trueke: multi-GPU Monte Carlo for the 3D RFIM

(1) Hardware requirements:

A CUDA capable GPU, we recommend Kepler+
4GB of RAM
Multi-core X86_64 CPU

(2) Software requirements:

Linux OS
GCC.
Nvidia CUDA runtime library
Nvidia nvcc compiler
[optional] Nvidia nvlm (to query the device).
OpenMP 4.0 Implementation

(3) Check Makefile and CUDA instalation.

Make sure the bin, inc and lib paths to the corresponding ones.

(4) compilation (edit Makefile if necessary)

make clean
make

(5) how to run

./bin/trueke -l <L> <R> -t <T> <dT> -a <tri> <ins> <pts> <ms> -h <h> -s <pts> <mz> <eq> <ms> <meas> <per> -br <b> <r> -z <seed> -g <x>

(6) parameters

Lattice (-l): size <L>, <R> replicas.
Temperature (-t): high-temp <T>, delta <dT>.
Adaptive (-a): <tri> trials, <ins> inserts/trial, <pts> exchange steps, <ms> sweeps per exchange.
External Field (-h): magnetic field strength <h> (tipically, 0 < h < 3).
Simulation (-s): <pts> ex, meas at <mz>, equil <eq> sweeps, <ms> sweeps/ex, <per> ex/<meas>
Repetition (-br): <b> blocks of <ms>, <r> disorder realizations.
Seed (-z): use <seed> as base seed for the PRNGs.
Multi-GPU (-g): use <x> GPUs.

(4) Example execution using two GPUs

./bin/trueke -l 64 11 -t 4.7 0.1 -a 58 2 2000 10 -h 1.0 -s 5000 3000 100 5 1 1 -br 1 2000 -z 7919 -g 2