Bug Summary

File:gromacs/gmxlib/nonbonded/nb_kernel_c/nb_kernel_ElecCoul_VdwLJ_GeomW4W4_c.c
Location:line 661, column 5
Description:Value stored to 'gid' is never read

Annotated Source Code

1/*
2 * This file is part of the GROMACS molecular simulation package.
3 *
4 * Copyright (c) 2012,2013,2014, by the GROMACS development team, led by
5 * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
6 * and including many others, as listed in the AUTHORS file in the
7 * top-level source directory and at http://www.gromacs.org.
8 *
9 * GROMACS is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public License
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12 * of the License, or (at your option) any later version.
13 *
14 * GROMACS is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
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34 */
35/*
36 * Note: this file was generated by the GROMACS c kernel generator.
37 */
38#ifdef HAVE_CONFIG_H1
39#include <config.h>
40#endif
41
42#include <math.h>
43
44#include "../nb_kernel.h"
45#include "types/simple.h"
46#include "gromacs/math/vec.h"
47#include "nrnb.h"
48
49/*
50 * Gromacs nonbonded kernel: nb_kernel_ElecCoul_VdwLJ_GeomW4W4_VF_c
51 * Electrostatics interaction: Coulomb
52 * VdW interaction: LennardJones
53 * Geometry: Water4-Water4
54 * Calculate force/pot: PotentialAndForce
55 */
56void
57nb_kernel_ElecCoul_VdwLJ_GeomW4W4_VF_c
58 (t_nblist * gmx_restrict__restrict nlist,
59 rvec * gmx_restrict__restrict xx,
60 rvec * gmx_restrict__restrict ff,
61 t_forcerec * gmx_restrict__restrict fr,
62 t_mdatoms * gmx_restrict__restrict mdatoms,
63 nb_kernel_data_t gmx_unused__attribute__ ((unused)) * gmx_restrict__restrict kernel_data,
64 t_nrnb * gmx_restrict__restrict nrnb)
65{
66 int i_shift_offset,i_coord_offset,j_coord_offset;
67 int j_index_start,j_index_end;
68 int nri,inr,ggid,iidx,jidx,jnr,outeriter,inneriter;
69 real shX,shY,shZ,tx,ty,tz,fscal,rcutoff,rcutoff2;
70 int *iinr,*jindex,*jjnr,*shiftidx,*gid;
71 real *shiftvec,*fshift,*x,*f;
72 int vdwioffset0;
73 real ix0,iy0,iz0,fix0,fiy0,fiz0,iq0,isai0;
74 int vdwioffset1;
75 real ix1,iy1,iz1,fix1,fiy1,fiz1,iq1,isai1;
76 int vdwioffset2;
77 real ix2,iy2,iz2,fix2,fiy2,fiz2,iq2,isai2;
78 int vdwioffset3;
79 real ix3,iy3,iz3,fix3,fiy3,fiz3,iq3,isai3;
80 int vdwjidx0;
81 real jx0,jy0,jz0,fjx0,fjy0,fjz0,jq0,isaj0;
82 int vdwjidx1;
83 real jx1,jy1,jz1,fjx1,fjy1,fjz1,jq1,isaj1;
84 int vdwjidx2;
85 real jx2,jy2,jz2,fjx2,fjy2,fjz2,jq2,isaj2;
86 int vdwjidx3;
87 real jx3,jy3,jz3,fjx3,fjy3,fjz3,jq3,isaj3;
88 real dx00,dy00,dz00,rsq00,rinv00,rinvsq00,r00,qq00,c6_00,c12_00,cexp1_00,cexp2_00;
89 real dx11,dy11,dz11,rsq11,rinv11,rinvsq11,r11,qq11,c6_11,c12_11,cexp1_11,cexp2_11;
90 real dx12,dy12,dz12,rsq12,rinv12,rinvsq12,r12,qq12,c6_12,c12_12,cexp1_12,cexp2_12;
91 real dx13,dy13,dz13,rsq13,rinv13,rinvsq13,r13,qq13,c6_13,c12_13,cexp1_13,cexp2_13;
92 real dx21,dy21,dz21,rsq21,rinv21,rinvsq21,r21,qq21,c6_21,c12_21,cexp1_21,cexp2_21;
93 real dx22,dy22,dz22,rsq22,rinv22,rinvsq22,r22,qq22,c6_22,c12_22,cexp1_22,cexp2_22;
94 real dx23,dy23,dz23,rsq23,rinv23,rinvsq23,r23,qq23,c6_23,c12_23,cexp1_23,cexp2_23;
95 real dx31,dy31,dz31,rsq31,rinv31,rinvsq31,r31,qq31,c6_31,c12_31,cexp1_31,cexp2_31;
96 real dx32,dy32,dz32,rsq32,rinv32,rinvsq32,r32,qq32,c6_32,c12_32,cexp1_32,cexp2_32;
97 real dx33,dy33,dz33,rsq33,rinv33,rinvsq33,r33,qq33,c6_33,c12_33,cexp1_33,cexp2_33;
98 real velec,felec,velecsum,facel,crf,krf,krf2;
99 real *charge;
100 int nvdwtype;
101 real rinvsix,rvdw,vvdw,vvdw6,vvdw12,fvdw,fvdw6,fvdw12,vvdwsum,br,vvdwexp,sh_vdw_invrcut6;
102 int *vdwtype;
103 real *vdwparam;
104
105 x = xx[0];
106 f = ff[0];
107
108 nri = nlist->nri;
109 iinr = nlist->iinr;
110 jindex = nlist->jindex;
111 jjnr = nlist->jjnr;
112 shiftidx = nlist->shift;
113 gid = nlist->gid;
114 shiftvec = fr->shift_vec[0];
115 fshift = fr->fshift[0];
