93ddf2c85a
bench/run.sh was Janet-era: it invoked a 'jolt' binary and set JOLT_DIRECT_LINK/JOLT_WHOLE_PROGRAM, none of which exist on Chez, where 'joltc run -m' runs fully unoptimized (direct-link and inline default off). So the suite was measuring jolt's unoptimized path. run.sh now compiles each benchmark to an optimized AOT binary (joltc build --direct-link --opt) and times it against JVM Clojure on the same portable source, auto-detecting the Chez kernel dev files like build-smoke.sh. Adds bench/deps.edn so joltc resolves the namespaces, NO_JVM to skip the reference. mandelbrot.clj dropped its jolt.png require so the JVM reference can run it; the picture demo moved to mandelbrot_png.clj (jolt-only). README scorecard refreshed with current Chez numbers and the two-regime read (compute ~8-10x substrate floor; dispatch/alloc ~120-330x architectural gaps the passes don't touch). Stale 'jolt -m' header lines point at bench/run.sh. Co-authored-by: Yogthos <yogthos@gmail.com>
46 lines
1.8 KiB
Clojure
46 lines
1.8 KiB
Clojure
;; collections — PERSISTENT-COLLECTION churn. Builds and reads persistent maps
|
|
;; and vectors (32-way hash/array tries) under heavy assoc/update/conj/lookup, a
|
|
;; word-count-style workload (cf. CLBG k-nucleotide). Exercises jolt's persistent
|
|
;; data structures and (eventually) transients — an axis the ray tracer (fixed
|
|
;; records, no collections in the hot loop) doesn't touch.
|
|
;;
|
|
;; Portable Clojure (jolt + JVM Clojure).
|
|
;; bench/run.sh collections 200000
|
|
(ns collections)
|
|
|
|
;; map churn: accumulate a frequency map over a stream of keys, then sum it back
|
|
(defn freq-map [n buckets]
|
|
(loop [i 0 m {}]
|
|
(if (< i n)
|
|
(recur (inc i)
|
|
(let [k (mod (* i 2654435761) buckets)]
|
|
(assoc m k (+ 1 (get m k 0)))))
|
|
m)))
|
|
|
|
(defn sum-vals [m]
|
|
(reduce (fn [acc k] (+ acc (get m k))) 0 (keys m)))
|
|
|
|
;; vector churn: conj many, then reduce
|
|
(defn vec-sum [n]
|
|
(let [v (loop [i 0 v []] (if (< i n) (recur (inc i) (conj v (mod i 1000))) v))]
|
|
(reduce + 0 v)))
|
|
|
|
(defn run [n]
|
|
(let [m (freq-map n 4096)]
|
|
(+ (sum-vals m) (vec-sum (quot n 4)))))
|
|
|
|
(defn -main [& args]
|
|
(let [n (if (seq args) (Integer/parseInt (first args)) 200000)]
|
|
(dotimes [_ 2] (run (quot n 4))) ; warmup
|
|
(let [runs 3
|
|
times (mapv (fn [_]
|
|
(let [t0 (System/nanoTime)
|
|
r (run n)
|
|
ms (/ (- (System/nanoTime) t0) 1000000.0)]
|
|
[ms r]))
|
|
(range runs))
|
|
mss (mapv first times)
|
|
mean (/ (reduce + mss) runs)]
|
|
(println "collections n" n "result" (second (first times)))
|
|
(println "runs:" (mapv (fn [t] (/ (Math/round (* t 10.0)) 10.0)) mss))
|
|
(println "mean:" (/ (Math/round (* mean 10.0)) 10.0) "ms"))))
|