters for i particles */
461 vdwioffset0 = 2*nvdwtype*vdwtype[inr+0];
463 /* Start inner kernel loop */
464 for(jidx=j_index_start; jidx<j_index_end-1; jidx+=2)
467 /* Get j neighbor index, and coordinate index */
470 j_coord_offsetA = DIM*jnrA;
471 j_coord_offsetB = DIM*jnrB;
473 /* load j atom coordinates */
474 gmx_fjsp_load_1rvec_2ptr_swizzle_v2r8(x+j_coord_offsetA,x+j_coord_offsetB,
477 /* Calculate displacement vector */
478 dx00 = _fjsp_sub_v2r8(ix0,jx0);
479 dy00 = _fjsp_sub_v2r8(iy0,jy0);
480 dz00 = _fjsp_sub_v2r8(iz0,jz0);
482 /* Calculate squared distance and things based on it */
483 rsq00 = gmx_fjsp_calc_rsq_v2r8(dx00,dy00,dz00);
485 rinv00 = gmx_fjsp_invsqrt_v2r8(rsq00);
487 rinvsq00 = _fjsp_mul_v2r8(rinv00,rinv00);
489 /* Load parameters for j particles */
490 vdwjidx0A = 2*vdwtype[jnrA+0];
491 vdwjidx0B = 2*vdwtype[jnrB+0];
493 /**************************
494 * CALCULATE INTERACTIONS *
495 **************************/
497 if (gmx_fjsp_any_lt_v2r8(rsq00,rcutoff2))
500 r00 = _fjsp_mul_v2r8(rsq00,rinv00);
502 /* Compute parameters for interactions between i and j atoms */
503 gmx_fjsp_load_2pair_swizzle_v2r8(vdwparam+vdwioffset0+vdwjidx0A,
504 vdwparam+vdwioffset0+vdwjidx0B,&c6_00,&c12_00);
506 /* LENNARD-JONES DISPERSION/REPULSION */
508 rinvsix = _fjsp_mul_v2r8(_fjsp_mul_v2r8(rinvsq00,rinvsq00),rinvsq00);
509 vvdw6 = _fjsp_mul_v2r8(c6_00,rinvsix);
510 vvdw12 = _fjsp_mul_v2r8(c12_00,_fjsp_mul_v2r8(rinvsix,rinvsix));
511 vvdw = _fjsp_msub_v2r8( vvdw12,one_twelfth, _fjsp_mul_v2r8(vvdw6,one_sixth) );
512 fvdw = _fjsp_mul_v2r8(_fjsp_sub_v2r8(vvdw12,vvdw6),rinvsq00);
514 d = _fjsp_sub_v2r8(r00,rswitch);
515 d = _fjsp_max_v2r8(d,_fjsp_setzero_v2r8());
516 d2 = _fjsp_mul_v2r8(d,d);
517 sw = _fjsp_add_v2r8(one,_fjsp_mul_v2r8(d2,_fjsp_mul_v2r8(d,_fjsp_madd_v2r8(d,_fjsp_madd_v2r8(d,swV5,swV4),swV3))));
519 dsw = _fjsp_mul_v2r8(d2,_fjsp_madd_v2r8(d,_fjsp_madd_v2r8(d,swF4,swF3),swF2));
521 /* Evaluate switch function */
522 /* fscal'=f'/r=-(v*sw)'/r=-(v'*sw+v*dsw)/r=-v'*sw/r-v*dsw/r=fscal*sw-v*dsw/r */
523 fvdw = _fjsp_msub_v2r8( fvdw,sw , _fjsp_mul_v2r8(rinv00,_fjsp_mul_v2r8(vvdw,dsw)) );
524 cutoff_mask = _fjsp_cmplt_v2r8(rsq00,rcutoff2);
528 fscal = _fjsp_and_v2r8(fscal,cutoff_mask);
530 /* Update vectorial force */
531 fix0 = _fjsp_madd_v2r8(dx00,fscal,fix0);
532 fiy0 = _fjsp_madd_v2r8(dy00,fscal,fiy0);
533 fiz0 = _fjsp_madd_v2r8(dz00,fscal,fiz0);
535 gmx_fjsp_decrement_fma_1rvec_2ptr_swizzle_v2r8(f+j_coord_offsetA,f+j_coord_offsetB,fscal,dx00,dy00,dz00);
539 /* Inner loop uses 59 flops */
546 j_coord_offsetA = DIM*jnrA;
548 /* load j atom coordinates */
