From: Christophe Raffalli <christophe@raffalli.eu>
To: Florian Angeletti <florian.angeletti@inria.fr>, caml-list@inria.fr
Subject: [Caml-list] Sequential speed 4.12.0 vs 4.13.1 vs multicore (Was: The road to OCaml 5.0)
Date: Fri, 8 Oct 2021 14:07:22 -1000 [thread overview]
Message-ID: <20211009000722.otsy76prtixl226t@oulala> (raw)
In-Reply-To: <20211008203420.krbaicozculplmfk@oulala>
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Hello,
I managed to install ocaml 4.12.0 with multicore. I could not parallelise my
code in 5mn ;-) but I check just the sequential speed and got a bit
surprised. On the same examples, same options (flambda everywhere), etc ...
Ex 1 Ex 2 Ex 3
4.13.1 normal 45s 12s 49s
4.12.0 normal 36s 11s 45s
4.12.0 multicore 31s 10s 40s
These are not small differences and it is rather surprising that
4.13.1 is significantly slower than 4.12.0 (20 to 25%)
4.12.0 + multicore is faster on sequential code.
Other people observe the same ?
Any idea ? Should I report an issue for the speed degradation of 4.13.1 ?
Christophe
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next prev parent reply other threads:[~2021-10-09 0:07 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 ` Christophe Raffalli [this message]
2021-10-09 0:58 ` [Caml-list] Sequential speed 4.12.0 vs 4.13.1 vs multicore (Was: The road to OCaml 5.0) 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
2021-10-09 17:14 ` ygrek
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