Unify argument order in phasepoint and transition

HISTORY.md

@@ -1,5 +1,9 @@
 # AdvancedHMC Changelog
 
+## 0.8.0
+
+  - To make an MCMC transtion from phasepoint `z` using trajectory `τ`(or HMCKernel `κ`) under Hamiltonian `h`, use `transition(h, τ, z)` or `transition(rng, h, τ, z)`(if using HMCKernel, use `transition(h, κ, z)` or `transition(rng, h, κ, z)`).
+
 ## v0.7.1
 
   - README has been simplified, many docs transfered to docs: https://turinglang.org/AdvancedHMC.jl/dev/.

Project.toml

@@ -1,6 +1,6 @@
 name = "AdvancedHMC"
 uuid = "0bf59076-c3b1-5ca4-86bd-e02cd72cde3d"
-version = "0.7.1"
+version = "0.8.0"
 
 [deps]
 AbstractMCMC = "80f14c24-f653-4e6a-9b94-39d6b0f70001"

docs/Project.toml

@@ -4,6 +4,6 @@ Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 DocumenterCitations = "daee34ce-89f3-4625-b898-19384cb65244"
 
 [compat]
-AdvancedHMC = "0.7"
+AdvancedHMC = "0.8"
 Documenter = "1"
 DocumenterCitations = "1"

src/sampler.jl

@@ -54,7 +54,7 @@ function transition(
     (; refreshment, τ) = κ
     @set! τ.integrator = jitter(rng, τ.integrator)
     z = refresh(rng, refreshment, h, z)
-    return transition(rng, τ, h, z)
+    return transition(rng, h, τ, z)
 end
 
 function Adaptation.adapt!(

src/trajectory.jl

@@ -244,10 +244,10 @@ $(SIGNATURES)
 
 Make a MCMC transition from phase point `z` using the trajectory `τ` under Hamiltonian `h`.
 
-NOTE: This is a RNG-implicit fallback function for `transition(Random.default_rng(), τ, h, z)`
+NOTE: This is a RNG-implicit fallback function for `transition(Random.default_rng(), h, τ, z)`
 """
-function transition(τ::Trajectory, h::Hamiltonian, z::PhasePoint)
-    return transition(Random.default_rng(), τ, h, z)
+function transition(h::Hamiltonian, τ::Trajectory, z::PhasePoint)
+    return transition(Random.default_rng(), h, τ, z)
 end
 
 ###
@@ -256,8 +256,8 @@ end
 
 function transition(
     rng::Union{AbstractRNG,AbstractVector{<:AbstractRNG}},
-    τ::Trajectory{TS,I,TC},
     h::Hamiltonian,
+    τ::Trajectory{TS,I,TC},
     z::PhasePoint,
 ) where {TS<:AbstractTrajectorySampler,I,TC<:StaticTerminationCriterion}
     H0 = energy(z)
@@ -665,7 +665,7 @@ function build_tree(
 end
 
 function transition(
-    rng::AbstractRNG, τ::Trajectory{TS,I,TC}, h::Hamiltonian, z0::PhasePoint
+    rng::AbstractRNG, h::Hamiltonian, τ::Trajectory{TS,I,TC}, z0::PhasePoint
 ) where {
     TS<:AbstractTrajectorySampler,I<:AbstractIntegrator,TC<:DynamicTerminationCriterion
 }

test/CUDA/cuda.jl

@@ -11,47 +11,50 @@ using LogDensityProblems
 include(joinpath(@__DIR__, "..", "common.jl"))
 
 @testset "AdvancedHMC GPU" begin
-    n_chains = 1000
-    n_samples = 1000
-    dim = 5
-
-    T = Float32
-    m, s, θ₀ = zeros(T, dim), ones(T, dim), rand(T, dim, n_chains)
-    m, s, θ₀ = CuArray(m), CuArray(s), CuArray(θ₀)
-
-    target = Gaussian(m, s)
-    metric = UnitEuclideanMetric(T, size(θ₀))
-    ℓπ, ∇ℓπ = get_ℓπ(target), get_∇ℓπ(target)
-    hamiltonian = Hamiltonian(metric, ℓπ, ∇ℓπ)
-    integrator = Leapfrog(one(T) / 5)
-    proposal = HMCKernel(Trajectory{EndPointTS}(integrator, FixedNSteps(5)))
-
-    samples, stats = sample(hamiltonian, proposal, θ₀, n_samples)
+    if CUDA.functional()
+        n_chains = 1000
+        n_samples = 1000
+        dim = 5
+        T = Float32
+        m, s, θ₀ = zeros(T, dim), ones(T, dim), rand(T, dim, n_chains)
+        m, s, θ₀ = CuArray(m), CuArray(s), CuArray(θ₀)
+        target = Gaussian(m, s)
+        metric = UnitEuclideanMetric(T, size(θ₀))
+        ℓπ, ∇ℓπ = get_ℓπ(target), get_∇ℓπ(target)
+        hamiltonian = Hamiltonian(metric, ℓπ, ∇ℓπ)
+        integrator = Leapfrog(one(T) / 5)
+        proposal = HMCKernel(Trajectory{EndPointTS}(integrator, FixedNSteps(5)))
+        samples, stats = sample(hamiltonian, proposal, θ₀, n_samples)
+    else
+        println("GPU tests are skipped because no CUDA devices are found.")
+    end
 end
 