116 facel = fr->epsfac;
117 charge = mdatoms->chargeA;
118 nvdwtype = fr->ntype;
119 vdwparam = fr->nbfp;
120 vdwtype = mdatoms->typeA;
121
122 /* Setup water-specific parameters */
123 inr = nlist->iinr[0];
124 iq1 = facel*charge[inr+1];
125 iq2 = facel*charge[inr+2];
126 iq3 = facel*charge[inr+3];
127 vdwioffset0 = 2*nvdwtype*vdwtype[inr+0];
128
129 jq1 = charge[inr+1];
130 jq2 = charge[inr+2];
131 jq3 = charge[inr+3];
132 vdwjidx0 = 2*vdwtype[inr+0];
133 c6_00 = vdwparam[vdwioffset0+vdwjidx0];
134 c12_00 = vdwparam[vdwioffset0+vdwjidx0+1];
135 qq11 = iq1*jq1;
136 qq12 = iq1*jq2;
137 qq13 = iq1*jq3;
138 qq21 = iq2*jq1;
139 qq22 = iq2*jq2;
140 qq23 = iq2*jq3;
141 qq31 = iq3*jq1;
142 qq32 = iq3*jq2;
143 qq33 = iq3*jq3;
144
145 outeriter = 0;
146 inneriter = 0;
147
148 /* Start outer loop over neighborlists */
149 for(iidx=0; iidx<nri; iidx++)
150 {
151 /* Load shift vector for this list */
152 i_shift_offset = DIM3*shiftidx[iidx];
153 shX = shiftvec[i_shift_offset+XX0];
154 shY = shiftvec[i_shift_offset+YY1];
155 shZ = shiftvec[i_shift_offset+ZZ2];
156
157 /* Load limits for loop over neighbors */
158 j_index_start = jindex[iidx];
159 j_index_end = jindex[iidx+1];
160
161 /* Get outer coordinate index */
162 inr = iinr[iidx];
163 i_coord_offset = DIM3*inr;
164
165 /* Load i particle coords and add shift vector */
166 ix0 = shX + x[i_coord_offset+DIM3*0+XX0];
167 iy0 = shY + x[i_coord_offset+DIM3*0+YY1];
168 iz0 = shZ + x[i_coord_offset+DIM3*0+ZZ2];
169 ix1 = shX + x[i_coord_offset+DIM3*1+XX0];
170 iy1 = shY + x[i_coord_offset+DIM3*1+YY1];
171 iz1 = shZ + x[i_coord_offset+DIM3*1+ZZ2];
172 ix2 = shX + x[i_coord_offset+DIM3*2+XX0];
173 iy2 = shY + x[i_coord_offset+DIM3*2+YY1];
174 iz2 = shZ + x[i_coord_offset+DIM3*2+ZZ2];
175 ix3 = shX + x[i_coord_offset+DIM3*3+XX0];
176 iy3 = shY + x[i_coord_offset+DIM3*3+YY1];
177 iz3 = shZ + x[i_coord_offset+DIM3*3+ZZ2];
178
179 fix0 = 0.0;
180 fiy0 = 0.0;
181 fiz0 = 0.0;
182 fix1 = 0.0;
183 fiy1 = 0.0;
184 fiz1 = 0.0;
185 fix2 = 0.0;
186 fiy2 = 0.0;
187 fiz2 = 0.0;
188 fix3 = 0.0;
189 fiy3 = 0.0;
190 fiz3 = 0.0;
191
192 /* Reset potential sums */
193 velecsum = 0.0;
194 vvdwsum = 0.0;
195
196 /* Start inner kernel loop */
197 for(jidx=j_index_start; jidx<j_index_end; jidx++)
198 {
199 /* Get j neighbor index, and coordinate index */
200 jnr = jjnr[jidx];
201 j_coord_offset = DIM3*jnr;
202
203 /* load j atom coordinates */
204 jx0 = x[j_coord_offset+DIM3*0+XX0];
205 jy0 = x[j_coord_offset+DIM3*0+YY1];
206 jz0 = x[j_coord_offset+DIM3*0+ZZ2];
207 jx1 = x[j_coord_offset+DIM3*1+XX0];
208 jy1 = x[j_coord_offset+DIM3*1+YY1];
209 jz1 = x[j_coord_offset+DIM3*1+ZZ2];
210 jx2 = x[j_coord_offset+DIM3*2+XX0];
211 jy2 = x[j_coord_offset+DIM3*2+YY1];
212 jz2 = x[j_coord_offset+DIM3*2+ZZ2];
213 jx3 = x[j_coord_offset+DIM3*3+XX0];
214 jy3 = x[j_coord_offset+DIM3*3+YY1];
215 jz3 = x[j_coord_offset+DIM3*3+ZZ2];
216
217 /* Calculate displacement vector */
218 dx00 = ix0 - jx0;
219 dy00 = iy0 - jy0;
220 dz00 = iz0 - jz0;
221 dx11 = ix1 - jx1;
222 dy11 = iy1 - jy1;
223 dz11 = iz1 - jz1;
224 dx12 = ix1 - jx2;
225 dy12 = iy1 - jy2;
226 dz12 = iz1 - jz2;
227 dx13 = ix1 - jx3;
228 dy13 = iy1 - jy3;
229 dz13 = iz1 - jz3;
230 dx21 = ix2 - jx1;
231 dy21 = iy2 - jy1;
232 dz21 = iz2 - jz1;
233 dx22 = ix2 - jx2;
234 dy22 = iy2 - jy2;
235 dz22 = iz2 - jz2;
236 dx23 = ix2 - jx3;
237 dy23 = iy2 - jy3;
238 dz23 = iz2 - jz3;
239 dx31 = ix3 - jx1;
240 dy31 = iy3 - jy1;
241 dz31 = iz3 - jz1;
242 dx32 = ix3 - jx2;
243 dy32 = iy3 - jy2;
244 dz32 = iz3 - jz2;
245 dx33 = ix3 - jx3;
246 dy33 = iy3 - jy3;
247 dz33 = iz3 - jz3;
248
249 /* Calculate squared distance and things based on it */
250 rsq00 = dx00*dx00+dy00*dy00+dz00*dz00;
251 rsq11 = dx11*dx11+dy11*dy11+dz11*dz11;
252 rsq12 = dx12*dx12+dy12*dy12+dz12*dz12;
253 rsq13 = dx13*dx13+dy13*dy13+dz13*dz13;
254 rsq21 = dx21*dx21+dy21*dy21+dz21*dz21;
