BRP4U (Raspberry Pi , single DM tasks) feedback thread

Bikeman (Heinz-Bernd Eggenstein)
Bikeman (Heinz-...
Joined: 28 Aug 06
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Thanks for the bug

Message 79559 in response to (parent removed)

Thanks for the bug report

Quote:


My small question: what is needed to download NEON version? Boinc client from NativeBOINC uses 'arm-android' and 'arm-android-linux-gnu' platforms.
Thanks your for any help.

Version 1.02 works very well on my smartphone with Nativeboinc :)

It was configured to only be shipped to version 7.1.0 and above of BOINC client (for tests of an Android client that is part of the official BOINC repo now.

For now I set this back to 7.0.36 ,so ARMv7 NEON BRP4U should be usable with NativeBOINC now, but again, this might change w/o notice :-).

Also expect a new ARMv6 version in the near future.

Cheers
HB

Alex
Alex
Joined: 1 Mar 05
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Happy to see what's going on

Happy to see what's going on here!
I've set pogs to no new tasks and hope to get one of the arm7 wu's next time a wu is requested.
For now my Nexus (running in Dock, set to use 2 CPU's) crunches a 'single DM'. Now it has reached 32% after 24 hours.

Bikeman (Heinz-Bernd Eggenstein)
Bikeman (Heinz-...
Joined: 28 Aug 06
Posts: 164
Credit: 1864017
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RE: Happy to see what's

Message 79561 in response to message 79560

Quote:
Happy to see what's going on here!
I've set pogs to no new tasks and hope to get one of the arm7 wu's next time a wu is requested.
For now my Nexus (running in Dock, set to use 2 CPU's) crunches a 'single DM'. Now it has reached 32% after 24 hours.

Sounds about right. The NEON version should be almost 4 times faster than this one. Even the ARMv6 version (after the latest update) should be almost twice as fast as the old ARMv6 version you are using now....hopefully.

Cheers
HB

Alex
Alex
Joined: 1 Mar 05
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I've got one 1.03 this night.

I've got one 1.03 this night. After ~4hrs of crunching 30% are done. Great app! In about 3 hrs it will overtake the 1.02 app, which is currently @50% after 37 hrs.

Bikeman (Heinz-Bernd Eggenstein)
Bikeman (Heinz-...
Joined: 28 Aug 06
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Credit: 1864017
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Which brings up the question

Message 79563 in response to message 79562

Which brings up the question whether it is worthwhile to support non-NEON Android devices at all.

I'd like to hear feedback on this question. Are there enough old or low-end Android devices with ARMv6 CPUs around ??? Would volunteers care to run tasks on them that take (say) between 2 and 3 CPU days to complete (so, say, 6 to 9 days of elapsed time if you crunch 8 hours per day (or most likely night :-) )???

If there is sufficient demand we will provide this support, if not, dropping ARMv6-android will reduce pending tasks for the others (less waiting for very slow devices). Thoughts?

Cheers
HB

P.S.: FWIW, the RaspberryPi also doesn't support NEON, but OTOH it makes up for it by (usually) running under Raspbian, a Debian Linux port that uses the so called Hard-float ABI ==> better floating point performance for the same hardware when compared to Android's "soft(fp)" ABI. So the Raspi BRP4U performance seems to be somewhere in between the Android ARMv6 (VFP) and ARMv7 (NEON) app version performance. And it's easier to have a Raspi running 24/7 connected to mains than a phone that will most likely only crunch while connected to a charger.

Alex
Alex
Joined: 1 Mar 05
Posts: 88
Credit: 398734
RAC: 0

RE: Which brings up the

Message 79564 in response to message 79563

Quote:
Which brings up the question whether it is worthwhile to support non-NEON Android devices at all.

Speaking for myself only - no. Encouraged by the excellent performance of the 1.03 app (finished in 12h 50min) on my Nexus I installed the app also on my smartphone; got one 1.03 as well. Let's see how it acts with the setting run on charger only.

Quote:

I'd like to hear feedback on this question. Are there enough old or low-end Android devices with ARMv6 CPUs around ??? Would volunteers care to run tasks on them that take (say) between 2 and 3 CPU days to complete (so, say, 6 to 9 days of elapsed time if you crunch 8 hours per day (or most likely night :-) )???


I have no such devices.

Quote:

If there is sufficient demand we will provide this support, if not, dropping ARMv6-android will reduce pending tasks for the others (less waiting for very slow devices). Thoughts?

it might take longer to wait for the wingman, but it does not change the outcome (assuming the results will be the same ...)

Quote:


Cheers
HB

P.S.: FWIW, the RaspberryPi also doesn't support NEON, but OTOH it makes up for it by (usually) running under Raspbian, a Debian Linux port that uses the so called Hard-float ABI ==> better floating point performance for the same hardware when compared to Android's "soft(fp)" ABI. So the Raspi BRP4U performance seems to be somewhere in between the Android ARMv6 (VFP) and ARMv7 (NEON) app version performance. And it's easier to have a Raspi running 24/7 connected to mains than a phone that will most likely only crunch while connected to a charger.

I agree, so it looks like it will make sense to support it. There are many, many of them out there! But someone with contact to this scene needs to make some advertising for this project in serveral Raspberry foras.

Patrick
Patrick
Joined: 13 Mar 13
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Yesterday i ran the 1.02 app

Yesterday i ran the 1.02 app on my armv6 mobile phone (galaxy mini gts 5570)and i have determined that it took 20h for crunching 10% of the work.
After that i read here on the forum that the NEON app 1.03 is available here for that type of processor and i (sorry)aborted the task.
But what i can see now in crunching time is that with the 1.03 app it takes a little less then 1h to crunch 1% so i have done with that phone in 20h 20 ore more then 20 percentage of the task so it´s how you said Bikeman.
The armv6 runs with doubled speed with this NEON app instead of app 1.02
For those who run not 24/7 that´s a good thing to be not behind the deadline.
But no idea how much user will crunch on this type of processor because there are many newer on the market.
What i know for sure, there are sure people who don´t want to crunch on there newest Phone because its high price let me say of 300 or 500Euro for a good device or more.
That´s not small for a phone.
I think it´s the same if you put a high end pc together and crunch on that.
But i think you have to see that on the live servers how that develops.

That´s my personally estimation of this.

Patrick
Patrick
Joined: 13 Mar 13
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I forgot to say Another

I forgot to say
Another thing what you could do is to ask google how much android arm v6 devices they have actually contact with (percentage of all devices) on the Internet :)
But i don´t know if they give you an answer.
Or perhaps you find a good statistic over that on a reliable news website.

Patrick
Patrick
Joined: 13 Mar 13
Posts: 18
Credit: 5642
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What i could find on the

What i could find on the Internet is this comparison of android devices

http://en.wikipedia.org/wiki/Comparison_of_Android_devices

The release dates of them and the processor achitecture which you can find if you click on the System on chip entries could perhaps help to make a decision.

Alex
Alex
Joined: 1 Mar 05
Posts: 88
Credit: 398734
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I installed that app

I installed that app yesterday on my HTC Desire X as well, got one 1.03 task.
Runtime until now is 13:29:15, 77,18% done.
This is a 250€ phone.

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