From 6e8b19e1f1a244ef09e1b63d7593250d6ce01692 Mon Sep 17 00:00:00 2001
From: Jaron Kent-Dobias <jaron@kent-dobias.com>
Date: Sun, 14 Oct 2018 20:54:01 -0400
Subject: added site and bond dependence, activated by compiler flags
---
examples/src/models/On/wolff_On.cpp | 4 +
examples/src/models/ising/CMakeLists.txt | 6 +-
examples/src/models/ising/wolff_ising.cpp | 4 +
.../src/models/ising/wolff_random-field_ising.cpp | 207 +++++++++++++++++++++
4 files changed, 220 insertions(+), 1 deletion(-)
create mode 100644 examples/src/models/ising/wolff_random-field_ising.cpp
(limited to 'examples/src')
diff --git a/examples/src/models/On/wolff_On.cpp b/examples/src/models/On/wolff_On.cpp
index e3568c7..ad2ac77 100644
--- a/examples/src/models/On/wolff_On.cpp
+++ b/examples/src/models/On/wolff_On.cpp
@@ -212,7 +212,11 @@ int main(int argc, char *argv[]) {
other_f = [&] (const On_t& s) {
glClear(GL_COLOR_BUFFER_BIT);
for (v_t i = 0; i < pow(L, 2); i++) {
+#ifdef NOFIELD
+ vector_R_t v_tmp = s.spins[i];
+#else
vector_R_t v_tmp = s.R.act_inverse(s.spins[i]);
+#endif
double thetai = fmod(2 * M_PI + theta(v_tmp), 2 * M_PI);
double saturation = 0.7;
double value = 0.9;
diff --git a/examples/src/models/ising/CMakeLists.txt b/examples/src/models/ising/CMakeLists.txt
index 495c7e5..9f4acd4 100644
--- a/examples/src/models/ising/CMakeLists.txt
+++ b/examples/src/models/ising/CMakeLists.txt
@@ -2,6 +2,7 @@
add_executable(wolff_ising wolff_ising.cpp)
add_executable(wolff_ising_2d wolff_ising.cpp)
add_executable(wolff_ising_2d_no-field wolff_ising.cpp)
+add_executable(wolff_random-field_ising wolff_random-field_ising.cpp)
set_target_properties(wolff_ising_2d PROPERTIES COMPILE_FLAGS "-DDIMENSION=2")
set_target_properties(wolff_ising_2d_no-field PROPERTIES COMPILE_FLAGS "-DDIMENSION=2 -DNOFIELD")
@@ -14,15 +15,18 @@ if (${GLUT} MATCHES "GLUT-NOTFOUND")
target_link_libraries(wolff_ising wolff wolff_examples)
target_link_libraries(wolff_ising_2d wolff wolff_examples)
target_link_libraries(wolff_ising_2d_no-field wolff wolff_examples)
+ target_link_libraries(wolff_random-field_ising wolff wolff_examples)
else()
target_compile_definitions(wolff_ising PUBLIC HAVE_GLUT)
target_compile_definitions(wolff_ising_2d PUBLIC HAVE_GLUT)
target_compile_definitions(wolff_ising_2d_no-field PUBLIC HAVE_GLUT)
+ target_compile_definitions(wolff_random-field_ising PUBLIC HAVE_GLUT)
target_link_libraries(wolff_ising wolff wolff_examples glut GL GLU)
target_link_libraries(wolff_ising_2d wolff wolff_examples glut GL GLU)
target_link_libraries(wolff_ising_2d_no-field wolff wolff_examples glut GL GLU)
+ target_link_libraries(wolff_random-field_ising wolff wolff_examples glut GL GLU)
endif()
-install(TARGETS wolff_ising wolff_ising_2d wolff_ising_2d_no-field DESTINATION ${CMAKE_INSTALL_BINDIR} OPTIONAL)
+install(TARGETS wolff_ising wolff_ising_2d wolff_ising_2d_no-field wolff_random-field_ising DESTINATION ${CMAKE_INSTALL_BINDIR} OPTIONAL)
diff --git a/examples/src/models/ising/wolff_ising.cpp b/examples/src/models/ising/wolff_ising.cpp