255 rsq22 = dx22*dx22+dy22*dy22+dz22*dz22;
256 rsq23 = dx23*dx23+dy23*dy23+dz23*dz23;
257 rsq31 = dx31*dx31+dy31*dy31+dz31*dz31;
258 rsq32 = dx32*dx32+dy32*dy32+dz32*dz32;
259 rsq33 = dx33*dx33+dy33*dy33+dz33*dz33;
260
261 rinv11 = gmx_invsqrt(rsq11)gmx_software_invsqrt(rsq11);
262 rinv12 = gmx_invsqrt(rsq12)gmx_software_invsqrt(rsq12);
263 rinv13 = gmx_invsqrt(rsq13)gmx_software_invsqrt(rsq13);
264 rinv21 = gmx_invsqrt(rsq21)gmx_software_invsqrt(rsq21);
265 rinv22 = gmx_invsqrt(rsq22)gmx_software_invsqrt(rsq22);
266 rinv23 = gmx_invsqrt(rsq23)gmx_software_invsqrt(rsq23);
267 rinv31 = gmx_invsqrt(rsq31)gmx_software_invsqrt(rsq31);
268 rinv32 = gmx_invsqrt(rsq32)gmx_software_invsqrt(rsq32);
269 rinv33 = gmx_invsqrt(rsq33)gmx_software_invsqrt(rsq33);
270
271 rinvsq00 = 1.0/rsq00;
272 rinvsq11 = rinv11*rinv11;
273 rinvsq12 = rinv12*rinv12;
274 rinvsq13 = rinv13*rinv13;
275 rinvsq21 = rinv21*rinv21;
276 rinvsq22 = rinv22*rinv22;
277 rinvsq23 = rinv23*rinv23;
278 rinvsq31 = rinv31*rinv31;
279 rinvsq32 = rinv32*rinv32;
280 rinvsq33 = rinv33*rinv33;
281
282 /**************************
283 * CALCULATE INTERACTIONS *
284 **************************/
285
286 /* LENNARD-JONES DISPERSION/REPULSION */
287
288 rinvsix = rinvsq00*rinvsq00*rinvsq00;
289 vvdw6 = c6_00*rinvsix;
290 vvdw12 = c12_00*rinvsix*rinvsix;
291 vvdw = vvdw12*(1.0/12.0) - vvdw6*(1.0/6.0);
292 fvdw = (vvdw12-vvdw6)*rinvsq00;
293
294 /* Update potential sums from outer loop */
295 vvdwsum += vvdw;
296
297 fscal = fvdw;
298
299 /* Calculate temporary vectorial force */
300 tx = fscal*dx00;
301 ty = fscal*dy00;
302 tz = fscal*dz00;
303
304 /* Update vectorial force */
305 fix0 += tx;
306 fiy0 += ty;
307 fiz0 += tz;
308 f[j_coord_offset+DIM3*0+XX0] -= tx;
309 f[j_coord_offset+DIM3*0+YY1] -= ty;
310 f[j_coord_offset+DIM3*0+ZZ2] -= tz;
311
312 /**************************
313 * CALCULATE INTERACTIONS *
314 **************************/
315
316 /* COULOMB ELECTROSTATICS */
317 velec = qq11*rinv11;
318 felec = velec*rinvsq11;
319
320 /* Update potential sums from outer loop */
321 velecsum += velec;
322
323 fscal = felec;
324
325 /* Calculate temporary vectorial force */
326 tx = fscal*dx11;
327 ty = fscal*dy11;
328 tz = fscal*dz11;
329
330 /* Update vectorial force */
331 fix1 += tx;
332 fiy1 += ty;
333 fiz1 += tz;
334 f[j_coord_offset+DIM3*1+XX0] -= tx;
335 f[j_coord_offset+DIM3*1+YY1] -= ty;
336 f[j_coord_offset+DIM3*1+ZZ2] -= tz;
337
338 /**************************
339 * CALCULATE INTERACTIONS *
340 **************************/
341
342 /* COULOMB ELECTROSTATICS */
343 velec = qq12*rinv12;
344 felec = velec*rinvsq12;
345
346 /* Update potential sums from outer loop */
347 velecsum += velec;
348
349 fscal = felec;
350
351 /* Calculate temporary vectorial force */
352 tx = fscal*dx12;
353 ty = fscal*dy12;
354 tz = fscal*dz12;
355
356 /* Update vectorial force */
357 fix1 += tx;
358 fiy1 += ty;
359 fiz1 += tz;
360 f[j_coord_offset+DIM3*2+XX0] -= tx;
361 f[j_coord_offset+DIM3*2+YY1] -= ty;
362 f[j_coord_offset+DIM3*2+ZZ2] -= tz;
363
364 /**************************
365 * CALCULATE INTERACTIONS *
366 **************************/
367
368 /* COULOMB ELECTROSTATICS */
369 velec = qq13*rinv13;
370 felec = velec*rinvsq13;
371
372 /* Update potential sums from outer loop */
373 velecsum += velec;
374
375 fscal = felec;
376
377 /* Calculate temporary vectorial force */
378 tx = fscal*dx13;
379 ty = fscal*dy13;
380 tz = fscal*dz13;
381
382 /* Update vectorial force */
383 fix1 += tx;
384 fiy1 += ty;
385 fiz1 += tz;
386 f[j_coord_offset+DIM3*3+XX0] -= tx;
387 f[j_coord_offset+DIM3*3+YY1] -= ty;
388 f[j_coord_offset+DIM3*3+ZZ2] -= tz;
389
390 /**************************
391 * CALCULATE INTERACTIONS *
392 **************************/
393
394 /* COULOMB ELECTROSTATICS */
395 velec = qq21*rinv21;
396 felec = velec*rinvsq21;
397
398 /* Update potential sums from outer loop */
