IRC logs of #boinc for Tuesday, 2012-12-18

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12:13 <dddh> /opt/cuda/bin/../include/host_config.h:82:2: "error -- unsupported GNU version! gcc 4.7 and up are not supported!" ;(

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19:38 <desti_T2> http://www.globalenergyworld.com/news/6880/Coal_Use_Set_to_Surpass_Oil_in_a_Decade:_IEA.htm

19:38 <Romulus> <http://tinyurl.com/c6tw2b7> (at www.globalenergyworld.com)

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21:22 <wdsmia> &wx 50319

21:22 <Romulus> wdsmia: Temperature: 35.1F / 1.7C | Humidity: 84% | Pressure: 29.88in / 1012hPa (Rising) | Conditions: Overcast | Wind Direction: WNW | Wind Speed: 0.0mph / 0.0km/h ; Tuesday - Partly cloudy. High of 48F. Winds from the WSW at 10 to 15 mph.; Tuesday Night - Partly cloudy. Fog overnight. Low of 25F. Winds from the NW at 5 to 10 mph.; Wednesday - Mostly cloudy in the morning, then overcast with snow (1 more message)

21:22 <wdsmia> &more

21:22 <Romulus> wdsmia: and rain. High of 36F. Winds from the NE at 5 to 15 mph. Chance of snow 70%.; Winter Storm Warning for Polk County in effect until 6:00 PM CST on December 20, 2012;

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21:28 <efc> Moo

21:29 <Tank_Master> ooM

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22:23 <dddh> maybe there is some utilization factor for other projects?

22:24 <dddh> for example einstein has GPU utilization factor

22:40 <zombie67> einstein utilization factor changes with the number of concurrent tasks

22:42 <dddh> zombie67: is there something similar with milkyway or lhc for example?

22:44 <zombie67> For MW, the utilization on my 7970 is very close to 100%.  For LHC, I don't think they have a GPU app.

22:46 <dddh> how do you measure utilization?

22:47 <zombie67> for GPUs?  An app like Afterburner, or CCC, or whatever

22:47 <zombie67> for CPU, just look at Task Manager

22:47 <zombie67> but almost all project run CPUs at 100%

22:48 <dddh> I don't have Afterburner in linux

22:48 <dddh> but I guess running 5 tasks concurrently on GTX680 won't hurt

22:48 <dddh> if they fit into available memory

22:48 <zombie67> ah, linux.

22:49 <zombie67> okay, well then you probably already know how to measure CPU

22:49 <zombie67> for GPU, no idea

22:49 <zombie67> but for einstein, it requires up 256-512 per task

22:51 <dddh> I have 5 tasks on gtx580 and 5 on gtx680 running concurrently

22:51 <dddh> trying to benchmark 680 VGA

22:51 <zombie67> With a 580, I found running more than 2 per is a waste, regardless of memory.  So I would try 2 and 3 with a 680 and see what averages out the best points per day.

22:51 <zombie67> einstein GPU tasks are also very CPU heavy

22:52 <zombie67> And the default settings reserve too little CPU.  try reserving at least one CPU thread, in addition.

22:53 <dddh> running 6 CPU and 10 GPU tasks is "load average: 10"

22:53 <dddh> I have set it to use "67% of the processors"

22:54 <zombie67> the thing to keep in mind:  Einstein tasks require a quorum.  So you can't just look at your daily credits to evauate.  You have to look at individual tasks.

22:54 <dddh> I know

22:54 <dddh> and I have ~30% of CPUs idle

22:56 <dddh> because each GPU task is also using 20-30% of CPU

22:58 <zombie67> yeah, and you may need even more idle CPU time.

22:58 <zombie67> to maximize output

22:59 <zombie67> on your gpu

22:59 <zombie67> makes no sense

22:59 <zombie67> but it works

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23:47 <zombie67> gn

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