Do you use the sticky stuff that comes with it when attaching it to your Pi's CPU? I removed it and put on some of my own thermal paste. Looks like it got the temp down another 2-3°C.
Do you use the sticky stuff that comes with it when attaching it to your Pi's CPU? I removed it and put on some of my own thermal paste. Looks like it got the temp down another 2-3°C.
Interesting. But when using thermal paste that is not sticky, how do you keep the heat sink in place, as there are no mounting holes?
As for measuring power consumption, I'm currently trying a "charger doctor" type USB multimeter:
The advantage is that it measures the output of the PSU, so we can compare values unaffected by PSU efficiency.
It seems to give credible values except when using it with a Raspberry Pi Hub for power, maybe because that one is designed to supply more than the 5V standard voltage: https://www.adafruit.com/products/1516 ???? I get rediculously low readings of 90mA with this hub.
So for a Raspi2 that is overclocked to 1GHz running 4 BRP_Beta in parallel (and using a PSU other than the Raspi Hub), it gives a reading of 0.6 A at 5V so 3 W . That is with HDMI cable unplugged, but with wireless keyboard and mouse adapter. Tasks take 50k seconds = 13.9 h to finish, so...
4 units in parallel, each yielding 62.5 credits, so 432 credits per day , or
I could convince the stock 1.47 (NEON_Beta) app to work on one of my Odroid C2 through an app_info.xml.
So far 8 units completed, 2 validated.
Duration 29600-32000 second https://einsteinathome.org/host/12224011/tasks
I understood the 1.42 app differs in that it doesn't bring wisdom preloaded, right?
I tried creating own C2 wisdom through "fftwf-wisdom -v -t 10 -n -o wisdomf rif12582912" as seen here previously, but it completes in few seconds, creating a wisdom file of just 20 lines.
Is it worth running it anyway?
I have recently had 3 Pi3s running 4 WUs each suddenly show 3 Wus crunching with the 4th "waiting on memory". I therefore reduced them to 3 concurrent jobs w/o issues. Any ideas on the "waiting on memory" condition?
This had occurred before but now it is back. I had not made any changes.
If you have Boinc Manager access to that host, check the computing preferences -> disk and memory -> Memory: When computer is in use, use at most: 70%.
70% should be the default. The Pi3 has 925MB usable memory, 70% of that is 647.5MB.
My Einstein WUs show 134.65MB used while in progress, totaling 538.6MB for Einstein and surely some for BOINC itself. Et voila, you are close to the 70%, some work has to wait. You could increase that parameter to 80%, that should give you some head room...
I do not run a GUI on my Pies. I ssh in for most things but use Boinctasks on a Windows machine to monitor all my Boinc crunchers. You can use it to control Boinc on other machines as well as change settings. Very usefull when you get more than 2 or 3 crunchers or they are in other rooms.
Still looking for a way to cool the RPi3 passively.
Using parts of a PII 350MHz heat sink (I could cut of 3 more) seems promising.
Temperatures are of course better than with the tiny Pi cooler that I had ordered with the Rpi3 (62°C with Noctua NF-P12 @5v pointed at it).
Load with 4 x Einstein:
60°C passive
48°C with fan
Idle:
40°C passive
34°C with fan
I used Arctic Cooling thermal pads, unfortunately these aren't that sticky, the heat sink easily falls of.
Seems I need to order different thermal tape...
Do you use the sticky stuff
)
Do you use the sticky stuff that comes with it when attaching it to your Pi's CPU? I removed it and put on some of my own thermal paste. Looks like it got the temp down another 2-3°C.
RE: Do you use the sticky
)
Interesting. But when using thermal paste that is not sticky, how do you keep the heat sink in place, as there are no mounting holes?
As for measuring power consumption, I'm currently trying a "charger doctor" type USB multimeter:
http://www.amazon.de/dp/B0174YYIQG
The advantage is that it measures the output of the PSU, so we can compare values unaffected by PSU efficiency.
It seems to give credible values except when using it with a Raspberry Pi Hub for power, maybe because that one is designed to supply more than the 5V standard voltage: https://www.adafruit.com/products/1516 ???? I get rediculously low readings of 90mA with this hub.
So for a Raspi2 that is overclocked to 1GHz running 4 BRP_Beta in parallel (and using a PSU other than the Raspi Hub), it gives a reading of 0.6 A at 5V so 3 W . That is with HDMI cable unplugged, but with wireless keyboard and mouse adapter. Tasks take 50k seconds = 13.9 h to finish, so...
4 units in parallel, each yielding 62.5 credits, so 432 credits per day , or
144 RAC/W
or
6 credits/Wh or
6000 credits/kWh
or (at 0.3 EUR /kWh)
20000 credits / EUR
I could convince the stock
)
I could convince the stock 1.47 (NEON_Beta) app to work on one of my Odroid C2 through an app_info.xml.
So far 8 units completed, 2 validated.
Duration 29600-32000 second
https://einsteinathome.org/host/12224011/tasks
I understood the 1.42 app differs in that it doesn't bring wisdom preloaded, right?
I tried creating own C2 wisdom through "fftwf-wisdom -v -t 10 -n -o wisdomf rif12582912" as seen here previously, but it completes in few seconds, creating a wisdom file of just 20 lines.
Is it worth running it anyway?
I have recently had 3 Pi3s
)
I have recently had 3 Pi3s running 4 WUs each suddenly show 3 Wus crunching with the 4th "waiting on memory". I therefore reduced them to 3 concurrent jobs w/o issues. Any ideas on the "waiting on memory" condition?
This had occurred before but now it is back. I had not made any changes.
@adam I use a thermal pad.
)
@adam I use a thermal pad. Sticky both sides. I doubt it is the most efficient but works when you cannot attach the heatsink.
@ Robl I had to up the allowable memory used in Manager. IIRC it was set to 50% and I upped it to 90%
If you have Boinc Manager
)
If you have Boinc Manager access to that host, check the computing preferences -> disk and memory -> Memory: When computer is in use, use at most: 70%.
70% should be the default. The Pi3 has 925MB usable memory, 70% of that is 647.5MB.
My Einstein WUs show 134.65MB used while in progress, totaling 538.6MB for Einstein and surely some for BOINC itself. Et voila, you are close to the 70%, some work has to wait. You could increase that parameter to 80%, that should give you some head room...
Thank you both. I just
)
Thank you both. I just changed it and I'll see how it goes. I was at 50%.
I do not run a GUI on my
)
I do not run a GUI on my Pies. I ssh in for most things but use Boinctasks on a Windows machine to monitor all my Boinc crunchers. You can use it to control Boinc on other machines as well as change settings. Very usefull when you get more than 2 or 3 crunchers or they are in other rooms.
http://efmer.com/b/?q=boinctasks_download
RE: Thank you both. I just
)
Also, if you are not running X, make sure GPU is set to lowest mem value in raspi-config, 16MB.
My YouTube Channel: https://www.youtube.com/user/KF7IJZ
Follow me on Twitter: https://twitter.com/KF7IJZ
Still looking for a way to
)
Still looking for a way to cool the RPi3 passively.
Using parts of a PII 350MHz heat sink (I could cut of 3 more) seems promising.
Temperatures are of course better than with the tiny Pi cooler that I had ordered with the Rpi3 (62°C with Noctua NF-P12 @5v pointed at it).
Load with 4 x Einstein:
60°C passive
48°C with fan
Idle:
40°C passive
34°C with fan
I used Arctic Cooling thermal pads, unfortunately these aren't that sticky, the heat sink easily falls of.
Seems I need to order different thermal tape...