Wow! A reference to DMUCS! I'm the author of that code, and yes, it hasn't been touched since 2006... :-( New job, new location, new priorities, etc...
It was made pre-pump-mode, so I doubt it works with it... But, it might... Perhaps I should really open-source that code so anyone could contribute to it. On Thu, May 15, 2014 at 7:37 AM, Dave Abrahams <d...@boostpro.com> wrote: > Wow, Jeff, that looks pretty awesome. It hasn't been touched since 2006, > though; does it work with pump mode? > > > On Wed, May 14, 2014 at 8:00 AM, Jeff Domogala > <jeff.domog...@oracle.com>wrote: > >> Another suggestion if you don’t want to dig into the code… I ran across >> DMUCS (http://dmucs.sourceforge.net) about 8 years ago when I was >> building up a farm of machines to be used by a couple hundred users. DMUCS >> will manage the compute resources and is able to handle unavailability of >> resources. I did make a few of my own tweaks to the source code for >> monitoring and other glitches I have run into along the way. I’m still >> using DMUCS as my frontend for distcc and am very happy. If there are any >> questions about my setup fire away. >> >> >> >> --Jeff >> >> >> >> *From:* Fergus Henderson [mailto:fer...@google.com] >> *Sent:* Wednesday, May 14, 2014 8:47 AM >> *To:* Dave Abrahams >> *Cc:* distcc@lists.samba.org >> *Subject:* Re: [distcc] DISTCC_POTENTIAL_HOSTS, localhost, and slots >> >> >> >> On Wed, May 14, 2014 at 6:16 AM, Dave Abrahams <d...@boostpro.com> wrote: >> >> DISTCC_POTENTIAL_HOSTS seems like a great idea; as I scale up the build >> farm I’d like to be able to deal with unavailability, but I’m having >> trouble getting it to work right. >> >> >> >> First, after much fooling around I surmise two undocumented facts(?) >> >> >> >> 1. it adds ,lzo,cpp to all the hosts implicitly >> >> >> >> Yes, that's done in ExportDISTCC_HOSTS function in the pump script >> (source file pump.in). >> >> >> >> 2. it only accepts bare host names, not the usual >> @?hostname/<slots>(,<extension>)* syntax >> >> Is that correct? >> >> >> >> Pretty much, yes. It just passes the variable's value to lsdistcc, and >> lsdistcc accepts either bare host names, or a printf format string >> containing %d, e.g. "mydistcc%d" or "distcc%d.my.own.org.com", not *host >> specifications* as described the distcc man page. >> >> >> >> If so, it would be good if these things were documented explicitly >> somewhere. >> >> >> >> Agreed. I would be happy to accept a patch to add such documentation. >> >> >> >> Another possibility would be to change lsdistcc to handle host >> specifications. >> >> >> >> Also, if I want localhost to be one of the hosts, it looks like I need to >> run distccd there. That doesn’t seem like the most efficient thing to do, >> since normal local compilation will presumably have fewer layers to work >> through. Am I mistaken? >> >> >> >> Well, you only need to run distccd for lsdistcc's initial query (lsdistcc >> doesn't have any special casing for localhost). >> >> But any actual compilations done will not go via the distccd on >> localhost; distcc itself does have special casing for localhost. >> >> >> >> I'd be happy to accept a patch to src/lsdistcc.c to make it special-case >> "localhost". >> >> >> >> Lastly, I’ve only been able to get it to run the default 6 (?) slots per >> host using DISTCC_POTENTIAL_HOSTS. My .distcc/hosts file looks like this, >> and has been working pretty well: >> >> >> >> --randomize >> >> localhost/10 >> >> bruford/10,lzo,cpp >> >> fripp/10,lzo,cpp >> >> >> >> Is there any way to get an effect like that using DISTCC_POTENTIAL_HOSTS, >> i.e. 10 slots per host, no local distccd? >> >> >> >> Not currently. I imagine that it would require only very minor changes >> to the ExportDISTCC_HOSTS function in the pump script (source file >> pump.in), though. >> >> >> >> Cheers, >> >> Fergus. >> >> >> >> -- >> >> Fergus Henderson <fer...@google.com> >> >> >> >> "Defend the user, exclude no one, and create magic." -- Eric Schmidt. >> >> >> > > > > -- > Dave Abrahams > > > __ > distcc mailing list http://distcc.samba.org/ > To unsubscribe or change options: > https://lists.samba.org/mailman/listinfo/distcc > -- Prof. Victor Norman Computer Science Dept., Calvin College v...@calvin.edu / 616 526-7805 “A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away.” -- Antoine de Saint Exupéry
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