Hi Wolfgang, The command "nodejs --help --v8-options" seems to print all V8 command line options. It's not clear what runtime checks you would like to adjust. Here are some flags I can think of:
You could use --wasm-lazy-validation to avoid function validation during module compilation and module instantiation, but function validation would still happen lazily when a function gets executed for the first time. If you want to prevent even the lazy function validation, then you have to adjust the code at [1]. You can use `--no-wasm-stack-checks` if you can guarantee that there will not be a stack overflow, e.g. because of an unbounded recursion. You can use `--no-wasm-bounds-checks` if you can guarantee that memory accesses are always in-bounds. Cheers, Andreas [1] https://source.chromium.org/chromium/chromium/src/+/main:v8/src/wasm/function-compiler.cc;l=97;drc=d176526630b2049486a8be93fd89482d0aba6cfc On Sun, Mar 24, 2024 at 7:41 PM Wolfgang <w22639...@gmail.com> wrote: > Hello, > I'm a masters student at Aarhus university. > > We built a provably correct compiler (using Coq) targeting Wasm: Link > <https://womeier.de/files/certicoqwasm-coqpl24-abstract.pdf> > This includes a proof that the modules our compiler generates instantiate > according to the spec, i.e. they are well-typed. > > We are evaluating the performance with Node.js, is there a way to improve > our performance > by e.g. disabling some runtime-checks, given that we have the stronger > correctness guarantees? > > Node.js doesn't seem to have (publicly documented) flags to allow that. > > I included some of our numbers below. > > Best, > Wolfgang > > All times in ms, avarage of 10 runs: > startup=load binary+instantiate > main=main function > pp=pretty printing the result as an S-expression, we call an imported > function > for every character, thus somewhat slow, but not that relevant for > my question > > For a description of the benchmarks, see: Chapter 8.2, > https://zoep.github.io/thesis_final.pdf > > Node.js: v18.19.0: > demo1-opt_coalesce-locals : startup: 6, main: 0, pp: 28, sum: > 34 > demo2-opt_coalesce-locals : startup: 3, main: 0, pp: 8, > sum: 11 > list_sum-opt_coalesce-locals : startup: 3, main: 0, pp: 2, > sum: 5 > vs_easy-opt_coalesce-locals : startup: 10, main: 33, pp: 1, sum: > 44 > vs_hard-opt_coalesce-locals : startup: 10, main: 101, pp: 1, sum: > 112 > binom-opt_coalesce-locals : startup: 18, main: 10, pp: 24, sum: > 52 > sha_fast-opt_coalesce-locals : startup: 65, main: 70, pp: 7, sum: > 142 > color-opt_coalesce-locals : startup: 132, main: 44, pp: 2, > sum: 178 > > Node.js: v20.11.1 > demo1-opt_coalesce-locals : startup: 1, main: 3, pp: 24, sum: > 28 > demo2-opt_coalesce-locals : startup: 2, main: 0, pp: 12, sum: > 14 > list_sum-opt_coalesce-locals : startup: 2, main: 0, pp: 2, > sum: 4 > vs_easy-opt_coalesce-locals : startup: 4, main: 38, pp: 4, sum: > 46 > vs_hard-opt_coalesce-locals : startup: 3, main: 110, pp: 3, sum: > 116 > binom-opt_coalesce-locals : startup: 3, main: 26, pp: 23, sum: > 52 > sha_fast-opt_coalesce-locals : startup: 4, main: 228, pp: 10, sum: > 242 > color-opt_coalesce-locals : startup: 12, main: 332, pp: 2, > sum: 346 > > > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/e7e5b6c8-0f7b-4787-b66f-592f02873950n%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/e7e5b6c8-0f7b-4787-b66f-592f02873950n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- Andreas Haas Software Engineer ah...@google.com Google Germany GmbH Erika-Mann-Straße 33 80636 München Geschäftsführer: Paul Manicle, Liana Sebastian Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: Hamburg Diese E-Mail ist vertraulich. Falls sie diese fälschlicherweise erhalten haben sollten, leiten Sie diese bitte nicht an jemand anderes weiter, löschen Sie alle Kopien und Anhänge davon und lassen Sie mich bitte wissen, dass die E-Mail an die falsche Person gesendet wurde. This e-mail is confidential. If you received this communication by mistake, please don't forward it to anyone else, please erase all copies and attachments, and please let me know that it has gone to the wrong person. -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-dev/CAELSTvdoQ24ZSMXdoAR%2BzaCSQugdefajpbj%2BqSjgf0hDt8-W%2BQ%40mail.gmail.com.
