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Make the benchmark harness build optimized binaries on Chez (#220)

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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>
This commit is contained in:
Dmitri Sotnikov 2026-06-26 04:59:52 +00:00 • committed by GitHub
parent f3084f8043
commit 93ddf2c85a
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11 changed files with 136 additions and 92 deletions
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bench/binary_trees.clj
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@ -4,8 +4,7 @@
;; targets and the ray tracer never exercises (~7% alloc).
;;
;; Portable Clojure: runs on jolt and JVM Clojure for cross-impl comparison.
;; jolt -m binary-trees 14 (JOLT_DIRECT_LINK=1 JOLT_WHOLE_PROGRAM=1)
;; clojure -M -m binary-trees 14
;; bench/run.sh binary-trees 14
(ns binary-trees)
(defrecord Node [left right])