399 velecsum += velec;
400
401 fscal = felec;
402
403 /* Calculate temporary vectorial force */
404 tx = fscal*dx21;
405 ty = fscal*dy21;
406 tz = fscal*dz21;
407
408 /* Update vectorial force */
409 fix2 += tx;
410 fiy2 += ty;
411 fiz2 += tz;
412 f[j_coord_offset+DIM3*1+XX0] -= tx;
413 f[j_coord_offset+DIM3*1+YY1] -= ty;
414 f[j_coord_offset+DIM3*1+ZZ2] -= tz;
415
416 /**************************
417 * CALCULATE INTERACTIONS *
418 **************************/
419
420 /* COULOMB ELECTROSTATICS */
421 velec = qq22*rinv22;
422 felec = velec*rinvsq22;
423
424 /* Update potential sums from outer loop */
425 velecsum += velec;
426
427 fscal = felec;
428
429 /* Calculate temporary vectorial force */
430 tx = fscal*dx22;
431 ty = fscal*dy22;
432 tz = fscal*dz22;
433
434 /* Update vectorial force */
435 fix2 += tx;
436 fiy2 += ty;
437 fiz2 += tz;
438 f[j_coord_offset+DIM3*2+XX0] -= tx;
439 f[j_coord_offset+DIM3*2+YY1] -= ty;
440 f[j_coord_offset+DIM3*2+ZZ2] -= tz;
441
442 /**************************
443 * CALCULATE INTERACTIONS *
444 **************************/
445
446 /* COULOMB ELECTROSTATICS */
447 velec = qq23*rinv23;
448 felec = velec*rinvsq23;
449
450 /* Update potential sums from outer loop */
451 velecsum += velec;
452
453 fscal = felec;
454
455 /* Calculate temporary vectorial force */
456 tx = fscal*dx23;
457 ty = fscal*dy23;
458 tz = fscal*dz23;
459
460 /* Update vectorial force */
461 fix2 += tx;
462 fiy2 += ty;
463 fiz2 += tz;
464 f[j_coord_offset+DIM3*3+XX0] -= tx;
465 f[j_coord_offset+DIM3*3+YY1] -= ty;
466 f[j_coord_offset+DIM3*3+ZZ2] -= tz;
467
468 /**************************
469 * CALCULATE INTERACTIONS *
470 **************************/
471
472 /* COULOMB ELECTROSTATICS */
473 velec = qq31*rinv31;
474 felec = velec*rinvsq31;
475
476 /* Update potential sums from outer loop */
477 velecsum += velec;
478
479 fscal = felec;
480
481 /* Calculate temporary vectorial force */
482 tx = fscal*dx31;
483 ty = fscal*dy31;
484 tz = fscal*dz31;
485
486 /* Update vectorial force */
487 fix3 += tx;
488 fiy3 += ty;
489 fiz3 += tz;
490 f[j_coord_offset+DIM3*1+XX0] -= tx;
491 f[j_coord_offset+DIM3*1+YY1] -= ty;
492 f[j_coord_offset+DIM3*1+ZZ2] -= tz;
493
494 /**************************
495 * CALCULATE INTERACTIONS *
496 **************************/
497
498 /* COULOMB ELECTROSTATICS */
499 velec = qq32*rinv32;
500 felec = velec*rinvsq32;
501
502 /* Update potential sums from outer loop */
503 velecsum += velec;
504
505 fscal = felec;
506
507 /* Calculate temporary vectorial force */
508 tx = fscal*dx32;
509 ty = fscal*dy32;
510 tz = fscal*dz32;
511
512 /* Update vectorial force */
513 fix3 += tx;
514 fiy3 += ty;
515 fiz3 += tz;
516 f[j_coord_offset+DIM3*2+XX0] -= tx;
517 f[j_coord_offset+DIM3*2+YY1] -= ty;
518 f[j_coord_offset+DIM3*2+ZZ2] -= tz;
519
520 /**************************
521 * CALCULATE INTERACTIONS *
522 **************************/
523
524 /* COULOMB ELECTROSTATICS */
525 velec = qq33*rinv33;
526 felec = velec*rinvsq33;
527
528 /* Update potential sums from outer loop */
529 velecsum += velec;
530
531 fscal = felec;
532
533 /* Calculate temporary vectorial force */
534 tx = fscal*dx33;
535 ty = fscal*dy33;
536 tz = fscal*dz33;
537
538 /* Update vectorial force */
539 fix3 += tx;
540 fiy3 += ty;
541 fiz3 += tz;
542 f[j_coord_offset+DIM3*3+XX0] -= tx;
543 f[j_coord_offset+DIM3*3+YY1] -= ty;
544 f[j_coord_offset+DIM3*3+ZZ2] -= tz;
545
546 /* Inner loop uses 275 flops */
547 }
548 /* End of innermost loop */
549
550 tx = ty = tz = 0;
551 f[i_coord_offset+DIM3*0+XX0] += fix0;
552 f[i_coord_offset+DIM3*0+YY1] += fiy0;
553 f[i_coord_offset+DIM3*0+ZZ2] += fiz0;
554 tx += fix0;
555 ty += fiy0;
556 tz += fiz0;
557 f[i_coord_offset+DIM3*1+XX0] += fix1;
558 f[i_coord_offset+DIM3*1+YY1] += fiy1;
559 f[i_coord_offset+DIM3*1+ZZ2] += fiz1;
560 tx += fix1;
561 ty += fiy1;
562 tz += fiz1;
