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ReCo.jl/src/run.jl
2022-01-26 14:39:42 +01:00

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function empty_hook(args...)
return nothing
end
function gen_cell_list_box(half_box_len::Float64, skin_r::Float64)
return CellListMap.Box(SVector(2 * half_box_len, 2 * half_box_len), skin_r)
end
function run_sim(
dir::String;
duration::Float64,
snapshot_at::Float64=0.1,
seed::Int64=42,
n_bundle_snapshots::Int64=100,
env_helper::Union{RL.EnvHelper,Nothing}=nothing,
show_progress::Bool=true,
)
@assert length(dir) > 0
@assert duration > 0
@assert snapshot_at in 0.001:0.001:duration
@assert seed > 0
@assert n_bundle_snapshots >= 0
Random.seed!(seed)
sim_consts::SimConsts = JLD2.load_object("$dir/sim_consts.jld2")
integration_steps = floor(Int64, duration / sim_consts.δt) + 1
n_steps_before_snapshot = round(Int64, snapshot_at / sim_consts.δt)
n_snapshots = floor(Int64, integration_steps / n_steps_before_snapshot) + 1
@assert (n_snapshots - 1) * snapshot_at == duration
n_bundle_snapshots = min(n_snapshots, n_bundle_snapshots)
sim_state::SimState = JLD2.load_object("$dir/sim_state.jld2")
n_bundles = sim_state.n_bundles
T0::Float64 = sim_state.T
T = T0 + duration
if n_bundle_snapshots > 0
save_data = true
else
save_data = false
end
@async begin
start_datetime = Dates.now()
run_params = RunParams(
# Input
duration,
snapshot_at,
seed,
n_bundle_snapshots,
# Internal
integration_steps,
n_steps_before_snapshot,
n_snapshots,
T,
T0,
start_datetime,
)
next_bundle = n_bundles + 1
runs_dir = "$dir/runs"
if save_data
JLD2.save_object("$runs_dir/run_params_$next_bundle.jld2", run_params)
end
end
bundles_dir = "$dir/bundles"
bundle::Bundle = JLD2.load_object("$bundles_dir/$n_bundles.jld2")
particles = gen_particles(bundle, sim_consts.n_particles)
args = (
v₀=sim_consts.v₀,
δt=sim_consts.δt,
skin_r=sim_consts.skin_r,
skin_r²=sim_consts.skin_r^2,
n_snapshots=n_snapshots,
ϵσ⁶δtμₜ24=24 * sim_consts.ϵ * sim_consts.σ^6 * sim_consts.δt * sim_consts.μₜ,
σ⁶2=2 * sim_consts.σ^6,
sqrt_Dₜδt2=sqrt(2 * sim_consts.Dₜ * sim_consts.δt),
sqrt_Dᵣδt2=sqrt(2 * sim_consts.Dᵣ * sim_consts.δt),
v₀δt=sim_consts.v₀ * sim_consts.δt,
μₜ=sim_consts.μₜ,
interaction_r=sim_consts.interaction_r,
interaction_r²=sim_consts.interaction_r^2,
n_particles=sim_consts.n_particles,
half_box_len=sim_consts.half_box_len,
particles=particles,
particles_c=[particles[i].c for i in 1:(sim_consts.n_particles)],
verlet_lists=[
PreVector{Int64}(sim_consts.n_particles - i) for
i in 1:(sim_consts.n_particles - 1)
],
n_bundle_snapshots=n_bundle_snapshots,
bundle=Bundle(sim_consts.n_particles, n_bundle_snapshots),
box=gen_cell_list_box(sim_consts.half_box_len, sim_consts.skin_r),
show_progress=show_progress,
)
simulate!(
args,
T0,
T,
sim_consts.n_steps_before_verlet_list_update,
n_steps_before_snapshot,
n_bundles,
dir,
save_data,
env_helper,
)
return nothing
end