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Date: Fri, 11 May 2007 08:26:36 +0800 (CST)
From: Chee Kiang Goh <gck_ngll_291295 AT yahoo DOT com DOT sg>
Subject: Re: DualCores and Current Cygwin problems
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Good day, all,

Still no luck trying out Larry's Suggestion... my
system is a bit edgy and unstable at the moment... is
gonna be a long re-installation ... :< fortunately I
am trying this @ home and only have to live with my
wife's complaints. 

After reading more of the current and past postings, I
gather that there are lots of reports with similar
symptoms... some regarding the vista installation,
some like mine and Joseph, on the dual cores,  and
lots of others with build-failures. The interesting
part is that the underlying system/OS are typically
quite varied. 

I am not sure if these are somehow connected.
Appreciate if you can share your opinions.  

Will update as soon as my PC bounced back to normal to
continue my trials...:P

Thanks again all round!

Best Regards
Chee Kiang
From my wife's notebook...



--- Joseph Kowalski <jek3 AT sun DOT com> wrote:

> 
> I think the following sad story should shed a little
> light on this issue.
> 
> I'm attempting to use cygwin to provide the
> UNIX-like build environment 
> to build Java SE on a DualCore system.
> 
> Relevant configuration details:
>     AMD X2 5200+
>     Asus M2NPV-VM
>     2 Gb ECC memory (std. clocks)
> 
> I'm working to improve the documentation for the
> Java SE build, so I 
> know *exactly* what's on the system.  The
> installations are:
> 
>     1) Windows XP, fully updated
>     2) Visual Studio .NET Professional (2003)
>     3) Microsoft Platform SDK (2004 - *not* R2)
>     4) Microsoft DirectX SDK (Summer 2004)
>     5) Sun Java 6 SDK (1.6.0_01)
>     6) Cygwin (current)
> 
> That's it.  No additional software components. 
> None.
> 
> With this configuration, I get random "can not fork:
> Resource 
> temporarily unavailable" errors when trying to
> perform the fairly large 
> and complex product build.  I also get
> "dup_proc_pipe" failures, which 
> are fairly random, but tend to be understandably
> associated with long 
> pipes in the build process.
> 
> If I add /ONECPU to boot.ini, neatly turning my
> DualCore system into a 
> single core system, the failures all magically
> disappear.
> 
> This would tend to indicate that there is a
> multi-threading issue either 
> in cygwin or in the underlying Windows XP operating
> environment.
> 
> It hopefully also provides a work-around (abet a
> somewhat painful one).  
> It's probably worth trying by all who have been
> reporting this failure.  
> If it doesn't eliminate the failure for you, its an
> indication that 
> there may be multiple failures involved.
> 
> - cheers and good luck (these are hard problems to
> track down),
> 
> - Joseph Kowalski
> 
> 
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