index 5bdaa82..f7a3ada 100644
--- a/examples/src/models/ising/wolff_ising.cpp
+++ b/examples/src/models/ising/wolff_ising.cpp
@@ -151,7 +151,11 @@ int main(int argc, char *argv[]) {
other_f = [] (const state_t <z2_t, ising_t>& s) {
glClear(GL_COLOR_BUFFER_BIT);
for (v_t i = 0; i < pow(s.L, 2); i++) {
+#ifdef NOFIELD
+ if (s.spins[i].x == false) {
+#else
if (s.spins[i].x == s.R.x) {
+#endif
glColor3f(0.0, 0.0, 0.0);
} else {
glColor3f(1.0, 1.0, 1.0);
diff --git a/examples/src/models/ising/wolff_random-field_ising.cpp b/examples/src/models/ising/wolff_random-field_ising.cpp
new file mode 100644
index 0000000..ce26b88
--- /dev/null
+++ b/examples/src/models/ising/wolff_random-field_ising.cpp
@@ -0,0 +1,207 @@
+
+#define SITE_DEPENDENCE
+
+#include <getopt.h>
+#include <stdio.h>
+
+// if you have GLUT installed, you can see graphics!
+#ifdef HAVE_GLUT
+#include <GL/glut.h>
+#endif
+
+// include your group and spin space
+#include "z2.hpp"
+#include "ising.hpp"
+
+#include <randutils/randutils.hpp>
+
+// measure.hpp contains useful functions for saving timeseries to files
+#include <measure.hpp>
+
+// include wolff.hpp
+#include <wolff.hpp>
+
+int main(int argc, char *argv[]) {
+
+ count_t N = (count_t)1e4;
+
+ D_t D = 2;
+ L_t L = 128;
+ double T = 2.26918531421;
+ double H = 0.0;
+
+ bool silent = false;
+ bool draw = false;
+ bool N_is_sweeps = false;
+ unsigned int window_size = 512;
+
+ // don't measure anything by default
+ unsigned char measurement_flags = 0;
+
+ int opt;
+
+ while ((opt = getopt(argc, argv, "N:D:L:T:H:sdw:M:S")) != -1) {
+ switch (opt) {
+ case 'N': // number of steps
+ N = (count_t)atof(optarg);
+ break;
+ case 'D': // dimension
+ D = atoi(optarg);
+ break;
+ case 'L': // linear size
+ L = atoi(optarg);
+ break;
+ case 'T': // temperature
+ T = atof(optarg);
+ break;
+ case 'H': // external field
+ H = atof(optarg);
+ break;
+ case 's': // don't print anything during simulation. speeds up slightly
+ silent = true;
+ break;
+ case 'S':
+ N_is_sweeps = true;
+ break;
+ case 'd':
+#ifdef HAVE_GLUT
+ draw = true;
+ break;
+#else
+ printf("You didn't compile this with the glut library installed!\n");
+ exit(EXIT_FAILURE);
+#endif
+ case 'w':
+ window_size = atoi(optarg);
+ break;
+ case 'M':
+ measurement_flags ^= 1 << atoi(optarg);
+ break;
+ default:
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ // get nanosecond timestamp for unique run id
+ unsigned long timestamp;
+
+ {
+ struct timespec spec;
+ clock_gettime(CLOCK_REALTIME, &spec);
+ timestamp = spec.tv_sec*1000000000LL + spec.tv_nsec;
+ }
+
+ // initialize random number generator
+ randutils::auto_seed_128 seeds;
+ std::mt19937 rng{seeds};
+
+ // define spin-spin coupling
+ std::function <double(const ising_t&, const ising_t&)> Z = [] (const ising_t& s1, const ising_t& s2) -> double {
+ if (s1.x == s2.x) {
+ return 1.0;
+ } else {
+ return -1.0;
+ }
+ };
+
+ // create random field
+ std::vector<double> random_field_values(pow(L, D));
+ std::normal_distribution<double> distribution(0.0, H);
