From 3eb67e3bca774eb0441db60158e1968ad901273b Mon Sep 17 00:00:00 2001
From: Jaron Kent-Dobias <jaron@kent-dobias.com>
Date: Thu, 28 Jun 2018 14:20:25 -0400
Subject: cleaned up the operation of the finite-group wolff code

---
 src/wolff_finite.c | 433 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 433 insertions(+)
 create mode 100644 src/wolff_finite.c

(limited to 'src/wolff_finite.c')

diff --git a/src/wolff_finite.c b/src/wolff_finite.c
new file mode 100644
index 0000000..47fcc88
--- /dev/null
+++ b/src/wolff_finite.c
@@ -0,0 +1,433 @@
+
+#include <getopt.h>
+
+#include <initial_finite.h>
+
+int main(int argc, char *argv[]) {
+
+  L_t L = 128;
+  count_t N = (count_t)1e7;
+  count_t min_runs = 10;
+  count_t n = 3;
+  q_t q = 2;
+  D_t D = 2;
+  double T = 2.26918531421;
+  double *J = (double *)calloc(MAX_Q, sizeof(double));
+  J[0] = 1.0;
+  double *H = (double *)calloc(MAX_Q, sizeof(double));
+  double eps = 0;
+  bool silent = false;
+  bool snapshots = false;
+  bool snapshot = false;
+  bool record_autocorrelation = false;
+  bool record_distribution = false;
+  count_t W = 10;
+  count_t ac_skip = 1;
+
+  finite_model_t model = ISING;
+
+  int opt;
+  q_t J_ind = 0;
+  q_t H_ind = 0;
+
+  while ((opt = getopt(argc, argv, "N:n:D:L:q:T:J:H:m:e:IpsSPak:W:drt:")) != -1) {
+    switch (opt) {
+    case 'N':
+      N = (count_t)atof(optarg);
+      break;
+    case 'n':
+      n = (count_t)atof(optarg);
+      break;
+    case 'D':
+      D = atoi(optarg);
+      break;
+    case 'L':
+      L = atoi(optarg);
+      break;
+    case 'q':
+      q = atoi(optarg);
+      break;
+    case 'T':
+      T = atof(optarg);
+      break;
+    case 'J':
+      J[J_ind] = atof(optarg);
+      J_ind++;
+      break;
+    case 'H':
+      H[H_ind] = atof(optarg);
+      H_ind++;
+      break;
+    case 'm':
+      min_runs = atoi(optarg);
+      break;
+    case 'e':
+      eps = atof(optarg);
+      break;
+    case 's':
+      silent = true;
+      break;
+    case 'S':
+      snapshots = true;
+      break;
+    case 'P':
+      snapshot = true;
+      break;
+    case 'a':
+      record_autocorrelation = true;
+      break;
+    case 'k':
+      ac_skip = (count_t)atof(optarg);
+      break;
+    case 'W':
+      W = (count_t)atof(optarg);
+      break;
+    case 'd':
+      record_distribution = true;
+      break;
+    case 't':
+      model = (finite_model_t)atoi(optarg);
+      break;
+    default:
+      exit(EXIT_FAILURE);
+    }
+  }
+
+  state_finite_t *s;
+
+  gsl_rng *r = gsl_rng_alloc(gsl_rng_mt19937);
+  gsl_rng_set(r, rand_seed());
+
+  switch (model) {
+    case ISING:
+      s = initial_finite_prepare_ising(D, L, T, H); 
+      break;
+    case POTTS:
+      s = initial_finite_prepare_potts(D, L, q, T, H);
+      break;
+    case CLOCK:
+      s = initial_finite_prepare_clock(D, L, q, T, H);
+      break;
+    case DGM:
+      s = initial_finite_prepare_dgm(D, L, q, T, H);
+      break;
+    default:
+      printf("Not a valid model!\n");
+      return 1;
+  }
+
+  free(J);
+  free(H);
+
+
+  double diff = 1e31;
+  count_t n_runs = 0;
+  count_t n_steps = 0;
+
+  meas_t *E, *clust, **M, **sE, ***sM;
+
+  M = (meas_t **)malloc(q * sizeof(meas_t *));
+  for (q_t i = 0; i < q; i++) {
+    M[i] = (meas_t *)calloc(1, sizeof(meas_t));
+  }
+
+  E = calloc(1, sizeof(meas_t));
+  clust = calloc(1, sizeof(meas_t));
+
+  sE = (meas_t **)malloc(q * sizeof(meas_t *));
+  sM = (meas_t ***)malloc(q * sizeof(meas_t **));
+
+  for (q_t i = 0; i < q; i++) {
+    sE[i] = (meas_t *)calloc(1, sizeof(meas_t));
+    sM[i] = (meas_t **)malloc(q * sizeof(meas_t *));
+    for (q_t j = 0; j < q; j++) {
+      sM[i][j] = (meas_t *)calloc(1, sizeof(meas_t));
+    }
+  }
+
+  count_t *freqs = (count_t *)calloc(q, sizeof(count_t));
+  q_t cur_M = 0;
+
+  autocorr_t *autocorr;
+  if (record_autocorrelation) {
+    autocorr = (autocorr_t *)calloc(1, sizeof(autocorr_t));
+    autocorr->W = 2 * W + 1;
+    autocorr->OO = (double *)calloc(2 * W + 1, sizeof(double));
+  }
+
+  count_t *mag_dist;
+  if (record_distribution) {
+    mag_dist = (count_t *)calloc(s->nv + 1, sizeof(count_t));
+  }
+
+  if (!silent) printf("\n");
+  while (((diff > eps || diff != diff) && n_runs < N) || n_runs < min_runs) {
+    if (!silent) printf("\033[F\033[JWOLFF: sweep %" PRIu64
+           ", dH/H = %.4f, dM/M = %.4f, dC/C = %.4f, dX/X = %.4f, cps: %.1f\n",
+           n_runs, fabs(meas_dx(E) / E->x), meas_dx(M[0]) / M[0]->x, meas_dc(E) / meas_c(E), meas_dc(M[0]) / meas_c(M[0]), s->nv / clust->x);
+
+    count_t n_flips = 0;
+
+    while (n_flips / s->nv < n) {
+      v_t v0 = gsl_rng_uniform_int(r, s->nv);
+      R_t step;
+     
+      bool changed = false;
+      while (!changed) {
+        step = gsl_rng_uniform_int(r, s->n_transformations);
+        if (symmetric_act(s->transformations + q * step, s->spins[v0]) != s->spins[v0]) {
+          changed = true;
+        }
+      }
+
+      v_t tmp_flips = flip_cluster_finite(s, v0, step, r);
+      n_flips += tmp_flips;
+
+      if (n_runs > 0) {
+        n_steps++;
+        meas_update(clust, tmp_flips);
+
+        if (record_autocorrelation && n_steps % ac_skip == 0) {
+          update_autocorr(autocorr, s->E);
+        }
+
+      }
+
+    }
+
+    for (q_t i = 0; i < q; i++) {
+      meas_update(M[i], s->M[i]);
+    }
+    meas_update(E, s->E);
+
+    q_t n_at_max = 0;
+    q_t max_M_i = 0;
+    v_t max_M = 0;
+
+    for (q_t i = 0; i < q; i++) {
+      if (s->M[i] > max_M) {
+        n_at_max = 1;
+        max_M_i = i;
+        max_M = s->M[i];
+      } else if (s->M[i] == max_M) {
+        n_at_max++;
+      }
+    }
+
+    if (record_distribution) {
+      mag_dist[s->M[0]]++;
+    }
+
+    if (n_at_max == 1) {
+      for (q_t i = 0; i < q; i++) {
+        meas_update(sM[max_M_i][i], s->M[i]);
+      }
+      meas_update(sE[max_M_i], s->E);
+      freqs[max_M_i]++;
+    }
+
+    diff = fabs(meas_dx(clust) / clust->x);
