From 0a0dc4d5080ce6d1ddfa5333b55b64f2a83f22c4 Mon Sep 17 00:00:00 2001
From: ChrisRackauckas-Claude <accounts@chrisrackauckas.com>
Date: Sat, 12 Sep 2026 00:31:43 -0400
Subject: [PATCH] Add AirspeedVelocity benchmarking CI

Adds a benchmark workflow (Julia 1 and lts) and a benchmark/benchmarks.jl
suite covering representative workloads so PRs check for performance
regressions.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Agent-Harness: devin 3000.10.21
Agent-Model: SWE-2 Max
Agent-Session: local session transcript /home/crackauc/.local/share/devin/cli/summaries/history_ccb52064e6514b21.md
---
 .github/workflows/benchmark.yml | 29 +++++++++++++++++++++++
 benchmark/benchmarks.jl         | 41 +++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 .github/workflows/benchmark.yml
 create mode 100644 benchmark/benchmarks.jl

diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
new file mode 100644
index 00000000..750b9670
--- /dev/null
+++ b/.github/workflows/benchmark.yml
@@ -0,0 +1,29 @@
+name: Benchmark this PR
+
+on:
+  pull_request:
+    branches: [master]
+    paths-ignore: ['docs/**']
+
+permissions:
+  pull-requests: write
+  contents: read
+
+jobs:
+  benchmark:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        version: ["1", "lts"]
+    env:
+      # Force consistent Julia depot path for self-hosted runners
+      JULIA_DEPOT_PATH: ~/.julia
+    steps:
+      - uses: MilesCranmer/AirspeedVelocity.jl@action-v1
+        with:
+          julia-version: ${{ matrix.version }}
+          script: "benchmark/benchmarks.jl"
+          extra-pkgs: ""
+          job-summary: true
diff --git a/benchmark/benchmarks.jl b/benchmark/benchmarks.jl
new file mode 100644
index 00000000..9ca1615e
--- /dev/null
+++ b/benchmark/benchmarks.jl
@@ -0,0 +1,41 @@
+using Pkg
+# Monorepo: the libraries live in lib/ — develop them so we benchmark this
+# checkout's code, not the registered versions.
+for lib in (
+        "ODEProblemLibrary", "DAEProblemLibrary", "DDEProblemLibrary",
+        "SDEProblemLibrary", "JumpProblemLibrary", "BVProblemLibrary",
+        "NonlinearProblemLibrary",
+    )
+    Pkg.develop(path = joinpath(@__DIR__, "..", "lib", lib))
+end
+
+using ODEProblemLibrary, DAEProblemLibrary, NonlinearProblemLibrary
+using BVProblemLibrary
+using BenchmarkTools
+
+const SUITE = BenchmarkGroup()
+
+# =============================================================================
+# Problem library loading (the package's job: constructing problems)
+# =============================================================================
+
+SUITE["ode"] = BenchmarkGroup()
+
+SUITE["ode"]["vanderpol"] = @benchmarkable ODEProblemLibrary.prob_ode_vanderpol
+SUITE["ode"]["lorenz"] = @benchmarkable ODEProblemLibrary.prob_ode_lorenz
+SUITE["ode"]["rober"] = @benchmarkable ODEProblemLibrary.prob_ode_rober
+SUITE["ode"]["brusselator_1d"] = @benchmarkable ODEProblemLibrary.prob_ode_brusselator_1d
+SUITE["ode"]["pleiades"] = @benchmarkable ODEProblemLibrary.prob_ode_pleiades
+SUITE["ode"]["hires"] = @benchmarkable ODEProblemLibrary.prob_ode_hires
+
+SUITE["dae"] = BenchmarkGroup()
+
+SUITE["dae"]["resrob"] = @benchmarkable DAEProblemLibrary.prob_dae_resrob
+
+SUITE["nonlinear"] = BenchmarkGroup()
+
+SUITE["nonlinear"]["testcase_lookup"] = @benchmarkable NonlinearProblemLibrary.nlprob_23_testcases["Generalized Rosenbrock function"]
+
+SUITE["bvp"] = BenchmarkGroup()
+
+SUITE["bvp"]["linear_1"] = @benchmarkable BVProblemLibrary.prob_bvp_linear_1