Re: SMP configuration

[Eric Blake]

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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