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Re: The speed of the compiler, was: Re: Combine four insns

From: Chiheng Xu <chiheng dot xu at gmail dot com>
To: "Joseph S. Myers" <joseph at codesourcery dot com>
Cc: Diego Novillo <dnovillo at google dot com>, Toon Moene <toon at moene dot org>, Steven Bosscher <stevenb dot gcc at gmail dot com>, Bernd Schmidt <bernds at codesourcery dot com>, Eric Botcazou <ebotcazou at adacore dot com>, Richard Guenther <richard dot guenther at gmail dot com>, gcc-patches at gcc dot gnu dot org
Date: Tue, 10 Aug 2010 14:20:30 +0800
Subject: Re: The speed of the compiler, was: Re: Combine four insns
References: <4C5C20D0.5020105@codesourcery.com> <4C5C8F7C.6010509@codesourcery.com> <AANLkTi=tnhXOPPaG8JM_TNFScoPPefY0aWi_Zjth5Y46@mail.gmail.com> <201008071010.53419.ebotcazou@adacore.com> <4C5FEF18.7010504@codesourcery.com> <4C6011F7.5040904@moene.org> <AANLkTikmGYsk4DbTugpiKvJM+CNr3=2nzCj7RUG7dO7y@mail.gmail.com> <4C601691.1000303@moene.org> <4C601E08.4020303@google.com> <Pine.LNX.4.64.1008091715380.17100@digraph.polyomino.org.uk> <AANLkTi=mUEnB3Uh7EnA-Km5qVOYR4VAqpThJvqjLRJFb@mail.gmail.com>

On Tue, Aug 10, 2010 at 1:57 PM, Chiheng Xu <chiheng.xu@gmail.com> wrote:
>
> Using shared memory is by far the most efficient way to transmit large
> amount data between processes. ÂIt's I/O and communication cost is
> roughly zero if you have enough physical memory.

I mean, using memory-maped temp file to transmit data. This is
essentially the same as shared memory, except that it does not consume
swap space.

-- 
Chiheng Xu
Wuhan,China

References:
- Combine four insns
  - From: Bernd Schmidt
- Re: Combine four insns
  - From: Bernd Schmidt
- Re: Combine four insns
  - From: Richard Guenther
- Re: Combine four insns
  - From: Eric Botcazou
- Re: Combine four insns
  - From: Bernd Schmidt
- Re: Combine four insns
  - From: Toon Moene
- Re: Combine four insns
  - From: Steven Bosscher
- The speed of the compiler, was: Re: Combine four insns
  - From: Toon Moene
- Re: The speed of the compiler, was: Re: Combine four insns
  - From: Diego Novillo
- Re: The speed of the compiler, was: Re: Combine four insns
  - From: Joseph S. Myers
- Re: The speed of the compiler, was: Re: Combine four insns
  - From: Chiheng Xu

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