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Re: Make with "-j8" sometime fail on a single-core machine

From: Mike Shal
Subject: Re: Make with "-j8" sometime fail on a single-core machine
Date: Sat, 21 Nov 2009 13:49:00 -0500

On 11/19/09, He Yunlong-B20256 <address@hidden> wrote:
> Hi, Mike,
>         Thanks very much for your patient clarification, is "one task"
>  only done by "one job"?

I'm not sure what you mean by "task" here. Make has a concept of a
"job", as you can see by searching around the help documentation. I
think each job will be executing one command script for a particular
rule at any given time, and the command script itself is executed
serially. The parallelization comes in when you have multiple jobs, so
multiple command scripts can be executed simultaneously.

>         We are working with many opensource packages, it's really a
>  challenge to verify and update all makefiles, it seems such issues are
>  very general.

I agree that it is a challenge, and a very general problem.


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