SETI MB CUDA for Linux

[riofl]

ahh ok... ill stick with what i have then.

wish they would make a standard compute appliance like they have for java... azul systems makes a compute appliance that can be addressed by your computer and gives java 864 processor cores and 768gb ram to work with! their java only processors  (vega3 chips) now have 54 cores each!

[riofl]

is there a  way to tell boinc not to use a specific device for cuda? say you have 4 cuda capable processors, but you want device 0 to be left alone and use only as your video card but to use devices 1,2,3 for cuda only. is there a way to do this?

[riofl]

does boinc see a gtx295 as one physical device or 2? i guess i am asking if it counts processors as devices or the entire unit based on a slot.

[b0b3r]

It counts GPU so will see 2.

[sunu]

Yes, seti sees the cores of a 295 separately. In order to not use a core or more for crunching you can use

<ignore_cuda_dev>N</ignore_cuda_dev>

in your cc_config.xml. It needs boinc 6.10.19 or later.

[riofl]

thanks guys! that makes life considerably easier

[riofl]

whoah gona have to read up on this 6.10.30 version... i set it for my normal 10 days to allow it to fill the cache before i set it back to 5 days and before i realized it it filled me with more than 3000 workunits.. 2200 of them on gpu! thankfully 1500 of them are vhars so they will go very quickly.. to help i took them off the cpu and put them on the gpus to get them outta here quickly and get the count down to something a bit more sensible. unless it is smart enough now to realize the vhars take so litlle time it loaded me up with things... at the rate they are going i dont see a log jam really, it should be ok but just the initial number alarmed me.

[sunu]

it it filled me with more than 3000 workunits..

My cache hovers around 6500 workunits 

[riofl]

cant get a handle on the methods of scoring...

a few days ago i made a few hardware changes concerning the cpu cooler and case air flow and then upped the processor to 3.51ghz which it appears quite happy at. 3 hrs of prime95 small fft and option 3 torture test (blend) passed every test and the prime95 benchmarks show a definite improvement over 3.3ghz. i upped the cpu VCore to 1.35v by the bios but sensors report it closer to 1.34. appears quite stable. time will tell.

anyway, my times per workunit completion are noticably shorter, yet my scores for this machine have dropped from 18.6k to 17.5k and my pending credit jumped from 89k to 105k! is this an indication boinc isnt happy with the changes to this system?

[riofl]

i also noticed i have some pending credits still sitting there from last november!

[sunu]

anyway, my times per workunit completion are noticably shorter, yet my scores for this machine have dropped from 18.6k to 17.5k and my pending credit jumped from 89k to 105k! is this an indication boinc isnt happy with the changes to this system?

No, it means that your pending credit increased  

Just monitor your invalid tasks page in your account for the next few days. If it stays blank then all is ok.

[riofl]

so far so good. it has been running since saturday night and so far there is one invalid from the 14th. a cuda out of memory error... i suspect since it was dated yesterday morning it was when i ran glxgears while everything was running with more open than i usually have just to see how much of a load was present by the drop in fps. will keep an eye out..

hehe a challenge to get used to this varying fan noise. its quite loud.. the cpu fan is a delta 150cfm 4000rpm fan   .... i suspect if i cover up the 25cm fan hole in the case since the fan seems to be useless with this current airflow design i did it will muffle the fan quite a bit.

[sunu]

I've never had a Delta but with 2 ultra kazes 3000 and 1 2000 plus a multitude of other fans, my case is very noisy.

[riofl]

i love delta (1st pc corp). they cut no corners including noise to give you air flow and consistant high air pressure... i would rank them as the best around. their only fault is all of them are noisy. which i personally could care less. if a person wants a supercomputer at their desk they need to be prepared for a mini jet engine sitting next to them. they make a 5500rpm 253cfm fan that outputs so much air pressure you literally have to squint to keep your eyes from drying out if you aim the fan at you from arms length away! i have one but have not installed it yet. not positive i need it but i got it in case summer temps cause my comp to run a bit hot. i will probably install it and just keep it turned down so i have the 'headroom' if i need it.

to give you an idea, here are the specs for that monster

    

Delta PFB1212UHE-F00
120 x 120 x 38mm
Airflow: 252.85 CFM, 7.16 m3/min
Fan Speed: 5500 RPM
Noise: 66.5 dBa
Rated Voltage: 12 VDC
Operating Voltage: 8 to 13.2V DC
Rated Current: 4.80 amp
Rated Input Power: 48W
Air Pressure: 35.877 mmH20, 1.41" H2O
3 bare wire or 4-pin + 3-pin optional

in case you want to see what they offer:

http://1stpccorp.com/fan_all.html

[riofl]

i have 2 invalids from the 14th, both completed within minutes of each other, both with the same cuda out of memory error so i suspect that also was a victim of my glxgears experiment. nothing else so far.