From e44e2da31a4240600590eb9a564db0e0e586cba1 Mon Sep 17 00:00:00 2001 From: Jaron Kent-Dobias Date: Mon, 23 Jul 2018 14:04:13 -0400 Subject: anddddd also did the (trivial) continuous gaussian model by flipping all the int64_ts in dgm to doubles --- CMakeLists.txt | 6 +- src/wolff_cgm.cpp | 163 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 168 insertions(+), 1 deletion(-) create mode 100644 src/wolff_cgm.cpp diff --git a/CMakeLists.txt b/CMakeLists.txt index 84c8fb3..b412742 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -17,6 +17,7 @@ file(GLOB CPPSOURCES lib/*.cpp) add_executable(wolff_finite src/wolff_finite.c ${CSOURCES}) add_executable(wolff_ising src/wolff_ising.cpp ${CPPSOURCES} ${CSOURCES}) add_executable(wolff_dgm src/wolff_dgm.cpp ${CPPSOURCES} ${CSOURCES}) +add_executable(wolff_cgm src/wolff_cgm.cpp ${CPPSOURCES} ${CSOURCES}) add_executable(wolff_3potts src/wolff_potts.cpp ${CPPSOURCES} ${CSOURCES}) add_executable(wolff_4potts src/wolff_potts.cpp ${CPPSOURCES} ${CSOURCES}) add_executable(wolff_planar src/wolff_On.cpp ${CPPSOURCES} ${CSOURCES}) @@ -41,23 +42,26 @@ target_link_libraries(analyze_correlations cblas gsl fftw3 m) if (${GLUT} MATCHES "GLUT-NOTFOUND") target_link_libraries(wolff_ising cblas gsl m) target_link_libraries(wolff_dgm cblas gsl m) + target_link_libraries(wolff_cgm cblas gsl m) target_link_libraries(wolff_3potts cblas gsl m) target_link_libraries(wolff_heisenberg cblas gsl m) target_link_libraries(wolff_planar cblas gsl m) else() target_link_libraries(wolff_ising cblas gsl m glut GL GLU) target_link_libraries(wolff_dgm cblas gsl m glut GL GLU) + target_link_libraries(wolff_cgm cblas gsl m glut GL GLU) target_link_libraries(wolff_3potts cblas gsl m glut GL GLU) target_link_libraries(wolff_4potts cblas gsl m glut GL GLU) target_link_libraries(wolff_heisenberg cblas gsl m glut GL GLU) target_link_libraries(wolff_planar cblas gsl m glut GL GLU) target_compile_definitions(wolff_ising PUBLIC HAVE_GLUT) target_compile_definitions(wolff_dgm PUBLIC HAVE_GLUT) + target_compile_definitions(wolff_cgm PUBLIC HAVE_GLUT) target_compile_definitions(wolff_3potts PUBLIC HAVE_GLUT) target_compile_definitions(wolff_4potts PUBLIC HAVE_GLUT) target_compile_definitions(wolff_planar PUBLIC HAVE_GLUT) target_compile_definitions(wolff_heisenberg PUBLIC HAVE_GLUT) endif() -install(TARGETS wolff_finite wolff_ising wolff_dgm wolff_3potts wolff_heisenberg wolff_planar analyze_correlations DESTINATION bin) +install(TARGETS wolff_finite wolff_ising wolff_dgm wolff_cgm wolff_3potts wolff_heisenberg wolff_planar analyze_correlations DESTINATION bin) diff --git a/src/wolff_cgm.cpp b/src/wolff_cgm.cpp new file mode 100644 index 0000000..559f6fc --- /dev/null +++ b/src/wolff_cgm.cpp @@ -0,0 +1,163 @@ + +#include + +#ifdef HAVE_GLUT +#include +#endif + +// include your group and spin space +#include +#include + +// include wolff.h +#include + +typedef state_t , height_t> sim_t; + +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; + + bool silent = false; + bool draw = false; + unsigned int window_size = 512; + double epsilon = 1; + + int opt; + + while ((opt = getopt(argc, argv, "N:D:L:T:H:sdw:e:")) != -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. nth call couples to state n + H = atof(optarg); + break; + case 'e': // external field. nth call couples to state n + epsilon = atof(optarg); + break; + case 's': // don't print anything during simulation. speeds up slightly + silent = 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; + default: + exit(EXIT_FAILURE); + } + } + + // initialize random number generator + gsl_rng *r = gsl_rng_alloc(gsl_rng_mt19937); + gsl_rng_set(r, rand_seed()); + + // define spin-spin coupling + std::function , height_t)> Z = [] (height_t h1, height_t h2) -> double { + return -pow(h1.x - h2.x, 2); + }; + + // define spin-field coupling + std::function )> B = [=] (height_t h) -> double { + return -H * pow(h.x, 2);; + }; + + // initialize state object + sim_t s(D, L, T, Z, B); + + // define function that generates self-inverse rotations + std::function (gsl_rng *, height_t)> gen_R = [=] (gsl_rng *r, height_t h) -> dihedral_inf_t { + dihedral_inf_t rot; + rot.is_reflection = true; + + double amount = epsilon * gsl_ran_ugaussian(r); + + rot.x = 2 * h.x + amount; + + return rot; + }; + + // define function that updates any number of measurements + std::function measurement; + + double average_M = 0; + if (!draw) { + // a very simple example: measure the average magnetization + measurement = [&] (const sim_t *s) { + average_M += (double)s->M / (double)N / (double)s->nv; + }; + } else { + // a more complex example: measure the average magnetization, and draw the spin configuration to the screen + + // 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); + + measurement = [&] (const sim_t *s) { + average_M += (double)s->M / (double)N / (double)s->nv; + glClear(GL_COLOR_BUFFER_BIT); + double max_h = INT64_MIN; + double min_h = INT64_MAX; + for (v_t i = 0; i < pow(L, 2); i++) { + double cur_h = act_inverse(s->R, s->spins[i]).x; + if (cur_h < min_h) { + min_h = cur_h; + } + if (cur_h > max_h) { + max_h = cur_h; + } + } + + for (v_t i = 0; i < pow(L, 2); i++) { + double cur_h = act_inverse(s->R, s->spins[i]).x; + double mag = ((double)(cur_h - min_h)) / ((double)(max_h - min_h)); + glColor3f(mag, mag, mag); + glRecti(i / L, i % L, (i / L) + 1, (i % L) + 1); + } + glFlush(); + }; + } + + // run wolff for N cluster flips + wolff(N, &s, gen_R, measurement, r, silent); + + // tell us what we found! + printf("%" PRIcount " DGM runs completed. D = %" PRID ", L = %" PRIL ", T = %g, H = %g, = %g\n", N, D, L, T, H, average_M); + + // free the random number generator + gsl_rng_free(r); + + if (draw) { + } + + return 0; + +} + -- cgit v1.2.3-70-g09d2