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46 #include "gromacs/mdtypes/commrec.h"
47 #include "gromacs/mdtypes/md_enums.h"
48 #include "gromacs/utility/arraysize.h"
49 #include "gromacs/utility/smalloc.h"
57 static const t_nrnb_data nbdata[eNRNB] = {
58 /* These are re-used for different NB kernels, since there are so many.
59 * The actual number of flops is set dynamically.
61 { "NB VdW [V&F]", 1 },
63 { "NB Elec. [V&F]", 1 },
64 { "NB Elec. [F]", 1 },
65 { "NB Elec. [W3,V&F]", 1 },
66 { "NB Elec. [W3,F]", 1 },
67 { "NB Elec. [W3-W3,V&F]", 1 },
68 { "NB Elec. [W3-W3,F]", 1 },
69 { "NB Elec. [W4,V&F]", 1 },
70 { "NB Elec. [W4,F]", 1 },
71 { "NB Elec. [W4-W4,V&F]", 1 },
72 { "NB Elec. [W4-W4,F]", 1 },
73 { "NB VdW & Elec. [V&F]", 1 },
74 { "NB VdW & Elec. [F]", 1 },
75 { "NB VdW & Elec. [W3,V&F]", 1 },
76 { "NB VdW & Elec. [W3,F]", 1 },
77 { "NB VdW & Elec. [W3-W3,V&F]", 1 },
78 { "NB VdW & Elec. [W3-W3,F]", 1 },
79 { "NB VdW & Elec. [W4,V&F]", 1 },
80 { "NB VdW & Elec. [W4,F]", 1 },
81 { "NB VdW & Elec. [W4-W4,V&F]", 1 },
82 { "NB VdW & Elec. [W4-W4,F]", 1 },
84 { "NB Generic kernel", 1 },
85 { "NB Generic charge grp kernel", 1 },
86 { "NB Free energy kernel", 1 },
88 { "Pair Search distance check", 9 }, /* nbnxn pair dist. check */
89 /* nbnxn kernel flops are based on inner-loops without exclusion checks.
90 * Plain Coulomb runs through the RF kernels, except with GPUs.
91 * invsqrt is counted as 6 flops: 1 for _mm_rsqt_ps + 5 for iteration.
92 * The flops are equal for plain-C, x86 SIMD and GPUs, except for:
93 * - plain-C kernel uses one flop more for Coulomb-only (F) than listed
94 * - x86 SIMD LJ geom-comb.rule kernels (fastest) use 2 more flops
95 * - x86 SIMD LJ LB-comb.rule kernels (fast) use 3 (8 for F+E) more flops
96 * - GPU always does exclusions, which requires 2-4 flops, but as invsqrt
97 * is always counted as 6 flops, this roughly compensates.
99 { "NxN RF Elec. + LJ [F]", 38 }, /* nbnxn kernel LJ+RF, no ener */
100 { "NxN RF Elec. + LJ [V&F]", 54 },
101 { "NxN QSTab Elec. + LJ [F]", 41 }, /* nbnxn kernel LJ+tab, no en */
102 { "NxN QSTab Elec. + LJ [V&F]", 59 },
103 { "NxN Ewald Elec. + LJ [F]", 66 }, /* nbnxn kernel LJ+Ewald, no en */
104 { "NxN Ewald Elec. + LJ [V&F]", 107 },
105 { "NxN LJ [F]", 33 }, /* nbnxn kernel LJ, no ener */
106 { "NxN LJ [V&F]", 43 },
107 { "NxN RF Electrostatics [F]", 31 }, /* nbnxn kernel RF, no ener */
108 { "NxN RF Electrostatics [V&F]", 36 },
109 { "NxN QSTab Elec. [F]", 34 }, /* nbnxn kernel tab, no ener */
110 { "NxN QSTab Elec. [V&F]", 41 },
111 { "NxN Ewald Elec. [F]", 61 }, /* nbnxn kernel Ewald, no ener */
112 { "NxN Ewald Elec. [V&F]", 84 },
113 /* The switch function flops should be added to the LJ kernels above */
114 { "NxN LJ add F-switch [F]", 12 }, /* extra cost for LJ F-switch */
115 { "NxN LJ add F-switch [V&F]", 22 },
116 { "NxN LJ add P-switch [F]", 27 }, /* extra cost for LJ P-switch */
117 { "NxN LJ add P-switch [V&F]", 20 },
118 { "NxN LJ add LJ Ewald [F]", 36 }, /* extra cost for LJ Ewald */
119 { "NxN LJ add LJ Ewald [V&F]", 33 },
120 { "1,4 nonbonded interactions", 90 },
121 { "Calc Weights", 36 },
123 { "Spread Q Bspline", 2 },
125 { "Gather F Bspline", 6 },
127 { "Convolution", 4 },
130 { "Reset In Box", 3 },