 @testset "PhasePoint GPU" begin
-    for T in [Float32, Float64]
-        function init_z1()
-            return PhasePoint(
-                CuArray([T(NaN) T(NaN)]),
-                CuArray([T(NaN) T(NaN)]),
-                DualValue(CuArray(zeros(T, 2)), CuArray(zeros(T, 1, 2))),
-                DualValue(CuArray(zeros(T, 2)), CuArray(zeros(T, 1, 2))),
-            )
+    if CUDA.functional()
+        for T in [Float32, Float64]
+            function init_z1()
+                return PhasePoint(
+                    CuArray([T(NaN) T(NaN)]),
+                    CuArray([T(NaN) T(NaN)]),
+                    DualValue(CuArray(zeros(T, 2)), CuArray(zeros(T, 1, 2))),
+                    DualValue(CuArray(zeros(T, 2)), CuArray(zeros(T, 1, 2))),
+                )
+            end
+            function init_z2()
+                return PhasePoint(
+                    CuArray([T(Inf) T(Inf)]),
+                    CuArray([T(Inf) T(Inf)]),
+                    DualValue(CuArray(zeros(T, 2)), CuArray(zeros(T, 1, 2))),
+                    DualValue(CuArray(zeros(T, 2)), CuArray(zeros(T, 1, 2))),
+                )
+            end
+            z1 = init_z1()
+            z2 = init_z2()
+            @test z1.ℓπ.value == z2.ℓπ.value
+            @test z1.ℓκ.value == z2.ℓκ.value
         end
-        function init_z2()
-            return PhasePoint(
-                CuArray([T(Inf) T(Inf)]),
-                CuArray([T(Inf) T(Inf)]),
-                DualValue(CuArray(zeros(T, 2)), CuArray(zeros(T, 1, 2))),
-                DualValue(CuArray(zeros(T, 2)), CuArray(zeros(T, 1, 2))),
-            )
-        end
-
-        z1 = init_z1()
-        z2 = init_z2()
-
-        @test z1.ℓπ.value == z2.ℓπ.value
-        @test z1.ℓκ.value == z2.ℓκ.value
+    else
+        println("GPU tests are skipped because no CUDA devices are found.")
     end
 end

test/Project.toml

@@ -20,6 +20,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 ReTest = "e0db7c4e-2690-44b9-bad6-7687da720f89"
 Setfield = "efcf1570-3423-57d1-acb7-fd33fddbac46"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 UnicodePlots = "b8865327-cd53-5732-bb35-84acbb429228"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 

test/quality.jl

@@ -1,13 +1,13 @@
 using AdvancedHMC
-using ReTest
+using Test: Test
 using Aqua: Aqua
 using JET
 using ForwardDiff
 
-@testset "Aqua" begin
+Test.@testset "Aqua" begin
     Aqua.test_all(AdvancedHMC)
 end
 
-@testset "JET" begin
+Test.@testset "JET" begin
     JET.test_package(AdvancedHMC; target_defined_modules=true)
 end

test/trajectory.jl

@@ -129,11 +129,11 @@ end
         for τ_test in [τ, τ_with_jittered_lf], seed in [1234, 5678, 90]
             rng = MersenneTwister(seed)
             z = AdvancedHMC.phasepoint(h, θ_init, r_init)
-            z1′ = AdvancedHMC.transition(rng, τ_test, h, z).z
+            z1′ = AdvancedHMC.transition(rng, h, τ_test, z).z
 
             rng = MersenneTwister(seed)
             z = AdvancedHMC.phasepoint(h, θ_init, r_init)
-            z2′ = AdvancedHMC.transition(rng, τ_test, h, z).z
+            z2′ = AdvancedHMC.transition(rng, h, τ_test, z).z
 
             @test z1′.θ == z2′.θ
             @test z1′.r == z2′.r