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Re: faster "CRC"- / "FNV"-hashing

From Bonita Montero <Bonita.Montero@gmail.com>
Newsgroups comp.lang.c++
Subject Re: faster "CRC"- / "FNV"-hashing
Date 2021-10-11 08:34 +0200
Organization A noiseless patient Spider
Message-ID <sk0luh$fvr$2@dont-email.me> (permalink)
References <sjv5nb$7sp$1@dont-email.me> <3TP8J.82248$tG6.21234@fx39.iad> <sk0kqq$s7n$1@dont-email.me> <PQQ8J.66923$6U3.41978@fx43.iad>

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Am 11.10.2021 um 08:29 schrieb Branimir Maksimovic:
> On 2021-10-11, Bonita Montero <Bonita.Montero@gmail.com> wrote:
>> Am 11.10.2021 um 07:23 schrieb Branimir Maksimovic:
>>> On 2021-10-10, Bonita Montero <Bonita.Montero@gmail.com> wrote:
>>>> I derived two hash-algorithms from FNV32/64 and CRC64 that don't yield
>>>> the same results, and don't provide the opportunity for error-correction
>>>> for CRC, but which have the same equal distribution and are much more
>>>> performant on modern OoO-CPUS. How did I do that ?
>>>>
>>>> These are the results on my Linux Ryzen 7 1800X:
>>>>
>>>> fnv streamed 32: : 0.964425 GB/s
>>>> fnv blocked 32:  : 1.96624 GB/s 104%
>>>> fnv streamed 64: : 0.939418 GB/s
>>>> fnv blocked 64:  : 3.11791 GB/s 232%
>>>> crc64:           : 0.478093 GB/s
>>>> crc64 blocked:   : 2.39144 GB/s 400%
>>>>
>>> Proprietary?
>>
>> Of course - but the same equal distribution.
>>
> Dunno, those hashing algos work much better if there is
> support from hardware. But, of course faster, better :P

There are only special SSE-instrucions for CRC32, but not for CRC64.

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Thread

faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-10 18:51 +0200
  Re: faster "CRC"- / "FNV"-hashing "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-10-10 12:36 -0700
    Re: faster "CRC"- / "FNV"-hashing scott@slp53.sl.home (Scott Lurndal) - 2021-10-10 22:51 +0000
      Re: faster "CRC"- / "FNV"-hashing "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-10-12 13:47 -0700
    Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 08:09 +0200
  Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 05:23 +0000
    Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 08:15 +0200
      Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 06:29 +0000
        Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 08:34 +0200
    Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 08:27 +0200
      Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 06:32 +0000
        Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 08:33 +0200
          Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 07:46 +0000
            Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 10:53 +0200
              Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 09:11 +0000
                Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 11:18 +0200
                Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 10:42 +0000
                Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 13:03 +0200
                Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 11:12 +0000
                Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 13:44 +0200
                Re: faster "CRC"- / "FNV"-hashing Bo Persson <bo@bo-persson.se> - 2021-10-11 13:58 +0200
                Re: faster "CRC"- / "FNV"-hashing David Brown <david.brown@hesbynett.no> - 2021-10-11 14:23 +0200
                Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 12:56 +0000
                Re: faster "CRC"- / "FNV"-hashing Bonita Montero <Bonita.Montero@gmail.com> - 2021-10-11 15:55 +0200
                Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 16:55 +0000
                Re: faster "CRC"- / "FNV"-hashing RadicalRabbit@theburrow.co.uk - 2021-10-12 09:06 +0000
                Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-12 11:01 +0000
                Re: faster "CRC"- / "FNV"-hashing RadicalRabbit@theburrow.co.uk - 2021-10-12 14:49 +0000
                Re: faster "CRC"- / "FNV"-hashing David Brown <david.brown@hesbynett.no> - 2021-10-11 17:19 +0200
                Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 16:57 +0000
  Re: faster "CRC"- / "FNV"-hashing Branimir Maksimovic <branimir.maksimovic@icloud.com> - 2021-10-11 05:41 +0000

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