136 { "FENE Bonds", 58 },
137 { "Tab. Bonds", 62 },
138 { "Restraint Potential", 86 },
139 { "Linear Angles", 57 },
141 { "G96Angles", 150 },
142 { "Quartic Angles", 160 },
143 { "Tab. Angles", 169 },
145 { "Impropers", 208 },
146 { "RB-Dihedrals", 247 },
147 { "Four. Dihedrals", 247 },
148 { "Tab. Dihedrals", 227 },
149 { "Dist. Restr.", 200 },
150 { "Orient. Restr.", 200 },
151 { "Dihedral Restr.", 200 },
152 { "Pos. Restr.", 50 },
153 { "Flat-bottom posres", 50 },
154 { "Angle Restr.", 191 },
155 { "Angle Restr. Z", 164 },
156 { "Morse Potent.", 83 },
157 { "Cubic Bonds", 54 },
159 { "Polarization", 59 },
160 { "Anharmonic Polarization", 72 },
161 { "Water Pol.", 62 },
162 { "Thole Pol.", 296 },
165 { "Ext.ens. Update", 54 },
172 { "Constraint-V", 8 },
173 { "Shake-Init", 10 },
174 { "Constraint-Vir", 24 },
176 { "Virtual Site 2", 23 },
177 { "Virtual Site 3", 37 },
178 { "Virtual Site 3fd", 95 },
179 { "Virtual Site 3fad", 176 },
180 { "Virtual Site 3out", 87 },
181 { "Virtual Site 4fd", 110 },
182 { "Virtual Site 4fdn", 254 },
183 { "Virtual Site N", 15 },
184 { "CMAP", 1700 }, // Estimate!
185 { "Urey-Bradley", 183 },
186 { "Cross-Bond-Bond", 163 },
187 { "Cross-Bond-Angle", 163 }
190 static void pr_two(FILE *out, int c, int i)
194 fprintf(out, "%c0%1d", c, i);
198 fprintf(out, "%c%2d", c, i);
202 static void pr_difftime(FILE *out, double dt)
204 int ndays, nhours, nmins, nsecs;
205 gmx_bool bPrint, bPrinted;
207 ndays = static_cast<int>(dt/(24*3600));
208 dt = dt-24*3600*ndays;
209 nhours = static_cast<int>(dt/3600);
211 nmins = static_cast<int>(dt/60);
213 nsecs = static_cast<int>(dt);
214 bPrint = (ndays > 0);
218 fprintf(out, "%d", ndays);
220 bPrint = bPrint || (nhours > 0);
225 pr_two(out, 'd', nhours);
229 fprintf(out, "%d", nhours);
232 bPrinted = bPrinted || bPrint;
233 bPrint = bPrint || (nmins > 0);
238 pr_two(out, 'h', nmins);
242 fprintf(out, "%d", nmins);
245 bPrinted = bPrinted || bPrint;
248 pr_two(out, ':', nsecs);
252 fprintf(out, "%ds", nsecs);
257 void init_nrnb(t_nrnb *nrnb)
261 for (i = 0; (i < eNRNB); i++)
267 void cp_nrnb(t_nrnb *dest, t_nrnb *src)
271 for (i = 0; (i < eNRNB); i++)
273 dest->n[i] = src->n[i];
277 void add_nrnb(t_nrnb *dest, t_nrnb *s1, t_nrnb *s2)
281 for (i = 0; (i < eNRNB); i++)
283 dest->n[i] = s1->n[i]+s2->n[i];
287 void print_nrnb(FILE *out, t_nrnb *nrnb)
291 for (i = 0; (i < eNRNB); i++)
295 fprintf(out, " %-26s %10.0f.\n", nbdata[i].name, nrnb->n[i]);
300 void _inc_nrnb(t_nrnb *nrnb, int enr, int inc, char gmx_unused *file, int gmx_unused line)
304 printf("nrnb %15s(%2d) incremented with %8d from file %s line %d\n",
305 nbdata[enr].name, enr, inc, file, line);
309 /* Returns in enr is the index of a full nbnxn VdW kernel */
310 static gmx_bool nrnb_is_nbnxn_vdw_kernel(int enr)
312 return (enr >= eNR_NBNXN_LJ_RF && enr <= eNR_NBNXN_LJ_E);
315 /* Returns in enr is the index of an nbnxn kernel addition (LJ modification) */
316 static gmx_bool nrnb_is_nbnxn_kernel_addition(int enr)
318 return (enr >= eNR_NBNXN_ADD_LJ_FSW && enr <= eNR_NBNXN_ADD_LJ_EWALD_E);
321 void print_flop(FILE *out, t_nrnb *nrnb, double *nbfs, double *mflop)
324 double mni, frac, tfrac, tflop;
325 const char *myline = "-----------------------------------------------------------------------------";
