Re: map-par slower than map

[Maxime Devos <maximedevos@telenet.be>]

[-- Attachment #1.1.1: Type: text/plain, Size: 1040 bytes --]



On 12-10-2022 22:20, Damien Mattei wrote:
> Mutex? i do not think code has situation where dead lock could happen, 
> it is a code about minimalising logic expressions, it uses minterms , 
> minterms set is a set of minterms :like this:

I didn't mean deadlocks, I just meant a single mutex being taken by all 
the threads.

Also, you seem to have a global hash table on line 1603 -- presumably 
there's a mutex in there (and even if not, likely there are CPU cache 
issues).

> [...]

I propose to minimise this complicated test case (doesn't need to be 
equivalent, just needs to demonstrate the 'map-par slower than map') and 
to change it to standard-ish Scheme instead of your Scheme+ variant.

> On Wed, Oct 12, 2022 at 8:45 PM Maxime Devos <maximedevos@telenet.be 
> <mailto:maximedevos@telenet.be>> wrote:
>
> [rest of copied previous message, without any comments]

This is top-posting.  For why not to top-post, 
https://wiki.lyx.org/FAQ/ListNetiquette has various information.

Greetings,
Maxime.

[-- Attachment #1.1.2: OpenPGP public key --]
[-- Type: application/pgp-keys, Size: 929 bytes --]

[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 236 bytes --]