+
+    n_runs++;
+  }
+  if (!silent) {
+    printf("\033[F\033[J");
+  }
+  printf("WOLFF: sweep %" PRIu64
+         ", dH/H = %.4f, dM/M = %.4f, dC/C = %.4f, dX/X = %.4f, cps: %.1f\n",
+         n_runs, fabs(meas_dx(E) / E->x), meas_dx(M[0]) / M[0]->x, meas_dc(E) / meas_c(E), meas_dc(M[0]) / meas_c(M[0]), s->nv / clust->x);
+
+  if (snapshots) {
+    FILE *snapfile = fopen("snapshots.m", "a");
+    fprintf(snapfile, "\n");
+  }
+
+  if (snapshot) {
+    q_t *R_inv = symmetric_invert(q, s->R);
+    FILE *snapfile = fopen("snapshot.m", "a");
+    fprintf(snapfile, "{{");
+    for (L_t i = 0; i < L; i++) {
+      fprintf(snapfile, "{");
+      for (L_t j = 0; j < L; j++) {
+        fprintf(snapfile, "%" PRIq, symmetric_act(R_inv, s->spins[L * i + j]));
+        if (j != L - 1) {
+          fprintf(snapfile, ",");
+        }
+      }
+      fprintf(snapfile, "}");
+      if (i != L - 1) {
+        fprintf(snapfile, ",");
+      }
+    }
+    fprintf(snapfile, "}}\n");
+    fclose(snapfile);
+  }
+
+  double tau = 0;
+  int tau_failed = 0;
+
+  if (record_autocorrelation) {
+    double *Gammas = (double *)malloc((W + 1) * sizeof(double));
+
+    Gammas[0] = 1 + rho(autocorr, 0);
+    for (uint64_t i = 0; i < W; i++) {
+      Gammas[1 + i] = rho(autocorr, 2 * i + 1) + rho(autocorr, 2 * i + 2);
+    } 
+
+    uint64_t n;
+    for (n = 0; n < W + 1; n++) {
+      if (Gammas[n] <= 0) {
+        break;
+      }
+    }
+
+    if (n == W + 1) {
+      printf("WARNING: correlation function never hit the noise floor.\n");
+      tau_failed = 1;
+    }
+
+    if (n < 2) {
+      printf("WARNING: correlation function only has one nonnegative term.\n");
+      tau_failed = 2;
+    }
+
+    double *conv_Gamma = get_convex_minorant(n, Gammas);
+
+    double ttau = - 0.5;
+
+    for (uint64_t i = 0; i < n + 1; i++) {
+      ttau += conv_Gamma[i];
+    }
+    
+    tau = ttau * ac_skip * clust->x / s->nv;
+    
+    free(Gammas);
+    free(autocorr->OO);
+    while (autocorr->Op != NULL) {
+      stack_pop_d(&(autocorr->Op));
+    }
+    free(autocorr);
+  }
+
+  if (tau_failed) {
+    //tau = 0;
+  }
+
+  {
+  FILE *outfile = fopen("out.m", "a");
+
+  fprintf(outfile, "<|N->%" PRIcount ",n->%" PRIcount ",D->%" PRID ",L->%" PRIL ",q->%" PRIq ",T->%.15f,J->{", N, n, D, L, q, T);
+  for (q_t i = 0; i < q; i++) {
+    fprintf(outfile, "%.15f", s->J[i]);
+    if (i != q-1) {
+      fprintf(outfile, ",");
+    }
+  }
+  fprintf(outfile, "},H->{");
+  for (q_t i = 0; i < q; i++) {
+    fprintf(outfile, "%.15f", s->H[i]);
+    if (i != q-1) {
+      fprintf(outfile, ",");
+    }
+  }
+  fprintf(outfile, "},E->%.15f,\\[Delta]E->%.15f,C->%.15f,\\[Delta]C->%.15f,M->{", E->x / s->nv, meas_dx(E) / s->nv, meas_c(E) / s->nv, meas_dc(E) / s->nv);
+  for (q_t i = 0; i < q; i++) {
+    fprintf(outfile, "%.15f", M[i]->x / s->nv);
+    if (i != q-1) {
+      fprintf(outfile, ",");
+    }
+  }
+  fprintf(outfile, "},\\[Delta]M->{");
+  for (q_t i = 0; i < q; i++) {
