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-------------------------------------------------------------------------------- Separation: - separation will do a separation after the integration if given an output file. There is also an argument to set the random number seed. -------------------------------------------------------------------------------- Nbody: - Simulations are described with Lua input files which can be used to produce an arbitrary initial configuration of particles. - Various options are available for applying external potentials to a system. - Graphics can be run separately and attach to existing simulations, or can be launched at the same time with the --visualizer argument to the main process. - N-body videos can be produced by using a separate program to record OpenGL. A wrapper script that uses this can be used as the --visualizer-bin argument to record a video of the visualization. An example script is at tools/RecordNBodyVideo.sh - Consistent N-body results between different systems require crlibm and SSE2 (at least on x86, not sure about other architectures) - Returning nil from makePotential() for N-body will run the simulation without an external potential - Device information is exposed to the workunit through the deviceInfo table if it is used. Tests can be run by running: $ make test However this runs all of the tests, which takes forever. You can run (from the tests directory) some core functionality tests with: $ make check Other tests can be run with a certain number of bodies depending on how long you want to wait with: $ make test_${n} Currently n = 100, 1024, 10000 are available. -------------------------------------------------------------------------------- TAO: *TODO: update for latest tao version -Maximum Likelihood Evaluation Code for running milkyway separation program -Note: Lua files for TAO searches are different from those used by the separation code. -The terminal output from this program appears confusing since it mixes the output of each separation run with that of TAO. Using the linux ">" operator to port output to a file only takes the TAO output, making it much clearer. To run call: $ ./TAO <options> General required options: --separation "<path/to/separation_binary>" --stars "<path/to/stars_file>" --params "<path/to/search_paramaters_file>" --search_type <options> search type options: de - differential evolution ps - particle swarm snm - synchronous newton method gd - gradient descent cgd - conjugate gradient descent sweep - paramater sweep Search Specific Options: de: optional: --population_size <int> (default:200) --maximum_iterations <int> (default:will run forever - Ctrl-C to kill) --maximum_created <int> (default:will run forever - Ctrl-C to kill) --maximum_reported <int> (default:will run forever - Ctrl-C to kill) --parent_scaling_factor <float> (default:1.0) --differential_scaling_factor <float> (default:1.0) --crossover_rate <float> (default:0.5) --int_pairs <int> (default:1) --parent_selection <option> (defualt:best) options: best random current-to-best current-to-random --recombination_selection <option> (default:binary) options: binary exponential sum none ps: optional: --population_size <int> (default:200) --maximum_iterations <int> (default:will run forever - Ctrl-C to kill) --maximum_created <int> (default:will run forever - Ctrl-C to kill) --maximum_reported <int> (default:will run forever - Ctrl-C to kill) --inertia <float> (default:0.75) --global_best_weight <float> (default:1.5) --local_best_weight <float> (default:1.5) --initial_velocity_scale <float> (default:0.25) snm: required: --iterations <int> optional: --rand <double> (randomizes the search parameters by +- the given percent) gd: required: --iterations <int> optional: --loop1_max <int> (default:300 iterations) --loop2_max <int> (default:300 iterations) --nquad <int> (default:4 iterations for loop 3) --tol <double> (default:1e-6 for tolerance of dstar in loop 3) --min_threshold <double_1, double_2, ... , double_n> (default:line search will not quit if the input direction is very small) --rand <double> (randomizes the search parameters by +- the given percent) gd: required: --iterations <int> --cgd_reset <int> **roughly speaking this should be the number of paramaters... optional: --loop1_max <int> (default:300 iterations) --loop2_max <int> (default:300 iterations) --nquad <int> (default:4 iterations for loop 3) --tol <doublMaximum Likelihood Evaluation Code for running milkyway separation program e> (default:1e-6 for tolerance of dstar in loop 3) --min_threshold <double_1, double_2, ... , double_n> (default:line search will not quit if the input direction is very small) --rand <double> (randomizes the search parameters by +- the given percent) --------------------------------------------------------------------------------------------------- Random notes: - All give usage with --help/-? arguments make nbody_release and make separation_release will produce release tarballs if git and xz are installed and found. - Make sure when building with MSVC to set built to use Multithreaded (/MT) for the builds of the various libraries
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