328 for (i = 0; (i < eNR_NBKERNEL_TOTAL_NR); i++)
330 if (std::strstr(nbdata[i].name, "W3-W3") != nullptr)
332 *nbfs += 9e-6*nrnb->n[i];
334 else if (std::strstr(nbdata[i].name, "W3") != nullptr)
336 *nbfs += 3e-6*nrnb->n[i];
338 else if (std::strstr(nbdata[i].name, "W4-W4") != nullptr)
340 *nbfs += 10e-6*nrnb->n[i];
342 else if (std::strstr(nbdata[i].name, "W4") != nullptr)
344 *nbfs += 4e-6*nrnb->n[i];
348 *nbfs += 1e-6*nrnb->n[i];
352 for (i = 0; (i < eNRNB); i++)
354 tflop += 1e-6*nrnb->n[i]*nbdata[i].flop;
359 fprintf(out, "No MEGA Flopsen this time\n");
364 fprintf(out, "\n\tM E G A - F L O P S A C C O U N T I N G\n\n");
369 fprintf(out, " NB=Group-cutoff nonbonded kernels NxN=N-by-N cluster Verlet kernels\n");
370 fprintf(out, " RF=Reaction-Field VdW=Van der Waals QSTab=quadratic-spline table\n");
371 fprintf(out, " W3=SPC/TIP3p W4=TIP4p (single or pairs)\n");
372 fprintf(out, " V&F=Potential and force V=Potential only F=Force only\n\n");
374 fprintf(out, " %-32s %16s %15s %7s\n",
375 "Computing:", "M-Number", "M-Flops", "% Flops");
376 fprintf(out, "%s\n", myline);
380 for (i = 0; (i < eNRNB); i++)
382 mni = 1e-6*nrnb->n[i];
383 /* Skip empty entries and nbnxn additional flops,
384 * which have been added to the kernel entry.
386 if (mni > 0 && !nrnb_is_nbnxn_kernel_addition(i))
390 flop = nbdata[i].flop;
391 if (nrnb_is_nbnxn_vdw_kernel(i))
393 /* Possibly add the cost of an LJ switch/Ewald function */
394 for (j = eNR_NBNXN_ADD_LJ_FSW; j <= eNR_NBNXN_ADD_LJ_EWALD; j += 2)
398 /* Select the force or energy flop count */
399 e_kernel_add = j + ((i - eNR_NBNXN_LJ_RF) % 2);
401 if (nrnb->n[e_kernel_add] > 0)
403 flop += nbdata[e_kernel_add].flop;
408 frac = 100.0*mni*flop/tflop;
412 fprintf(out, " %-32s %16.6f %15.3f %6.1f\n",
413 nbdata[i].name, mni, mni*flop, frac);
419 fprintf(out, "%s\n", myline);
420 fprintf(out, " %-32s %16s %15.3f %6.1f\n",
421 "Total", "", *mflop, tfrac);
422 fprintf(out, "%s\n\n", myline);
424 if (nrnb->n[eNR_NBKERNEL_GENERIC] > 0)
427 "WARNING: Using the slow generic C kernel. This is fine if you are\n"
428 "comparing different implementations or MD software. Routine\n"
429 "simulations should use a different non-bonded setup for much better\n"
435 void print_perf(FILE *out, double time_per_thread, double time_per_node,
436 int64_t nsteps, double delta_t,
437 double nbfs, double mflop)
439 double wallclocktime;
443 if (time_per_node > 0)
445 fprintf(out, "%12s %12s %12s %10s\n", "", "Core t (s)", "Wall t (s)", "(%)");
446 fprintf(out, "%12s %12.3f %12.3f %10.1f\n", "Time:",
447 time_per_thread, time_per_node, 100.0*time_per_thread/time_per_node);
448 /* only print day-hour-sec format if time_per_node is more than 30 min */
449 if (time_per_node > 30*60)
451 fprintf(out, "%12s %12s", "", "");
452 pr_difftime(out, time_per_node);
456 mflop = mflop/time_per_node;
457 wallclocktime = nsteps*delta_t;
459 if (getenv("GMX_DETAILED_PERF_STATS") == nullptr)
461 fprintf(out, "%12s %12s %12s\n",
462 "", "(ns/day)", "(hour/ns)");
463 fprintf(out, "%12s %12.3f %12.3f\n", "Performance:",
464 wallclocktime*24*3.6/time_per_node, 1000*time_per_node/(3600*wallclocktime));
468 fprintf(out, "%12s %12s %12s %12s %12s\n",
469 "", "(Mnbf/s)", (mflop > 1000) ? "(GFlops)" : "(MFlops)",
