Add benchmarks

.github/workflows/BenchmarkPRTarget.yml

@@ -0,0 +1,18 @@
+name: Benchmark PR
+on:
+  pull_request_target:
+    branches: [main]
+permissions:
+  pull-requests: write # needed to post comments
+
+jobs:
+  bench:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        julia-version: ["lts", "1", "pre"]
+    steps:
+      - uses: MilesCranmer/AirspeedVelocity.jl@action-v1
+        with:
+          julia-version: ${{ matrix.julia-version }}
+          exeflags: "--threads=auto"

.gitignore

@@ -1,6 +1,8 @@
 *.jl.*.cov
 *.jl.cov
 *.jl.mem
+**/*.json
+**/*.tmp
 *.rej
 .DS_Store
 .benchmarkci

Project.toml

@@ -4,7 +4,7 @@ version = "0.2.3"
 authors = ["Stefan de Lange"]
 
 [workspace]
-projects = ["test", "docs"]
+projects = ["test", "docs", "benchmark", "examples"]
 
 [deps]
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"

benchmark/Project.toml

@@ -0,0 +1,7 @@
+[deps]
+BenchmarkTools = "6e4b80f9-dd63-53aa-95a3-0cdb28fa8baf"
+Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
+SolarPosition = "5b9d1343-a731-5a90-8730-7bf8d89bf3eb"
+
+[sources]
+SolarPosition = { path = ".." }

benchmark/benchmarks.jl

@@ -0,0 +1,90 @@
+"""
+Benchmarks for SolarPosition.jl
+
+Compatible with AirspeedVelocity.jl for benchmarking across package versions.
+
+Run locally with:
+    benchpkg SolarPosition --rev=main,dirty
+
+Or use the Julia API:
+    using BenchmarkTools
+    include("benchmarks/benchmarks.jl")
+    run(SUITE)
+"""
+
+using BenchmarkTools
+using SolarPosition
+using Dates
+
+# ============================================================================
+# Benchmark Suite
+# ============================================================================
+
+const SUITE = BenchmarkGroup()
+
+# ============================================================================
+# Configuration
+# ============================================================================
+
+# Test observer location
+const OBSERVER = Observer(51.5074, -0.1278, 11.0)  # London
+
+# Standard test datetime
+const TEST_DT = DateTime(2024, 6, 21, 12, 0, 0)
+
+# Generate test time vectors of different sizes
+function generate_times(n::Int)
+    return collect(DateTime(2024, 1, 1):Hour(1):(DateTime(2024, 1, 1)+Hour(n-1)))
+end
+
+# Available algorithms to benchmark
+const POSITION_ALGORITHMS = Dict(
+    "PSA" => PSA(2020),
+    "NOAA" => NOAA(),
+    "Walraven" => Walraven(),
+    "USNO" => USNO(),
+    "SPA" => SPA(),
+)
+
+const REFRACTION_ALGORITHMS = Dict(
+    "NoRefraction" => NoRefraction(),
+    "BENNETT" => BENNETT(),
+    "ARCHER" => ARCHER(),
+    "MICHALSKY" => MICHALSKY(),
+    "SG2" => SG2(),
+)
+
+# ============================================================================
+# Single Position Benchmarks
+# ============================================================================
+
+SUITE["single"] = BenchmarkGroup()
+
+for (name, algo) in POSITION_ALGORITHMS
+    SUITE["single"][name] = @benchmarkable(solar_position($(OBSERVER), $TEST_DT, $algo))
+end
+
+# ============================================================================
+# Vector Position Benchmarks (multiple timestamps)
+# ============================================================================
+
+SUITE["vector"] = BenchmarkGroup()
+
+for n in [100, 1_000, 10_000, 100_000]
+    times = generate_times(n)
+    for (name, algo) in POSITION_ALGORITHMS
+        SUITE["vector"]["n=$n,$name"] =
+            @benchmarkable(solar_position($(OBSERVER), $times, $algo))
+    end
+end
+
+# ============================================================================
+# Refraction Algorithm Benchmarks
+# ============================================================================
+
+SUITE["refraction"] = BenchmarkGroup()
+
+for (name, algo) in REFRACTION_ALGORITHMS
+    SUITE["refraction"][name] =
+        @benchmarkable(solar_position($(OBSERVER), $TEST_DT, PSA(), $algo))
+end