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Groups > comp.lang.forth > #132032
| From | anton@mips.complang.tuwien.ac.at (Anton Ertl) |
|---|---|
| Newsgroups | comp.lang.forth |
| Subject | Re: Parallel Forth on a 44 core machine |
| Date | 2024-08-18 15:14 +0000 |
| Organization | Institut fuer Computersprachen, Technische Universitaet Wien |
| Message-ID | <2024Aug18.171452@mips.complang.tuwien.ac.at> (permalink) |
| References | (2 earlier) <2df471d1ec39c22949169f8a612b780d@www.novabbs.com> <nnd$0f8813aa$41d0ee61@18dd570284c2b77b> <932f13f537e8c918ecd2089466e4c405@www.novabbs.com> <2024Aug18.154233@mips.complang.tuwien.ac.at> <f149ab8c61a2bc72b3471b90985a3930@www.novabbs.com> |
mhx@iae.nl (mhx) writes:
>Do you know if shared memory as provided by the OS (or Windows)
>has these problems too?
Shared memory has false sharing problems, however that sharing is
arranged. The slowdown comes from the hardware. See
<https://en.wikipedia.org/wiki/False_sharing>.
The I-cache/D-cache ping-pong when you have writable data close to
executed code on AMD64 is also false sharing, this time within one
core.
- anton
--
M. Anton Ertl http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
New standard: https://forth-standard.org/
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Parallel Forth on a 44 core machine mhx@iae.nl (mhx) - 2024-08-17 15:34 +0000
Re: Parallel Forth on a 44 core machine minforth@gmx.net (minforth) - 2024-08-18 09:28 +0000
Re: Parallel Forth on a 44 core machine mhx@iae.nl (mhx) - 2024-08-18 11:31 +0000
Re: Parallel Forth on a 44 core machine albert@spenarnc.xs4all.nl - 2024-08-18 14:47 +0200
Re: Parallel Forth on a 44 core machine mhx@iae.nl (mhx) - 2024-08-18 13:33 +0000
Re: Parallel Forth on a 44 core machine anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2024-08-18 13:42 +0000
Re: Parallel Forth on a 44 core machine mhx@iae.nl (mhx) - 2024-08-18 14:32 +0000
Re: Parallel Forth on a 44 core machine anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2024-08-18 15:14 +0000
Re: Parallel Forth on a 44 core machine minforth@gmx.net (minforth) - 2024-08-18 14:01 +0000
Re: Parallel Forth on a 44 core machine mhx@iae.nl (mhx) - 2024-08-28 09:29 +0000
Re: Parallel Forth on a 44 core machine Paul Rubin <no.email@nospam.invalid> - 2024-08-28 09:35 -0700
Re: Parallel Forth on a 44 core machine mhx@iae.nl (mhx) - 2024-08-18 18:37 +0000
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