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Groups > comp.lang.c++ > #91263 > unrolled thread
| Started by | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| First post | 2023-08-16 15:37 +0200 |
| Last post | 2023-08-30 19:02 +0200 |
| Articles | 20 on this page of 146 — 13 participants |
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Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-16 15:37 +0200
Re: Sieve of Eratosthenes wij <wyniijj5@gmail.com> - 2023-08-16 10:57 -0700
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-16 20:21 +0200
Re: Sieve of Eratosthenes wij <wyniijj5@gmail.com> - 2023-08-16 12:17 -0700
Re: Sieve of Eratosthenes Paavo Helde <eesnimi@osa.pri.ee> - 2023-08-16 21:44 +0300
Re: Sieve of Eratosthenes wij <wyniijj5@gmail.com> - 2023-08-16 12:09 -0700
Re: Sieve of Eratosthenes "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2023-08-16 23:17 +0200
Re: Sieve of Eratosthenes "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2023-08-16 23:21 +0200
Re: Sieve of Eratosthenes "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2023-08-16 23:39 +0200
Re: Sieve of Eratosthenes "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2023-08-16 23:59 +0200
Re: Sieve of Eratosthenes "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-08-16 16:27 -0700
Re: Sieve of Eratosthenes red floyd <no.spam.here@its.invalid> - 2023-08-16 18:06 -0700
Re: Sieve of Eratosthenes Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-08-16 19:26 -0700
Re: Sieve of Eratosthenes Öö Tiib <ootiib@hot.ee> - 2023-08-27 12:26 -0700
Re: Sieve of Eratosthenes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2023-08-28 00:49 +0100
Re: Sieve of Eratosthenes Öö Tiib <ootiib@hot.ee> - 2023-08-27 23:23 -0700
Re: Sieve of Eratosthenes "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2023-08-28 15:53 +0200
Re: Sieve of Eratosthenes Öö Tiib <ootiib@hot.ee> - 2023-08-28 09:03 -0700
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-28 18:47 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-30 13:01 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-30 15:38 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-30 18:31 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-31 08:22 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-31 11:00 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-31 15:23 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-31 17:28 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-31 11:52 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-31 15:22 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-31 17:32 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-31 15:44 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-31 17:50 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-09-01 10:26 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-01 12:59 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-09-01 12:30 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-01 15:33 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-09-01 13:49 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-01 15:59 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-09-01 14:03 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-01 16:15 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-09-01 14:39 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-01 16:59 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-09-01 15:01 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-01 17:05 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-09-01 15:08 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-01 17:15 +0200
Re: Sieve of Eratosthenes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2023-08-31 21:33 +0100
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-09-01 05:35 +0200
Re: Sieve of Eratosthenes scott@slp53.sl.home (Scott Lurndal) - 2023-08-31 14:43 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-31 16:57 +0200
Re: Sieve of Eratosthenes scott@slp53.sl.home (Scott Lurndal) - 2023-08-31 16:10 +0000
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-31 15:25 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-31 17:33 +0200
Re: Sieve of Eratosthenes scott@slp53.sl.home (Scott Lurndal) - 2023-08-31 16:12 +0000
Re: Sieve of Eratosthenes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2023-08-28 23:08 +0100
Re: Sieve of Eratosthenes Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-08-28 15:15 -0700
Re: Sieve of Eratosthenes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2023-08-28 23:41 +0100
Re: Sieve of Eratosthenes Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-08-30 17:45 -0700
Re: Sieve of Eratosthenes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2023-08-31 03:18 +0100
Re: Sieve of Eratosthenes Tim Rentsch <tr.17687@z991.linuxsc.com> - 2023-08-28 15:08 -0700
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-17 08:42 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-17 11:38 +0200
Re: Sieve of Eratosthenes "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2023-08-17 12:50 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-17 13:10 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-17 17:47 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-21 11:00 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-21 17:19 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-21 19:50 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-21 18:12 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-21 20:22 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-21 19:01 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 05:27 +0200
Re: Sieve of Eratosthenes Öö Tiib <ootiib@hot.ee> - 2023-08-21 23:25 -0700
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 11:23 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 11:59 +0200
Re: Sieve of Eratosthenes Öö Tiib <ootiib@hot.ee> - 2023-08-22 05:15 -0700