+    fprintf(outfile, "%.15f", meas_dx(M[i]) / s->nv);
+    if (i != q-1) {
+      fprintf(outfile, ",");
+    }
+  }
+  fprintf(outfile, "},\\[Chi]->{");
+  for (q_t i = 0; i < q; i++) {
+    fprintf(outfile, "%.15f", meas_c(M[i]) / s->nv);
+    if (i != q-1) {
+      fprintf(outfile, ",");
+    }
+  }
+  fprintf(outfile, "},\\[Delta]\\[Chi]->{");
+  for (q_t i = 0; i < q; i++) {
+    fprintf(outfile, "%.15f", meas_dc(M[i]) / s->nv);
+    if (i != q-1) {
+      fprintf(outfile, ",");
+    }
+  }
+  for (q_t i = 0; i < q; i++) {
+    fprintf(outfile, "},Subscript[E,%" PRIq "]->%.15f,Subscript[\\[Delta]E,%" PRIq "]->%.15f,Subscript[C,%" PRIq "]->%.15f,Subscript[\\[Delta]C,%" PRIq "]->%.15f,Subscript[M,%" PRIq "]->{", i, sE[i]->x / s->nv, i, meas_dx(sE[i]) / s->nv, i, meas_c(sE[i]) / s->nv, i, meas_dc(sE[i]) / s->nv, i);
+    for (q_t j = 0; j < q; j++) {
+      fprintf(outfile, "%.15f", sM[i][j]->x / s->nv);
+      if (j != q-1) {
+        fprintf(outfile, ",");
+      }
+    }
+    fprintf(outfile, "},Subscript[\\[Delta]M,%" PRIq "]->{", i);
+    for (q_t j = 0; j < q; j++) {
+      fprintf(outfile, "%.15f", meas_dx(sM[i][j]) / s->nv);
+      if (j != q-1) {
+        fprintf(outfile, ",");
+      }
+    }
+    fprintf(outfile, "},Subscript[\\[Chi],%" PRIq "]->{", i);
+    for (q_t j = 0; j < q; j++) {
+      fprintf(outfile, "%.15f", meas_c(sM[i][j]) / s->nv);
+      if (j != q-1) {
+        fprintf(outfile, ",");
+      }
+    }
+    fprintf(outfile, "},Subscript[\\[Delta]\\[Chi],%" PRIq "]->{", i);
+    for (q_t j = 0; j < q; j++) {
+      fprintf(outfile, "%.15f", meas_dc(sM[i][j]) / s->nv);
+      if (j != q-1) {
+        fprintf(outfile, ",");
+      }
+    }
+  }
+  fprintf(outfile,"}");
+  for (q_t i = 0; i < q; i++) {
+    fprintf(outfile, ",Subscript[f,%" PRIq "]->%.15f,Subscript[\\[Delta]f,%" PRIq "]->%.15f", i, (double)freqs[i] / (double)n_runs, i, sqrt(freqs[i]) / (double)n_runs);
+  }
+  fprintf(outfile, ",Subscript[n,\"clust\"]->%.15f,Subscript[\\[Delta]n,\"clust\"]->%.15f,Subscript[m,\"clust\"]->%.15f,Subscript[\\[Delta]m,\"clust\"]->%.15f,\\[Tau]->%.15f,\\[Tau]s->%d", clust->x / s->nv, meas_dx(clust) / s->nv, meas_c(clust) / s->nv, meas_dc(clust) / s->nv,tau,tau_failed);
+  if (record_distribution) {
+    fprintf(outfile, ",S->{");
+    for (v_t i = 0; i < s->nv + 1; i++) {
+      fprintf(outfile, "%" PRIcount, mag_dist[i]);
+      if (i != s->nv) {
+        fprintf(outfile, ",");
+      }
+    }
+    fprintf(outfile, "}");
+    free(mag_dist);
+  }
+  fprintf(outfile, "|>\n");
+
+  fclose(outfile);
+  }
+
+  free(E);
+  free(clust);
+  for (q_t i = 0; i < q; i++) {
+    free(M[i]);
+    for (q_t j = 0; j < q; j++) {
+      free(sM[i][j]);
+    }
+    free(sM[i]);
+  }
+  free(M);
+  free(sM);
+  for (q_t i = 0; i < q; i++) {
+    free(sE[i]);
+  }
+  free(freqs);
+  free(sE);
+  state_finite_free(s);
+  gsl_rng_free(r);
+
+  return 0;
+}
+
-- 
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