Date: Thu, 2 Oct 1997 12:40:23 -0700 From: Greg Shaffer <gshaffer@nosc.mil> To: Mark Murray <mark@grondar.za> Cc: current@FreeBSD.Org, gshaffer@cod.nosc.mil Subject: Re: Making world on an SMP system. Message-ID: <v03102801b059a8433d5e@[128.49.16.48]> In-Reply-To: <199710021851.UAA18569@greenpeace.grondar.za>
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>Hi > >I am a recent convert to the world of SMP. Much of what I do on this >board (a Giga-Byte GA586DX w 2xP5/200) is a _helluva_ lot easier, >now that the load average is a bit more reasonable. (I do real number- >crunching here :-) ). > >One thing that I have found to be frought with danger is large makes >and "make -j N" (N an int). > >EG: make -j2 world usually falls over in a couple of minutes. It seems >1) either the dependancies are not SMP-friendly, or >2) make is broken. > >I suspect 1). Is this a known "thing"? Is anyone working on it? ISTR >that PHK was into massively parallel makes a few years ago (?). > >Are you (PHK) still doing stuff there? > >M >-- >Mark Murray >Join the anti-SPAM movement: http://www.cauce.org Several months ago there was some discussion on this. Someone actually went through the *.mk and make files to make them parallel safe (i.e. make -jN). The patches really improved the make world time. As far as I know these patches were never committed! Greg Shaffer
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