mps - 3D incompressible fluid dynamics solver by using moving particle semi-implicit(MPS) method with Fortran.
the code is parallelized by OpenMP.
moving particle semi-implicit(MPS) method: http://li.mit.edu/Stuff/CNSE/Paper/Koshizuka96Oka.pdf
how to run:
$ vi mps.F90 # adjust the parameters
$ make
$ ./mps
$ ./create_anime.sh
- create the animation by matplotlib
- remove some overheads(e.g. many use of function distance())
- use OpenACC/CUDA
- implement ICCG method and replace CG method with it
- create a function to find neighbor particles in the effective radius(using hash table is better?)
- continue the verification
- parallelize the code by MPI
- still some particles are running away from the box, so modify the code not to calculate the escaped particles
parameter setting for the performance comparison:
nparticles_fluid = (/8, 16,16/)
nparticles_box = (/32,16,16/)
dist_particles = 7.5d-2
tol = 1.0d-10
dt = 3.0d-3
tstep_max = 20
freq_write = 20
Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz, 28 cores, with AVX2
wtih 1 core : 214.4s
with 28 cores: 29.3s
a calculation result(water collapse in a box) is below.
in this case, size of the box is 2.4x1.2x1.2(m), size of the water in the initial state is 0.6x1.2x1.2(m), time is 0.0~6.0(s)(2000 steps).
it took about 1 hour with 28 cores to calculate the process.
