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From: Christophe Raffalli <>
To: Xavier Leroy <>
Cc: caml users <>
Subject: Re: [Caml-list] Sequential speed 4.12.0 vs 4.13.1 vs multicore (Was: The road to OCaml 5.0)
Date: Sat, 9 Oct 2021 17:37:50 -1000	[thread overview]
Message-ID: <20211010033750.rxa23jdifilpdetr@oulala> (raw)
In-Reply-To: <>

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First I have cleaned the inlining instruction and get better result leting
flambda deciding alone. This leads to

36s with 4.13.1 sequential
36s with 4.12.0 sequential
32s with 4.12.0 multicore (but not using any parralelism)

So being more reasonable with inlining annotation yields no more
changes between 4.13.1 and 4.12.0.

Still I am surprised that multicore is better (should expect a bit worth ?)

> Christophe: please put your benchmark online somewhere so that we can make our
> measurements.  Without reproducibility, your initial message is useless. 
> Thanks.

The code is there (it uses functors a lot, could be a good bench for flambda):

and depends from (opam version might not be sufficient)

and other opam packages.

If you "opam pin ." the three git repos above everything should work.

The command to test:

dune exec --release Hyper -- tests/hard/hilbert-sextic.txt -b

It prints its own timing as below among other messages:
   total:   36.329s (   0.012s self) for      1 call(s)

You can use other files in tests or tests/hard.

> - Xavier Leroy

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  reply	other threads:[~2021-10-10  3:38 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-07  9:48 [Caml-list] The road to OCaml 5.0 Florian Angeletti
2021-10-08  1:42 ` Francois Berenger
2021-10-08 20:34 ` Christophe Raffalli
2021-10-09  0:07   ` [Caml-list] Sequential speed 4.12.0 vs 4.13.1 vs multicore (Was: The road to OCaml 5.0) Christophe Raffalli
2021-10-09  0:58     ` Michael Bacarella
2021-10-09  1:11       ` Michael Bacarella
2021-10-09  1:20         ` Michael Bacarella
2021-10-09  2:10       ` Christophe Raffalli
2021-10-09 17:20         ` Xavier Leroy
2021-10-10  3:37           ` Christophe Raffalli [this message]
2021-10-09 17:14     ` ygrek

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