Date: Tue, 12 Jan 2021 09:01:15 -0800 From: Rob Ballantyne <robballantyne3@gmail.com> To: Dennis Clarke <dclarke@blastwave.org> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: Heat-death of the last of the 2-socket/2-cores-each PowerMac G5s that I have access to Message-ID: <CAKLrb5cq3-U%2Bo66bnDFfzYgbCj5eiMGOXfyt_WzSekfze_TS%2Bw@mail.gmail.com> In-Reply-To: <563ef275-97b0-3026-1073-ff715c9cecd7@blastwave.org> References: <27E8A3B1-7278-464E-A284-0B294337B3DA@yahoo.com> <B38F1AF4-B63F-440C-A07A-0B81D25112EA@yahoo.com> <563ef275-97b0-3026-1073-ff715c9cecd7@blastwave.org>
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I've got two of these units. My plan is to try and keep one running. However, I haven't started the running one for over a year. I don't know if everyone has seen: http://archive.is/v6ziF. It's an archive of the cooling system rebuild that someone once did. I attempted it on one of my units, unfortunately the first attempt was unsuccessful. Regards, Rob On Tue, Jan 12, 2021 at 8:43 AM Dennis Clarke via freebsd-ppc < freebsd-ppc@freebsd.org> wrote: > On 1/12/21 4:38 AM, Mark Millard via freebsd-ppc wrote: > > > > > > On 2021-Jan-11, at 17:42, Mark Millard <marklmi at yahoo.com> wrote: > > > >> The last of the 4-core PowerMac G5s that I have access to now shuts > >> down for "CPU B0 DIODE TEMP" that "exceeds critical temperature > >> (90.0 C)" when I try to rebuild/update ports or such. The other > >> 4-core G5 failed for such reasons in similar contexts a few months > >> ago.,Interestingly, the two G5s have very different liquid cooling > >> systems despite the similar time frame for the failures. > >> > >> Without the faster G5s, I may just use cross-built world/kernel > >> material and see if there is a tolerable but minimal set of ports > >> for supporting boot testing/dump inspection and basic operation of > >> the slower 2-socket/1-core-each and 1-socket/1-core-each PowerMacs > >> that I have access to, avoid things like building devel/llvm* > >> ports that take so long. (I have fairly strong time preferences.) > > > > I've done some more testing and, while use as a (full load/speed) > > builder machine is a no-go, it looks like this 4-core G5 can > > still be used for boot testing and basic operation without > > overheating. The prior failing machine overheated more easily > > but might have a similar status if I test it just for such use. > > > > How long the recently failed G5 will be useful for boot and basic > > operation testing, I do not know. But probably longer than for > > the originally-failing G5. > > > > > The shipping cost of a replacement unit would be more money than the > entire machine itself. I have four of these units where I keep one > of them running neatly. I think I have half a dozen more somewhere > in the back of a warehouse in Toronto. Back in 2010 ( or earlier ) > they were fantastic CPU powerhouse units running some math crunch > daemons that I wrote. Also, hard to believe but it was more cost > effective than running the big SPARC64 units that I had at the > same time. Ever tried to run Sun/Oracle M4000 or M5000 machines? > > In any case please drop me a line off-list and let's see if we can > figure out a way to get a workable unit into your hands. > > > -- > Dennis Clarke > RISC-V/SPARC/PPC/ARM/CISC > UNIX and Linux spoken > GreyBeard and suspenders optional > _______________________________________________ > freebsd-ppc@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-ppc > To unsubscribe, send any mail to "freebsd-ppc-unsubscribe@freebsd.org" >
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