563 f[i_coord_offset+DIM3*2+XX0] += fix2;
564 f[i_coord_offset+DIM3*2+YY1] += fiy2;
565 f[i_coord_offset+DIM3*2+ZZ2] += fiz2;
566 tx += fix2;
567 ty += fiy2;
568 tz += fiz2;
569 f[i_coord_offset+DIM3*3+XX0] += fix3;
570 f[i_coord_offset+DIM3*3+YY1] += fiy3;
571 f[i_coord_offset+DIM3*3+ZZ2] += fiz3;
572 tx += fix3;
573 ty += fiy3;
574 tz += fiz3;
575 fshift[i_shift_offset+XX0] += tx;
576 fshift[i_shift_offset+YY1] += ty;
577 fshift[i_shift_offset+ZZ2] += tz;
578
579 ggid = gid[iidx];
580 /* Update potential energies */
581 kernel_data->energygrp_elec[ggid] += velecsum;
582 kernel_data->energygrp_vdw[ggid] += vvdwsum;
583
584 /* Increment number of inner iterations */
585 inneriter += j_index_end - j_index_start;
586
587 /* Outer loop uses 41 flops */
588 }
589
590 /* Increment number of outer iterations */
591 outeriter += nri;
592
593 /* Update outer/inner flops */
594
595 inc_nrnb(nrnb,eNR_NBKERNEL_ELEC_VDW_W4W4_VF,outeriter*41 + inneriter*275)(nrnb)->n[eNR_NBKERNEL_ELEC_VDW_W4W4_VF] += outeriter*41 +
inneriter*275
;
596}
597/*
598 * Gromacs nonbonded kernel: nb_kernel_ElecCoul_VdwLJ_GeomW4W4_F_c
599 * Electrostatics interaction: Coulomb
600 * VdW interaction: LennardJones
601 * Geometry: Water4-Water4
602 * Calculate force/pot: Force
603 */
604void
605nb_kernel_ElecCoul_VdwLJ_GeomW4W4_F_c
606 (t_nblist * gmx_restrict__restrict nlist,
607 rvec * gmx_restrict__restrict xx,
608 rvec * gmx_restrict__restrict ff,
609 t_forcerec * gmx_restrict__restrict fr,
610 t_mdatoms * gmx_restrict__restrict mdatoms,
611 nb_kernel_data_t gmx_unused__attribute__ ((unused)) * gmx_restrict__restrict kernel_data,
612 t_nrnb * gmx_restrict__restrict nrnb)
613{
614 int i_shift_offset,i_coord_offset,j_coord_offset;
615 int j_index_start,j_index_end;
616 int nri,inr,ggid,iidx,jidx,jnr,outeriter,inneriter;
617 real shX,shY,shZ,tx,ty,tz,fscal,rcutoff,rcutoff2;
618 int *iinr,*jindex,*jjnr,*shiftidx,*gid;
619 real *shiftvec,*fshift,*x,*f;
620 int vdwioffset0;
621 real ix0,iy0,iz0,fix0,fiy0,fiz0,iq0,isai0;
622 int vdwioffset1;
623 real ix1,iy1,iz1,fix1,fiy1,fiz1,iq1,isai1;
624 int vdwioffset2;
625 real ix2,iy2,iz2,fix2,fiy2,fiz2,iq2,isai2;
626 int vdwioffset3;
627 real ix3,iy3,iz3,fix3,fiy3,fiz3,iq3,isai3;
628 int vdwjidx0;
629 real jx0,jy0,jz0,fjx0,fjy0,fjz0,jq0,isaj0;
630 int vdwjidx1;
631 real jx1,jy1,jz1,fjx1,fjy1,fjz1,jq1,isaj1;
632 int vdwjidx2;
633 real jx2,jy2,jz2,fjx2,fjy2,fjz2,jq2,isaj2;
634 int vdwjidx3;
635 real jx3,jy3,jz3,fjx3,fjy3,fjz3,jq3,isaj3;
636 real dx00,dy00,dz00,rsq00,rinv00,rinvsq00,r00,qq00,c6_00,c12_00,cexp1_00,cexp2_00;
637 real dx11,dy11,dz11,rsq11,rinv11,rinvsq11,r11,qq11,c6_11,c12_11,cexp1_11,cexp2_11;
638 real dx12,dy12,dz12,rsq12,rinv12,rinvsq12,r12,qq12,c6_12,c12_12,cexp1_12,cexp2_12;
639 real dx13,dy13,dz13,rsq13,rinv13,rinvsq13,r13,qq13,c6_13,c12_13,cexp1_13,cexp2_13;
640 real dx21,dy21,dz21,rsq21,rinv21,rinvsq21,r21,qq21,c6_21,c12_21,cexp1_21,cexp2_21;
641 real dx22,dy22,dz22,rsq22,rinv22,rinvsq22,r22,qq22,c6_22,c12_22,cexp1_22,cexp2_22;
642 real dx23,dy23,dz23,rsq23,rinv23,rinvsq23,r23,qq23,c6_23,c12_23,cexp1_23,cexp2_23;
643 real dx31,dy31,dz31,rsq31,rinv31,rinvsq31,r31,qq31,c6_31,c12_31,cexp1_31,cexp2_31;
644 real dx32,dy32,dz32,rsq32,rinv32,rinvsq32,r32,qq32,c6_32,c12_32,cexp1_32,cexp2_32;
645 real dx33,dy33,dz33,rsq33,rinv33,rinvsq33,r33,qq33,c6_33,c12_33,cexp1_33,cexp2_33;
646 real velec,felec,velecsum,facel,crf,krf,krf2;
647 real *charge;
648 int nvdwtype;
649 real rinvsix,rvdw,vvdw,vvdw6,vvdw12,fvdw,fvdw6,fvdw12,vvdwsum,br,vvdwexp,sh_vdw_invrcut6;
650 int *vdwtype;
651 real *vdwparam;
652
653 x = xx[0];
654 f = ff[0];
655
656 nri = nlist->nri;
657 iinr = nlist->iinr;
658 jindex = nlist->jindex;
659 jjnr = nlist->jjnr;
660 shiftidx = nlist->shift;
661 gid = nlist->gid;
Value stored to 'gid' is never read
662 shiftvec = fr->shift_vec[0];
663 fshift = fr->fshift[0];
664 facel = fr->epsfac;