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 14:23 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-22 06:56 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 11:27 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 11:34 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-22 14:13 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 16:17 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-22 14:27 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 16:48 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-22 14:57 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 17:00 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-22 17:56 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 20:13 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-22 18:18 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-22 20:50 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-23 06:51 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 09:59 +0200
Re: Sieve of Eratosthenes Richard Damon <Richard@Damon-Family.org> - 2023-08-23 07:52 -0400
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 14:40 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-23 14:24 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 16:30 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-23 14:36 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 16:38 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-23 14:43 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 16:45 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-23 17:49 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 20:05 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-24 17:18 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-24 19:20 +0200
Re: Sieve of Eratosthenes Daniel <danielaparker@gmail.com> - 2023-08-23 11:13 -0700
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 20:17 +0200
Re: Sieve of Eratosthenes "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-08-23 11:20 -0700
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 20:24 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-24 17:25 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-24 19:29 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-24 17:40 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-24 19:49 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-25 16:07 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-25 18:10 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-25 16:15 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-25 18:18 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-26 08:03 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-26 10:16 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-26 08:27 +0000
Re: Sieve of Eratosthenes Daniel <danielaparker@gmail.com> - 2023-08-23 11:37 -0700
Re: Sieve of Eratosthenes "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-08-26 15:33 -0700
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-23 14:20 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 16:32 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-23 14:41 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 16:47 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-23 17:51 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-23 20:09 +0200
Re: Sieve of Eratosthenes scott@slp53.sl.home (Scott Lurndal) - 2023-08-23 18:51 +0000
Re: Sieve of Eratosthenes "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2023-08-24 11:25 -0700
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-24 17:22 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-24 19:27 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-24 17:37 +0000
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-24 19:52 +0200
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-25 16:07 +0000
Re: Sieve of Eratosthenes Daniel <danielaparker@gmail.com> - 2023-08-23 08:00 -0700
Re: Sieve of Eratosthenes scott@slp53.sl.home (Scott Lurndal) - 2023-08-22 15:49 +0000
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-22 17:58 +0000
Re: Sieve of Eratosthenes scott@slp53.sl.home (Scott Lurndal) - 2023-08-22 18:24 +0000
Re: Sieve of Eratosthenes Muttley@dastardlyhq.com - 2023-08-23 06:50 +0000
Re: Sieve of Eratosthenes wij <wyniijj5@gmail.com> - 2023-08-17 13:43 -0700
Re: Sieve of Eratosthenes "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2023-08-18 02:00 +0200
Re: Sieve of Eratosthenes wij <wyniijj5@gmail.com> - 2023-08-18 05:01 -0700
Re: Sieve of Eratosthenes wij <wyniijj5@gmail.com> - 2023-08-18 17:02 -0700
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-28 06:15 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-28 09:43 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-29 20:34 +0200
Re: Sieve of Eratosthenes Bonita Montero <Bonita.Montero@gmail.com> - 2023-08-30 19:02 +0200
Page 2 of 8 — ← Prev page 1 [2] 3 4 5 6 7 8 Next page →
| From | Muttley@dastardlyhq.com |
|---|---|
| Date | 2023-08-30 15:38 +0000 |
| Message-ID | <ucnnop$2plof$1@dont-email.me> |
| In reply to | #91471 |
On Wed, 30 Aug 2023 13:01:16 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: > if( argc < 3 || *argv[2] ) > ofs.exceptions( ofstream::failbit | ofstream::badbit ), > ofs.open( argc >= 3 ? argv[2] : "primes.txt", ofstream::trunc ), > printBuf.reserve( BUF_SIZE + 31 ); Commas as statement seperators instead of using a bracketed block? Are you posting this code for lols?
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-08-30 18:31 +0200 |
| Message-ID | <ucnqt4$2q4ic$1@dont-email.me> |
| In reply to | #91472 |
Am 30.08.2023 um 17:38 schrieb Muttley@dastardlyhq.com: > On Wed, 30 Aug 2023 13:01:16 +0200 > Bonita Montero <Bonita.Montero@gmail.com> wrote: >> if( argc < 3 || *argv[2] ) >> ofs.exceptions( ofstream::failbit | ofstream::badbit ), >> ofs.open( argc >= 3 ? argv[2] : "primes.txt", ofstream::trunc ), >> printBuf.reserve( BUF_SIZE + 31 ); > Commas as statement seperators instead of using a bracketed block? > Are you posting this code for lols? I often concatenate a small number of statements with the comma-operator to save screen space. I never had any issues with that. That's just a matter of personal taste. If you're noticing this until now, I'm going to assume that you haven't really looked at the previous code. But that's just the syntax issue. My code is also superior in terms of safety (iterator debuggin) and performance (+2/3 more performance with g++ 12 and a Sklake-CPU).