470 "(ns/day)", "(hour/ns)");
471 fprintf(out, "%12s %12.3f %12.3f %12.3f %12.3f\n", "Performance:",
472 nbfs/time_per_node, (mflop > 1000) ? (mflop/1000) : mflop,
473 wallclocktime*24*3.6/time_per_node, 1000*time_per_node/(3600*wallclocktime));
478 if (getenv("GMX_DETAILED_PERF_STATS") == nullptr)
480 fprintf(out, "%12s %14s\n",
482 fprintf(out, "%12s %14.1f\n", "Performance:",
483 nsteps*3600.0/time_per_node);
487 fprintf(out, "%12s %12s %12s %14s\n",
488 "", "(Mnbf/s)", (mflop > 1000) ? "(GFlops)" : "(MFlops)",
490 fprintf(out, "%12s %12.3f %12.3f %14.1f\n", "Performance:",
491 nbfs/time_per_node, (mflop > 1000) ? (mflop/1000) : mflop,
492 nsteps*3600.0/time_per_node);
498 int cost_nrnb(int enr)
500 return nbdata[enr].flop;
503 const char *nrnb_str(int enr)
505 return nbdata[enr].name;
508 static const int force_index[] = {
509 eNR_BONDS, eNR_ANGLES, eNR_PROPER, eNR_IMPROPER,
510 eNR_RB, eNR_DISRES, eNR_ORIRES, eNR_POSRES,
511 eNR_FBPOSRES, eNR_NS,
513 #define NFORCE_INDEX asize(force_index)
515 static const int constr_index[] = {
516 eNR_SHAKE, eNR_SHAKE_RIJ, eNR_SETTLE, eNR_UPDATE, eNR_PCOUPL,
517 eNR_CONSTR_VIR, eNR_CONSTR_V
519 #define NCONSTR_INDEX asize(constr_index)
521 static double pr_av(FILE *log, t_commrec *cr,
522 double fav, const double ftot[], const char *title)
530 fav /= cr->nnodes - cr->npmenodes;
531 fprintf(log, "\n %-26s", title);
532 for (i = 0; (i < cr->nnodes); i++)
534 dperc = (100.0*ftot[i])/fav;
535 unb = std::max(unb, dperc);
536 perc = static_cast<int>(dperc);
537 fprintf(log, "%3d ", perc);
541 perc = static_cast<int>(10000.0/unb);
542 fprintf(log, "%6d%%\n\n", perc);
546 fprintf(log, "\n\n");
552 void pr_load(FILE *log, t_commrec *cr, t_nrnb nrnb[])
555 double dperc, unb, uf, us;
561 snew(ftot, cr->nnodes);
562 snew(stot, cr->nnodes);
564 for (i = 0; (i < cr->nnodes); i++)
566 add_nrnb(av, av, &(nrnb[i]));
567 /* Cost due to forces */
568 for (j = 0; (j < eNR_NBKERNEL_TOTAL_NR); j++)
570 ftot[i] += nrnb[i].n[j]*cost_nrnb(j);
572 for (j = 0; (j < NFORCE_INDEX); j++)
574 ftot[i] += nrnb[i].n[force_index[j]]*cost_nrnb(force_index[j]);
577 for (j = 0; (j < NCONSTR_INDEX); j++)
579 stot[i] += nrnb[i].n[constr_index[j]]*cost_nrnb(constr_index[j]);
582 for (j = 0; (j < eNRNB); j++)
584 av->n[j] = av->n[j]/static_cast<double>(cr->nnodes - cr->npmenodes);
587 fprintf(log, "\nDetailed load balancing info in percentage of average\n");
589 fprintf(log, " Type RANK:");
590 for (i = 0; (i < cr->nnodes); i++)
592 fprintf(log, "%3d ", i);
594 fprintf(log, "Scaling\n");
595 fprintf(log, "---------------------------");
596 for (i = 0; (i < cr->nnodes); i++)
598 fprintf(log, "----");
600 fprintf(log, "-------\n");
602 for (j = 0; (j < eNRNB); j++)
607 fprintf(log, " %-26s", nrnb_str(j));
608 for (i = 0; (i < cr->nnodes); i++)
610 dperc = (100.0*nrnb[i].n[j])/av->n[j];
611 unb = std::max(unb, dperc);
612 perc = static_cast<int>(dperc);
613 fprintf(log, "%3d ", perc);
617 perc = static_cast<int>(10000.0/unb);
618 fprintf(log, "%6d%%\n", perc);
627 for (i = 0; (i < cr->nnodes); i++)
632 uf = pr_av(log, cr, fav, ftot, "Total Force");
633 us = pr_av(log, cr, sav, stot, "Total Constr.");
635 unb = (uf*fav+us*sav)/(fav+sav);
639 fprintf(log, "\nTotal Scaling: %.0f%% of max performance\n\n", unb);