665 charge = mdatoms->chargeA;
666 nvdwtype = fr->ntype;
667 vdwparam = fr->nbfp;
668 vdwtype = mdatoms->typeA;
669
670 /* Setup water-specific parameters */
671 inr = nlist->iinr[0];
672 iq1 = facel*charge[inr+1];
673 iq2 = facel*charge[inr+2];
674 iq3 = facel*charge[inr+3];
675 vdwioffset0 = 2*nvdwtype*vdwtype[inr+0];
676
677 jq1 = charge[inr+1];
678 jq2 = charge[inr+2];
679 jq3 = charge[inr+3];
680 vdwjidx0 = 2*vdwtype[inr+0];
681 c6_00 = vdwparam[vdwioffset0+vdwjidx0];
682 c12_00 = vdwparam[vdwioffset0+vdwjidx0+1];
683 qq11 = iq1*jq1;
684 qq12 = iq1*jq2;
685 qq13 = iq1*jq3;
686 qq21 = iq2*jq1;
687 qq22 = iq2*jq2;
688 qq23 = iq2*jq3;
689 qq31 = iq3*jq1;
690 qq32 = iq3*jq2;
691 qq33 = iq3*jq3;
692
693 outeriter = 0;
694 inneriter = 0;
695
696 /* Start outer loop over neighborlists */
697 for(iidx=0; iidx<nri; iidx++)
698 {
699 /* Load shift vector for this list */
700 i_shift_offset = DIM3*shiftidx[iidx];
701 shX = shiftvec[i_shift_offset+XX0];
702 shY = shiftvec[i_shift_offset+YY1];
703 shZ = shiftvec[i_shift_offset+ZZ2];
704
705 /* Load limits for loop over neighbors */
706 j_index_start = jindex[iidx];
707 j_index_end = jindex[iidx+1];
708
709 /* Get outer coordinate index */
710 inr = iinr[iidx];
711 i_coord_offset = DIM3*inr;
712
713 /* Load i particle coords and add shift vector */
714 ix0 = shX + x[i_coord_offset+DIM3*0+XX0];
715 iy0 = shY + x[i_coord_offset+DIM3*0+YY1];
716 iz0 = shZ + x[i_coord_offset+DIM3*0+ZZ2];
717 ix1 = shX + x[i_coord_offset+DIM3*1+XX0];
718 iy1 = shY + x[i_coord_offset+DIM3*1+YY1];
719 iz1 = shZ + x[i_coord_offset+DIM3*1+ZZ2];
720 ix2 = shX + x[i_coord_offset+DIM3*2+XX0];
721 iy2 = shY + x[i_coord_offset+DIM3*2+YY1];
722 iz2 = shZ + x[i_coord_offset+DIM3*2+ZZ2];
723 ix3 = shX + x[i_coord_offset+DIM3*3+XX0];
724 iy3 = shY + x[i_coord_offset+DIM3*3+YY1];
725 iz3 = shZ + x[i_coord_offset+DIM3*3+ZZ2];
726
727 fix0 = 0.0;
728 fiy0 = 0.0;
729 fiz0 = 0.0;
730 fix1 = 0.0;
731 fiy1 = 0.0;
732 fiz1 = 0.0;
733 fix2 = 0.0;
734 fiy2 = 0.0;
735 fiz2 = 0.0;
736 fix3 = 0.0;
737 fiy3 = 0.0;
738 fiz3 = 0.0;
739
740 /* Start inner kernel loop */
741 for(jidx=j_index_start; jidx<j_index_end; jidx++)
742 {
743 /* Get j neighbor index, and coordinate index */
744 jnr = jjnr[jidx];
745 j_coord_offset = DIM3*jnr;
746
747 /* load j atom coordinates */
748 jx0 = x[j_coord_offset+DIM3*0+XX0];
749 jy0 = x[j_coord_offset+DIM3*0+YY1];
750 jz0 = x[j_coord_offset+DIM3*0+ZZ2];
751 jx1 = x[j_coord_offset+DIM3*1+XX0];
752 jy1 = x[j_coord_offset+DIM3*1+YY1];
753 jz1 = x[j_coord_offset+DIM3*1+ZZ2];
754 jx2 = x[j_coord_offset+DIM3*2+XX0];
755 jy2 = x[j_coord_offset+DIM3*2+YY1];
756 jz2 = x[j_coord_offset+DIM3*2+ZZ2];
757 jx3 = x[j_coord_offset+DIM3*3+XX0];
758 jy3 = x[j_coord_offset+DIM3*3+YY1];
759 jz3 = x[j_coord_offset+DIM3*3+ZZ2];
760
761 /* Calculate displacement vector */
762 dx00 = ix0 - jx0;
763 dy00 = iy0 - jy0;
764 dz00 = iz0 - jz0;
765 dx11 = ix1 - jx1;
766 dy11 = iy1 - jy1;
767 dz11 = iz1 - jz1;
768 dx12 = ix1 - jx2;
769 dy12 = iy1 - jy2;
770 dz12 = iz1 - jz2;
771 dx13 = ix1 - jx3;
772 dy13 = iy1 - jy3;
773 dz13 = iz1 - jz3;
774 dx21 = ix2 - jx1;
775 dy21 = iy2 - jy1;
776 dz21 = iz2 - jz1;
777 dx22 = ix2 - jx2;
778 dy22 = iy2 - jy2;
779 dz22 = iz2 - jz2;
780 dx23 = ix2 - jx3;
781 dy23 = iy2 - jy3;
782 dz23 = iz2 - jz3;
783 dx31 = ix3 - jx1;
784 dy31 = iy3 - jy1;
785 dz31 = iz3 - jz1;
786 dx32 = ix3 - jx2;
787 dy32 = iy3 - jy2;
788 dz32 = iz3 - jz2;
789 dx33 = ix3 - jx3;
790 dy33 = iy3 - jy3;
791 dz33 = iz3 - jz3;
792
793 /* Calculate squared distance and things based on it */
794 rsq00 = dx00*dx00+dy00*dy00+dz00*dz00;
795 rsq11 = dx11*dx11+dy11*dy11+dz11*dz11;
796 rsq12 = dx12*dx12+dy12*dy12+dz12*dz12;
797 rsq13 = dx13*dx13+dy13*dy13+dz13*dz13;
798 rsq21 = dx21*dx21+dy21*dy21+dz21*dz21;
799 rsq22 = dx22*dx22+dy22*dy22+dz22*dz22;
800 rsq23 = dx23*dx23+dy23*dy23+dz23*dz23;
801 rsq31 = dx31*dx31+dy31*dy31+dz31*dz31;