[toc] | [prev] | [next] | [standalone]
| From | Muttley@dastardlyhq.com |
|---|---|
| Date | 2023-08-31 08:22 +0000 |
| Message-ID | <ucpikj$35rda$1@dont-email.me> |
| In reply to | #91473 |
On Wed, 30 Aug 2023 18:31:32 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: >Am 30.08.2023 um 17:38 schrieb Muttley@dastardlyhq.com: >> On Wed, 30 Aug 2023 13:01:16 +0200 >> Bonita Montero <Bonita.Montero@gmail.com> wrote: >>> if( argc < 3 || *argv[2] ) >>> ofs.exceptions( ofstream::failbit | ofstream::badbit ), >>> ofs.open( argc >= 3 ? argv[2] : "primes.txt", ofstream::trunc ), >>> printBuf.reserve( BUF_SIZE + 31 ); > >> Commas as statement seperators instead of using a bracketed block? >> Are you posting this code for lols? > >I often concatenate a small number of statements with the comma-operator >to save screen space. I never had any issues with that. That's just a To save space? Seriously?? >matter of personal taste. If you're noticing this until now, I'm going Its not just personal taste, it makes the code harder to parse for anyone who has to maintain it and could easily lead to logical errors if someone modifies it and forgets to replace the ; with a , at the end. >to assume that you haven't really looked at the previous code. >But that's just the syntax issue. My code is also superior in terms of >safety (iterator debuggin) and performance (+2/3 more performance with >g++ 12 and a Sklake-CPU). Yes, we know how wonderful your code is after you seem to spend multiple days on some trivial task. Obviously no one else could ever manage what you did, you're a coding god.
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-08-31 11:00 +0200 |
| Message-ID | <ucpkqm$364pb$1@dont-email.me> |
| In reply to | #91479 |
Am 31.08.2023 um 10:22 schrieb Muttley@dastardlyhq.com: > To save space? Seriously?? It's my taste. > Its not just personal taste, it makes the code harder to parse for anyone > who has to maintain ... Not true, you just feel unsecure with that for whaterver reason. > Yes, we know how wonderful your code is after you seem to spend multiple days > on some trivial task. ... The task is not trivial if you consider my solution. You won't manage to have it that fast.
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| From | Muttley@dastardlyhq.com |
|---|---|
| Date | 2023-08-31 15:23 +0000 |
| Message-ID | <ucqb8u$3ben2$1@dont-email.me> |
| In reply to | #91480 |
On Thu, 31 Aug 2023 11:00:06 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: >Am 31.08.2023 um 10:22 schrieb Muttley@dastardlyhq.com: > >> To save space? Seriously?? > >It's my taste. > >> Its not just personal taste, it makes the code harder to parse for anyone >> who has to maintain ... > >Not true, you just feel unsecure with that for whaterver reason. You sound like the python devs who claim there's no problem with significant whitespace with indentation.
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-08-31 17:28 +0200 |
| Message-ID | <ucqbjq$3bg6h$1@dont-email.me> |
| In reply to | #91486 |
Am 31.08.2023 um 17:23 schrieb Muttley@dastardlyhq.com: > You sound like the python devs who claim there's no problem with significant > whitespace with indentation. You're too compulsive for that world.
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-08-31 11:52 +0200 |
| Message-ID | <ucpns9$36iap$1@dont-email.me> |
| In reply to | #91479 |
Am 31.08.2023 um 10:22 schrieb Muttley@dastardlyhq.com: > Yes, we know how wonderful your code is after you seem to spend multiple days > on some trivial task. Obviously no one else could ever manage what you did, > you're a coding god. I just benchmarked my code with an upper bound of 1E3 against your code on a Skylake CPU with g++ 12 and -march=native. My code runs about 0.9s, your code takes 5.26s. Any questions ?
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| From | Muttley@dastardlyhq.com |
|---|---|
| Date | 2023-08-31 15:22 +0000 |
| Message-ID | <ucqb70$3beeo$1@dont-email.me> |
| In reply to | #91482 |
On Thu, 31 Aug 2023 11:52:09 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: >Am 31.08.2023 um 10:22 schrieb Muttley@dastardlyhq.com: > >> Yes, we know how wonderful your code is after you seem to spend multiple days > >> on some trivial task. Obviously no one else could ever manage what you did, >> you're a coding god. > >I just benchmarked my code with an upper bound of 1E3 against your code >on a Skylake CPU with g++ 12 and -march=native. My code runs about 0.9s, >your code takes 5.26s. Any questions ? Yes , do you have a life? My code took about 20 mins to write , you seem to have been working on yours for over a week now.
