IRC logs of #boinc for Friday, 2012-09-07

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17:40 <wdsmia> &wx 50319

17:40 <Romulus> wdsmia: Temperature: 69.6F / 20.9C | Humidity: 68% | Pressure: 29.96in / 1014hPa (Falling) | Conditions: Overcast | Wind Direction: North | Wind Speed: 9.0mph / 14.5km/h ; Friday - Overcast with thunderstorms and rain showers, then rain showers in the afternoon. High of 72F. Breezy. Winds from the WSW at 10 to 20 mph shifting to the NNW in the afternoon. Chance of rain 70%.; Friday Night - Partly (1 more message)

17:40 <wdsmia> &more

17:40 <Romulus> wdsmia: cloudy in the evening, then clear. Low of 48F. Winds from the NNW at 5 to 20 mph.; Saturday - Clear. High of 75F. Winds from the NW at 10 to 15 mph.;

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21:17 <GTRsdk> Is it possible to have a BOINC server setup so I could have clients do things such as compile programs?

21:19 <efc> Probably, but sounds like a configuration nightmare

21:27 <PovAddict> that's a pain in the ass to do

21:27 <PovAddict> problem #1: configuration, as efc said

21:28 <PovAddict> toolchains are hard to put into a standalone directory, they like to grab things from systemwide directories

21:30 <efc> sometimes I wish my compiles at work could be distributed, but it probably isn't worth enough to do when you could get an 8-core pretty easily

21:30 <efc> (if I had any influence over what kind of machine I had, which I never have)

21:30 <PovAddict> and if you're OK with using systemwide libraries, you have to keep them decently compatible across your clients

21:31 <PovAddict> problem #2: multiple processes

21:32 <PovAddict> compiling a single .o involves the compiler driver starting the real compiler and then running the assembler; compiling a whole program means that x100 plus the linker and the coordinating process such as 'make'

21:34 <PovAddict> you'd have to keep track of all the spawned subprocesses to make sure nothing stays running after the task finishes, to kill them all if the task is aborted, and to add up the CPU time used

21:34 <PovAddict> problem #3: latency

21:35 <PovAddict> I don't know what your goal is, but usually compiling code is something where you want low latency

21:35 <PovAddict> BOINC is designed for high throughput, not low latency

21:35 <efc> our compiler vendor had looked at the problem, said they had some plans but nothing anytime soon

21:36 <PovAddict> efc: distcc, icecream...

21:38 <GTRsdk> basically all systems would be identical in hardware and software

21:39 <efc> If you have direct control over them, there might be some easier ways to do it than BOINC

21:56 <PovAddict> on a LAN, definitely go for something like distcc

21:56 <PovAddict> for low-latency regular builds

21:59 <GTRsdk> distcc definitely looks like what I was after

22:22 <PovAddict> GTRsdk: search for 'icecream', I heard it's better than distcc

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22:22 <PovAddict> perhaps better found as 'icecc'

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