802 rsq32 = dx32*dx32+dy32*dy32+dz32*dz32;
803 rsq33 = dx33*dx33+dy33*dy33+dz33*dz33;
804
805 rinv11 = gmx_invsqrt(rsq11)gmx_software_invsqrt(rsq11);
806 rinv12 = gmx_invsqrt(rsq12)gmx_software_invsqrt(rsq12);
807 rinv13 = gmx_invsqrt(rsq13)gmx_software_invsqrt(rsq13);
808 rinv21 = gmx_invsqrt(rsq21)gmx_software_invsqrt(rsq21);
809 rinv22 = gmx_invsqrt(rsq22)gmx_software_invsqrt(rsq22);
810 rinv23 = gmx_invsqrt(rsq23)gmx_software_invsqrt(rsq23);
811 rinv31 = gmx_invsqrt(rsq31)gmx_software_invsqrt(rsq31);
812 rinv32 = gmx_invsqrt(rsq32)gmx_software_invsqrt(rsq32);
813 rinv33 = gmx_invsqrt(rsq33)gmx_software_invsqrt(rsq33);
814
815 rinvsq00 = 1.0/rsq00;
816 rinvsq11 = rinv11*rinv11;
817 rinvsq12 = rinv12*rinv12;
818 rinvsq13 = rinv13*rinv13;
819 rinvsq21 = rinv21*rinv21;
820 rinvsq22 = rinv22*rinv22;
821 rinvsq23 = rinv23*rinv23;
822 rinvsq31 = rinv31*rinv31;
823 rinvsq32 = rinv32*rinv32;
824 rinvsq33 = rinv33*rinv33;
825
826 /**************************
827 * CALCULATE INTERACTIONS *
828 **************************/
829
830 /* LENNARD-JONES DISPERSION/REPULSION */
831
832 rinvsix = rinvsq00*rinvsq00*rinvsq00;
833 fvdw = (c12_00*rinvsix-c6_00)*rinvsix*rinvsq00;
834
835 fscal = fvdw;
836
837 /* Calculate temporary vectorial force */
838 tx = fscal*dx00;
839 ty = fscal*dy00;
840 tz = fscal*dz00;
841
842 /* Update vectorial force */
843 fix0 += tx;
844 fiy0 += ty;
845 fiz0 += tz;
846 f[j_coord_offset+DIM3*0+XX0] -= tx;
847 f[j_coord_offset+DIM3*0+YY1] -= ty;
848 f[j_coord_offset+DIM3*0+ZZ2] -= tz;
849
850 /**************************
851 * CALCULATE INTERACTIONS *
852 **************************/
853
854 /* COULOMB ELECTROSTATICS */
855 velec = qq11*rinv11;
856 felec = velec*rinvsq11;
857
858 fscal = felec;
859
860 /* Calculate temporary vectorial force */
861 tx = fscal*dx11;
862 ty = fscal*dy11;
863 tz = fscal*dz11;
864
865 /* Update vectorial force */
866 fix1 += tx;
867 fiy1 += ty;
868 fiz1 += tz;
869 f[j_coord_offset+DIM3*1+XX0] -= tx;
870 f[j_coord_offset+DIM3*1+YY1] -= ty;
871 f[j_coord_offset+DIM3*1+ZZ2] -= tz;
872
873 /**************************
874 * CALCULATE INTERACTIONS *
875 **************************/
876
877 /* COULOMB ELECTROSTATICS */
878 velec = qq12*rinv12;
879 felec = velec*rinvsq12;
880
881 fscal = felec;
882
883 /* Calculate temporary vectorial force */
884 tx = fscal*dx12;
885 ty = fscal*dy12;
886 tz = fscal*dz12;
887
888 /* Update vectorial force */
889 fix1 += tx;
890 fiy1 += ty;
891 fiz1 += tz;
892 f[j_coord_offset+DIM3*2+XX0] -= tx;
893 f[j_coord_offset+DIM3*2+YY1] -= ty;
894 f[j_coord_offset+DIM3*2+ZZ2] -= tz;
895
896 /**************************
897 * CALCULATE INTERACTIONS *
898 **************************/
899
900 /* COULOMB ELECTROSTATICS */
901 velec = qq13*rinv13;
902 felec = velec*rinvsq13;
903
904 fscal = felec;
905
906 /* Calculate temporary vectorial force */
907 tx = fscal*dx13;
908 ty = fscal*dy13;
909 tz = fscal*dz13;
910
911 /* Update vectorial force */
912 fix1 += tx;
913 fiy1 += ty;
914 fiz1 += tz;
915 f[j_coord_offset+DIM3*3+XX0] -= tx;
916 f[j_coord_offset+DIM3*3+YY1] -= ty;
917 f[j_coord_offset+DIM3*3+ZZ2] -= tz;
918
919 /**************************
920 * CALCULATE INTERACTIONS *
921 **************************/
922
923 /* COULOMB ELECTROSTATICS */
924 velec = qq21*rinv21;
925 felec = velec*rinvsq21;
926
927 fscal = felec;
928
929 /* Calculate temporary vectorial force */
930 tx = fscal*dx21;
931 ty = fscal*dy21;
932 tz = fscal*dz21;
933
934 /* Update vectorial force */
935 fix2 += tx;
936 fiy2 += ty;
937 fiz2 += tz;
938 f[j_coord_offset+DIM3*1+XX0] -= tx;
939 f[j_coord_offset+DIM3*1+YY1] -= ty;
940 f[j_coord_offset+DIM3*1+ZZ2] -= tz;
941
942 /**************************
943 * CALCULATE INTERACTIONS *
944 **************************/
945
946 /* COULOMB ELECTROSTATICS */
947 velec = qq22*rinv22;
948 felec = velec*rinvsq22;
949
950 fscal = felec;
951