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-08-31 17:32 +0200 |
| Message-ID | <ucqbpu$3bg6h$2@dont-email.me> |
| In reply to | #91485 |
Am 31.08.2023 um 17:22 schrieb Muttley@dastardlyhq.com: > On Thu, 31 Aug 2023 11:52:09 +0200 > Bonita Montero <Bonita.Montero@gmail.com> wrote: >> Am 31.08.2023 um 10:22 schrieb Muttley@dastardlyhq.com: >> >>> Yes, we know how wonderful your code is after you seem to spend multiple days >> >>> on some trivial task. Obviously no one else could ever manage what you did, >>> you're a coding god. >> >> I just benchmarked my code with an upper bound of 1E3 against your code >> on a Skylake CPU with g++ 12 and -march=native. My code runs about 0.9s, >> your code takes 5.26s. Any questions ? > > Yes , do you have a life? My code took about 20 mins to write , you seem to > have been working on yours for over a week now. You complained about my code and I explained why it was more complex. You probably have nothing more to say about that. With the questions you usually ask about C++, I assume that you would not be able to write such secure and performance code. Writing performant code is part of my job. I write software for high frequency trading, so you have to think about which constructs result in which code and how efficient it is.
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| From | Muttley@dastardlyhq.com |
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| Date | 2023-08-31 15:44 +0000 |
| Message-ID | <ucqcgo$3bks0$1@dont-email.me> |
| In reply to | #91489 |
On Thu, 31 Aug 2023 17:32:15 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: >Writing performant code is part of my job. I write software for high >frequency trading, so you have to think about which constructs result >in which code and how efficient it is. HFC is far more impacted by network delays than any minor inefficiencies in the software. Its highly I/O bound.
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-08-31 17:50 +0200 |
| Message-ID | <ucqcrv$3bm0r$1@dont-email.me> |
| In reply to | #91491 |
Am 31.08.2023 um 17:44 schrieb Muttley@dastardlyhq.com: > HFC is far more impacted by network delays than any minor inefficiencies in > the software. Its highly I/O bound. Read the Wikipedia article about HFC then you won't need to elaborate everything by your own ideas.
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| From | Muttley@dastardlyhq.com |
|---|---|
| Date | 2023-09-01 10:26 +0000 |
| Message-ID | <ucse7r$3o73g$1@dont-email.me> |
| In reply to | #91492 |
On Thu, 31 Aug 2023 17:50:24 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: >Am 31.08.2023 um 17:44 schrieb Muttley@dastardlyhq.com: > >> HFC is far more impacted by network delays than any minor inefficiencies in >> the software. Its highly I/O bound. > >Read the Wikipedia article about HFC then you won't need to elaborate >everything by your own ideas. I worked in finance for almost 10 years and was involved in writing the network layer to link a particular bank to a number of stock exchanges so I do know what I'm talking about. The microsecond delays in software are statistical noise compared to the millisecond delays on network connections.
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-09-01 12:59 +0200 |
| Message-ID | <ucsg79$3oec8$1@dont-email.me> |
| In reply to | #91500 |
Am 01.09.2023 um 12:26 schrieb Muttley@dastardlyhq.com: > I worked in finance for almost 10 years and was involved in writing the > network layer to link a particular bank to a number of stock exchanges so > I do know what I'm talking about. ... Certainly not. With high freqency trading sometimes even FPGAs and overclocked CPUs are used. You can verify that easily. My employer has a server with a server attached to a switch which has a further 10GbE link to the worlds largest internet exchange (DE-CIX). We're 250km away from Frankfurt, where the DE-CIX resudes.
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| From | Muttley@dastardlyhq.com |
|---|---|
| Date | 2023-09-01 12:30 +0000 |
| Message-ID | <ucslhh$3p915$1@dont-email.me> |
| In reply to | #91501 |
On Fri, 1 Sep 2023 12:59:53 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: >Am 01.09.2023 um 12:26 schrieb Muttley@dastardlyhq.com: > >> I worked in finance for almost 10 years and was involved in writing the >> network layer to link a particular bank to a number of stock exchanges so >> I do know what I'm talking about. ... > >Certainly not. With high freqency trading sometimes even FPGAs and >overclocked CPUs are used. You can verify that easily. My employer So what? Network delays are still 99.9% of any delay in the process. If people are using those then thats probably for real time processing of market status, not for spot trading. Not that it'll do them any good. People having been trying to write algorithms to predict the market almost since computers were invented and none of them have succeeded to any great extent. >has a server with a server attached to a switch which has a further >10GbE link to the worlds largest internet exchange (DE-CIX). We're >250km away from Frankfurt, where the DE-CIX resudes. And?