+ for (v_t i = 0; i < pow(L, D); i++) {
+ random_field_values[i] = distribution(rng);
+ }
+
+ // define spin-field coupling
+ std::function <double(v_t, const ising_t&)> B = [&] (v_t v, const ising_t& s) -> double {
+ if (s.x) {
+ return -random_field_values[v];
+ } else {
+ return random_field_values[v];
+ }
+ };
+
+ // initialize state object
+#ifndef NOFIELD
+ state_t <z2_t, ising_t> s(D, L, T, Z, B);
+#else
+ state_t <z2_t, ising_t> s(D, L, T, Z);
+#endif
+
+ // define function that generates self-inverse rotations
+ std::function <z2_t(std::mt19937&, ising_t)> gen_R = [] (std::mt19937&, const ising_t& s) -> z2_t {
+ return z2_t(true);
+ };
+
+ FILE **outfiles = measure_setup_files(measurement_flags, timestamp);
+
+ std::function <void(const state_t<z2_t, ising_t>&)> other_f;
+ uint64_t sum_of_clusterSize = 0;
+
+ if (N_is_sweeps) {
+ other_f = [&] (const state_t<z2_t, ising_t>& s) {
+ sum_of_clusterSize += s.last_cluster_size;
+ };
+ } else if (draw) {
+#ifdef HAVE_GLUT
+ // initialize glut
+ glutInit(&argc, argv);
+ glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
+ glutInitWindowSize(window_size, window_size);
+ glutCreateWindow("wolff");
+ glClearColor(0.0,0.0,0.0,0.0);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ gluOrtho2D(0.0, L, 0.0, L);
+
+ other_f = [] (const state_t <z2_t, ising_t>& s) {
+ glClear(GL_COLOR_BUFFER_BIT);
+ for (v_t i = 0; i < pow(s.L, 2); i++) {
+#ifdef NOFIELD
+ if (s.spins[i].x == false) {
+#else
+ if (s.spins[i].x == s.R.x) {
+#endif
+ glColor3f(0.0, 0.0, 0.0);
+ } else {
+ glColor3f(1.0, 1.0, 1.0);
+ }
+ glRecti(i / s.L, i % s.L, (i / s.L) + 1, (i % s.L) + 1);
+ }
+ glFlush();
+ };
+#endif
+ } else {
+ other_f = [] (const state_t<z2_t, ising_t>& s) {};
+ }
+
+ std::function <void(const state_t<z2_t, ising_t>&)> measurements = measure_function_write_files(measurement_flags, outfiles, other_f);
+
+ // add line to metadata file with run info
+ {
+ FILE *outfile_info = fopen("wolff_metadata.txt", "a");
+
+ fprintf(outfile_info, "<| \"ID\" -> %lu, \"MODEL\" -> \"ISING\", \"q\" -> 2, \"D\" -> %" PRID ", \"L\" -> %" PRIL ", \"NV\" -> %" PRIv ", \"NE\" -> %" PRIv ", \"T\" -> %.15f, \"H\" -> %.15f |>\n", timestamp, s.D, s.L, s.nv, s.ne, T, H);
+
+ fclose(outfile_info);
+ }
+
+ // run wolff for N cluster flips
+ if (N_is_sweeps) {
+ count_t N_rounds = 0;
+ printf("\n");
+ while (sum_of_clusterSize < N * s.nv) {
+ printf("\033[F\033[J\033[F\033[JWOLFF: sweep %" PRIu64 " / %" PRIu64 ": E = %.2f, S = %" PRIv "\n", (count_t)((double)sum_of_clusterSize / (double)s.nv), N, s.E, s.last_cluster_size);
+ wolff(N, s, gen_R, measurements, rng, silent);
+ N_rounds++;
+ }
+ printf("\033[F\033[J\033[F\033[JWOLFF: sweep %" PRIu64 " / %" PRIu64 ": E = %.2f, S = %" PRIv "\n\n", (count_t)((double)sum_of_clusterSize / (double)s.nv), N, s.E, s.last_cluster_size);
+ } else {
+ wolff(N, s, gen_R, measurements, rng, silent);
+ }
+
+ measure_free_files(measurement_flags, outfiles);
+
+ return 0;
+
+}
+
--
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