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Re: SMP configuration
From: |
Eric Blake |
Subject: |
Re: SMP configuration |
Date: |
Mon, 17 May 2010 15:01:59 -0600 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-3.fc13 Lightning/1.0b1 Mnenhy/0.8.2 Thunderbird/3.0.4 |
On 05/17/2010 02:58 PM, Warren Young wrote:
> On 5/17/2010 10:40 AM, Eric Blake wrote:
>> On 05/17/2010 08:09 AM, Michael Menegakis wrote:
>>> On windows, probably because I had heard windows are very slow in
>>> creating new processes unlike UNIX, configuration is mindbogglingly
>>> slow.
>>>
>>> I wonder if there's a way to run it SMP ..-ish..
>>
>> How is SMP going to change the number of processes to be run?
>
> Most of the tests in a configure script don't actually have to run in
> series.
>
> Writing the code to analyze all the tests and build a dependency graph
> would be pretty tricky, though. Getting portable shells to launch N
> tests in parallel (where N is probably cores * 1.5 or so) at a time and
> integrate the results would be even trickier. You could do it easier
> in, say, Erlang, but then you've thrown portability out the window.
The quagmire project uses make to perform its parallel checks, but it
requires that end users have GNU make installed.
--
Eric Blake address@hidden +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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