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-09-01 15:33 +0200 |
| Message-ID | <ucsp7p$3pnf9$1@dont-email.me> |
| In reply to | #91502 |
Am 01.09.2023 um 14:30 schrieb Muttley@dastardlyhq.com: > So what? Network delays are still 99.9% of any delay in the process. You make up your own mind instead of reading Wikipedia.
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| From | Muttley@dastardlyhq.com |
|---|---|
| Date | 2023-09-01 13:49 +0000 |
| Message-ID | <ucsq61$3psff$1@dont-email.me> |
| In reply to | #91503 |
On Fri, 1 Sep 2023 15:33:46 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: >Am 01.09.2023 um 14:30 schrieb Muttley@dastardlyhq.com: > >> So what? Network delays are still 99.9% of any delay in the process. > >You make up your own mind instead of reading Wikipedia. I think my first hand experience actually working on these systems trumps anything in wikipedia, but hey, what would I know compared to a genius like you.
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-09-01 15:59 +0200 |
| Message-ID | <ucsqoq$3puf0$1@dont-email.me> |
| In reply to | #91504 |
Am 01.09.2023 um 15:49 schrieb Muttley@dastardlyhq.com: > On Fri, 1 Sep 2023 15:33:46 +0200 > Bonita Montero <Bonita.Montero@gmail.com> wrote: >> Am 01.09.2023 um 14:30 schrieb Muttley@dastardlyhq.com: >> >>> So what? Network delays are still 99.9% of any delay in the process. >> >> You make up your own mind instead of reading Wikipedia. > > I think my first hand experience actually working on these systems trumps > anything in wikipedia, but hey, what would I know compared to a genius like you. > I guess youre not professionally programming at all according to the n00b-questions you ask for sometimes.
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| From | Muttley@dastardlyhq.com |
|---|---|
| Date | 2023-09-01 14:03 +0000 |
| Message-ID | <ucsr09$3pvur$1@dont-email.me> |
| In reply to | #91505 |
On Fri, 1 Sep 2023 15:59:55 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: >Am 01.09.2023 um 15:49 schrieb Muttley@dastardlyhq.com: >> On Fri, 1 Sep 2023 15:33:46 +0200 >> Bonita Montero <Bonita.Montero@gmail.com> wrote: >>> Am 01.09.2023 um 14:30 schrieb Muttley@dastardlyhq.com: >>> >>>> So what? Network delays are still 99.9% of any delay in the process. >>> >>> You make up your own mind instead of reading Wikipedia. >> >> I think my first hand experience actually working on these systems trumps >> anything in wikipedia, but hey, what would I know compared to a genius like >you. >> > >I guess youre not professionally programming at all >according to the n00b-questions you ask for sometimes. "n00b"? Wow, you're so L33t. The fact that you believe no ones experience except yours counts for anything says a whole lot about you and its not good.
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| From | Bonita Montero <Bonita.Montero@gmail.com> |
|---|---|
| Date | 2023-09-01 16:15 +0200 |
| Message-ID | <ucsrlc$3q2a4$1@dont-email.me> |
| In reply to | #91506 |
Am 01.09.2023 um 16:03 schrieb Muttley@dastardlyhq.com: > The fact that you believe no ones experience except yours counts > for anything says a whole lot about you and its not good. No, you constantly feel offended by statements from me that you always have to go one step further. That you should have done the same thing as me, especially in a field in which only a few work, is simply very unlikely. It's much more likely that you'll want to put yourself above me again.
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| From | Muttley@dastardlyhq.com |
|---|---|
| Date | 2023-09-01 14:39 +0000 |
| Message-ID | <ucst3q$3qacb$1@dont-email.me> |
| In reply to | #91507 |
On Fri, 1 Sep 2023 16:15:09 +0200 Bonita Montero <Bonita.Montero@gmail.com> wrote: >Am 01.09.2023 um 16:03 schrieb Muttley@dastardlyhq.com: > >> The fact that you believe no ones experience except yours counts >> for anything says a whole lot about you and its not good. > >No, you constantly feel offended by statements from me that you >always have to go one step further. That you should have done the I simply comment on your code and yes, sarcastically if I think it merits it. If you don't want people commenting on your code then don't bloody post it! Unless you only want the fawning adulation you clearly think you deserve but you can forget about that pal.
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