549 gmx_fjsp_load_1rvec_1ptr_swizzle_v2r8(x+j_coord_offsetA,
552 /* Calculate displacement vector */
553 dx00 = _fjsp_sub_v2r8(ix0,jx0);
554 dy00 = _fjsp_sub_v2r8(iy0,jy0);
555 dz00 = _fjsp_sub_v2r8(iz0,jz0);
557 /* Calculate squared distance and things based on it */
558 rsq00 = gmx_fjsp_calc_rsq_v2r8(dx00,dy00,dz00);
560 rinv00 = gmx_fjsp_invsqrt_v2r8(rsq00);
562 rinvsq00 = _fjsp_mul_v2r8(rinv00,rinv00);
564 /* Load parameters for j particles */
565 vdwjidx0A = 2*vdwtype[jnrA+0];
567 /**************************
568 * CALCULATE INTERACTIONS *
569 **************************/
571 if (gmx_fjsp_any_lt_v2r8(rsq00,rcutoff2))
574 r00 = _fjsp_mul_v2r8(rsq00,rinv00);
576 /* Compute parameters for interactions between i and j atoms */
577 gmx_fjsp_load_1pair_swizzle_v2r8(vdwparam+vdwioffset0+vdwjidx0A,&c6_00,&c12_00);
579 /* LENNARD-JONES DISPERSION/REPULSION */
581 rinvsix = _fjsp_mul_v2r8(_fjsp_mul_v2r8(rinvsq00,rinvsq00),rinvsq00);
582 vvdw6 = _fjsp_mul_v2r8(c6_00,rinvsix);
583 vvdw12 = _fjsp_mul_v2r8(c12_00,_fjsp_mul_v2r8(rinvsix,rinvsix));
584 vvdw = _fjsp_msub_v2r8( vvdw12,one_twelfth, _fjsp_mul_v2r8(vvdw6,one_sixth) );
585 fvdw = _fjsp_mul_v2r8(_fjsp_sub_v2r8(vvdw12,vvdw6),rinvsq00);
587 d = _fjsp_sub_v2r8(r00,rswitch);
588 d = _fjsp_max_v2r8(d,_fjsp_setzero_v2r8());
589 d2 = _fjsp_mul_v2r8(d,d);
590 sw = _fjsp_add_v2r8(one,_fjsp_mul_v2r8(d2,_fjsp_mul_v2r8(d,_fjsp_madd_v2r8(d,_fjsp_madd_v2r8(d,swV5,swV4),swV3))));
592 dsw = _fjsp_mul_v2r8(d2,_fjsp_madd_v2r8(d,_fjsp_madd_v2r8(d,swF4,swF3),swF2));
594 /* Evaluate switch function */
595 /* fscal'=f'/r=-(v*sw)'/r=-(v'*sw+v*dsw)/r=-v'*sw/r-v*dsw/r=fscal*sw-v*dsw/r */
596 fvdw = _fjsp_msub_v2r8( fvdw,sw , _fjsp_mul_v2r8(rinv00,_fjsp_mul_v2r8(vvdw,dsw)) );
597 cutoff_mask = _fjsp_cmplt_v2r8(rsq00,rcutoff2);
601 fscal = _fjsp_and_v2r8(fscal,cutoff_mask);
603 fscal = _fjsp_unpacklo_v2r8(fscal,_fjsp_setzero_v2r8());
605 /* Update vectorial force */
606 fix0 = _fjsp_madd_v2r8(dx00,fscal,fix0);
607 fiy0 = _fjsp_madd_v2r8(dy00,fscal,fiy0);
608 fiz0 = _fjsp_madd_v2r8(dz00,fscal,fiz0);
610 gmx_fjsp_decrement_fma_1rvec_1ptr_swizzle_v2r8(f+j_coord_offsetA,fscal,dx00,dy00,dz00);
614 /* Inner loop uses 59 flops */
617 /* End of innermost loop */
619 gmx_fjsp_update_iforce_1atom_swizzle_v2r8(fix0,fiy0,fiz0,
620 f+i_coord_offset,fshift+i_shift_offset);
622 /* Increment number of inner iterations */
623 inneriter += j_index_end - j_index_start;
625 /* Outer loop uses 6 flops */
628 /* Increment number of outer iterations */
631 /* Update outer/inner flops */
633 inc_nrnb(nrnb,eNR_NBKERNEL_VDW_F,outeriter*6 + inneriter*59);