952 /* Calculate temporary vectorial force */
953 tx = fscal*dx22;
954 ty = fscal*dy22;
955 tz = fscal*dz22;
956
957 /* Update vectorial force */
958 fix2 += tx;
959 fiy2 += ty;
960 fiz2 += tz;
961 f[j_coord_offset+DIM3*2+XX0] -= tx;
962 f[j_coord_offset+DIM3*2+YY1] -= ty;
963 f[j_coord_offset+DIM3*2+ZZ2] -= tz;
964
965 /**************************
966 * CALCULATE INTERACTIONS *
967 **************************/
968
969 /* COULOMB ELECTROSTATICS */
970 velec = qq23*rinv23;
971 felec = velec*rinvsq23;
972
973 fscal = felec;
974
975 /* Calculate temporary vectorial force */
976 tx = fscal*dx23;
977 ty = fscal*dy23;
978 tz = fscal*dz23;
979
980 /* Update vectorial force */
981 fix2 += tx;
982 fiy2 += ty;
983 fiz2 += tz;
984 f[j_coord_offset+DIM3*3+XX0] -= tx;
985 f[j_coord_offset+DIM3*3+YY1] -= ty;
986 f[j_coord_offset+DIM3*3+ZZ2] -= tz;
987
988 /**************************
989 * CALCULATE INTERACTIONS *
990 **************************/
991
992 /* COULOMB ELECTROSTATICS */
993 velec = qq31*rinv31;
994 felec = velec*rinvsq31;
995
996 fscal = felec;
997
998 /* Calculate temporary vectorial force */
999 tx = fscal*dx31;
1000 ty = fscal*dy31;
1001 tz = fscal*dz31;
1002
1003 /* Update vectorial force */
1004 fix3 += tx;
1005 fiy3 += ty;
1006 fiz3 += tz;
1007 f[j_coord_offset+DIM3*1+XX0] -= tx;
1008 f[j_coord_offset+DIM3*1+YY1] -= ty;
1009 f[j_coord_offset+DIM3*1+ZZ2] -= tz;
1010
1011 /**************************
1012 * CALCULATE INTERACTIONS *
1013 **************************/
1014
1015 /* COULOMB ELECTROSTATICS */
1016 velec = qq32*rinv32;
1017 felec = velec*rinvsq32;
1018
1019 fscal = felec;
1020
1021 /* Calculate temporary vectorial force */
1022 tx = fscal*dx32;
1023 ty = fscal*dy32;
1024 tz = fscal*dz32;
1025
1026 /* Update vectorial force */
1027 fix3 += tx;
1028 fiy3 += ty;
1029 fiz3 += tz;
1030 f[j_coord_offset+DIM3*2+XX0] -= tx;
1031 f[j_coord_offset+DIM3*2+YY1] -= ty;
1032 f[j_coord_offset+DIM3*2+ZZ2] -= tz;
1033
1034 /**************************
1035 * CALCULATE INTERACTIONS *
1036 **************************/
1037
1038 /* COULOMB ELECTROSTATICS */
1039 velec = qq33*rinv33;
1040 felec = velec*rinvsq33;
1041
1042 fscal = felec;
1043
1044 /* Calculate temporary vectorial force */
1045 tx = fscal*dx33;
1046 ty = fscal*dy33;
1047 tz = fscal*dz33;
1048
1049 /* Update vectorial force */
1050 fix3 += tx;
1051 fiy3 += ty;
1052 fiz3 += tz;
1053 f[j_coord_offset+DIM3*3+XX0] -= tx;
1054 f[j_coord_offset+DIM3*3+YY1] -= ty;
1055 f[j_coord_offset+DIM3*3+ZZ2] -= tz;
1056
1057 /* Inner loop uses 261 flops */
1058 }
1059 /* End of innermost loop */
1060
1061 tx = ty = tz = 0;
1062 f[i_coord_offset+DIM3*0+XX0] += fix0;
1063 f[i_coord_offset+DIM3*0+YY1] += fiy0;
1064 f[i_coord_offset+DIM3*0+ZZ2] += fiz0;
1065 tx += fix0;
1066 ty += fiy0;
1067 tz += fiz0;
1068 f[i_coord_offset+DIM3*1+XX0] += fix1;
1069 f[i_coord_offset+DIM3*1+YY1] += fiy1;
1070 f[i_coord_offset+DIM3*1+ZZ2] += fiz1;
1071 tx += fix1;
1072 ty += fiy1;
1073 tz += fiz1;
1074 f[i_coord_offset+DIM3*2+XX0] += fix2;
1075 f[i_coord_offset+DIM3*2+YY1] += fiy2;
1076 f[i_coord_offset+DIM3*2+ZZ2] += fiz2;
1077 tx += fix2;
1078 ty += fiy2;
1079 tz += fiz2;
1080 f[i_coord_offset+DIM3*3+XX0] += fix3;
1081 f[i_coord_offset+DIM3*3+YY1] += fiy3;
1082 f[i_coord_offset+DIM3*3+ZZ2] += fiz3;
1083 tx += fix3;
1084 ty += fiy3;
1085 tz += fiz3;
1086 fshift[i_shift_offset+XX0] += tx;
1087 fshift[i_shift_offset+YY1] += ty;
1088 fshift[i_shift_offset+ZZ2] += tz;
1089
1090 /* Increment number of inner iterations */
1091 inneriter += j_index_end - j_index_start;
1092
1093 /* Outer loop uses 39 flops */
1094 }
1095
1096 /* Increment number of outer iterations */
1097 outeriter += nri;
1098
1099 /* Update outer/inner flops */
1100
1101 inc_nrnb(nrnb,eNR_NBKERNEL_ELEC_VDW_W4W4_F,outeriter*39 + inneriter*261)(nrnb)->n[eNR_NBKERNEL_ELEC_VDW_W4W4_F] += outeriter*39 + inneriter
*261
;
1102}