Ppopp Supplementary

PPoPP Supplementary

Decide what lives in the 10 reviewed pages (text and figures, two-column acmart) and what moves to the artifact or an appendix. The governing rule at PPoPP is decision-criticality: anything a reviewer must read to be convinced the result is correct under concurrency and scales stays in the body. References are unlimited and free; body space is the scarce resource.

The decision-criticality test

For each candidate piece of content, ask: would a reviewer's accept/reject change if they could not see this?

[Decides acceptance]  the correctness argument's core, the headline scaling curve, the baseline
                      comparison, the key design insight  -> BODY (inside 10 pages)
[Supports/confirms]   full linearizability proof details, every core-count data point, additional
                      workloads, sensitivity sweeps, extra GPUs  -> ARTIFACT / APPENDIX
[Bulk / mechanical]   raw logs, per-run tables, generator internals, build scripts  -> ARTIFACT

The failure mode PPoPP punishes is burying a load-bearing argument — the linearization points, the one plot that shows saturation — outside the reviewed pages, so the reviewer cannot judge the claim and defaults to skepticism.

What must stay in the body

• The correctness argument's spine. The property (linearizability/progress), the linearization points or the key invariant, and why it holds under the named memory model. The full formal proof can move; the argument a reviewer needs to believe it cannot.
• The headline scaling evidence. At least one clear speedup/throughput curve over core or thread count, with the baseline and machine named in the caption.
• The baseline comparison that substantiates the delta over prior work.
• The design insight that makes the parallelism work — the idea, not every implementation detail.

What can move out

• Full proofs and case analyses — keep the argument in the body, push the exhaustive case split to an appendix or the artifact.
• Complete sweeps — the body shows the representative curve; the artifact holds every thread count, socket configuration, input size, and GPU.
• Additional workloads and sensitivity studies that confirm rather than establish the claim.
• Reproduction machinery — Dockerfiles, scripts, raw data, and per-run numbers belong in the artifact (see ppopp-artifact-evaluation).

Where "out" is at PPoPP

• The artifact is the primary home for bulk evidence and is evaluated post-acceptance — reviewers of the paper are not obligated to run it, so it cannot carry a decision-critical claim at review time.
• An appendix, if the call permits one within submission rules, is read at the reviewer's discretion — do not put anything acceptance-deciding there and assume it was read. Confirm the current appendix policy each cycle (待核实 if unstated).

Because the artifact is post-acceptance, the split at PPoPP is stricter than at venues that review the artifact alongside the paper: if the reviewer must see it to say yes, it is in the 10 pages.

Keeping the body legible under the page cap

• Use small multiples to compress a core sweep into one figure rather than five.
• Move exhaustive tables to the artifact and keep a summarizing plot in the body.
• Cut prose before cutting evidence; the correctness argument and the scaling curve are the last things to shrink.

Output format

[Body (<=10pp)] correctness spine + headline curve + baseline + design insight all present?
[Moved out] proofs-detail / full sweeps / extra workloads / repro machinery -> artifact/appendix
[Decision-critical check] anything acceptance-deciding placed outside the body? (must be none)
[Appendix policy] permitted this cycle? confirmed / 待核实
[Space recovered] figures merged / tables moved to hit 10 pages