Posts by HAL9000

21) Message boards : Number crunching : Anything relating to AstroPulse tasks (Message 1911012)
Posted 5 Jan 2018 by Profile HAL9000
Post:
Since the statement has been made there is no more Arecibo work in hopper, or available, I would say the future of this thread is also in grave doubt.........

Plenty of AP resends still to come, then people can discuss how long it was since they last had an AP WU, and how much Credit they gave compared to MB..
I reckon it's got years of life, even if there is no more AP data to be split.

We can also complain about why nobody is making an app for AP for work from GBT or Parkes.
That should keep the thread alive for years too :-)

I'm reasonably sure that it was mentioned they wanted to do AP for GBT data as well.
The first step requires the guys in the lab have the time to write the new splitter code, or have the budget for interns to tackle it.
Until that is done working on an app to processes non existent workunits wouldn't be much of a priority.
22) Message boards : Number crunching : Project/Stats/Tables.xml (Message 1910795)
Posted 5 Jan 2018 by Profile HAL9000
Post:
The individual user/host/team credit values are being exported normally - that's where BOINCstats and the other similar sites get their data from - but it's the project aggregate values which are missing. BOINCstats obviously recover the aggregate total by summing the individual values as they process them.

Yeah I was searching the other files to see if <nusers>, <nteams>, <nhosts>, and <total_credit> were moved to one of the other files.
Since SETI@home is often a test bed for BOINC changes it seemed reasonable that they might have been moved to a new location.
23) Message boards : Number crunching : Project/Stats/Tables.xml (Message 1910785)
Posted 5 Jan 2018 by Profile HAL9000
Post:
I wasn't sure if it was missing due recent server issues SEI@home has had, but that info is not present in any of the saved stat dumps I have going back to 2017-07.
It doesn't appear to be in the host, team, or user output files either.
24) Message boards : Number crunching : Intel security flaw (Message 1910694)
Posted 4 Jan 2018 by Profile HAL9000
Post:
I am not really worried about these issues for any of my home systems. As my systems would have to already become compromised by an attacker. At which point they could just access any data directly.

How it effects environments like AWS is really my only concern.
25) Message boards : Number crunching : E5-2670 -> E5-2680v2 (Message 1910689)
Posted 4 Jan 2018 by Profile HAL9000
Post:
When I have that problem (compound, or even finger prints) after opening up some of the used CPU's I've bought in the past, I just go to the medicine cabinet and get some 92% rubbing (Isopropyl) alcohol and a lint free cloth, and a couple wipes with fresh spots on the towel each time & it's all gone. At least that's been my experience. I like the higher proof, more concentrated I guess.

I normally start with dry wipes to get whatever will come off free first. Then hit it with rubbing alcohol and I normally use q-tips until they come back clean. I haven't had any issues leaving any q-tip fluff behind, but it is something I watch out for when cleaning contacts that way.
26) Message boards : Number crunching : Intel security flaw (Message 1910453)
Posted 4 Jan 2018 by Profile HAL9000
Post:
So far the details seem to be that some parts of protected kernel memory can be read.
Some sites are reporting that the issue is also present in ARM processors.

MS has issued the patch in November to users in the "fast ring" of updates and Apple pushed out an initial patch in early December.
27) Message boards : Number crunching : The BOINC site is now "Science United". What the...... (Message 1910446)
Posted 4 Jan 2018 by Profile HAL9000
Post:
It has also removed the BOINC download page. So no new users are currently able to join ANY projects.
Unless they with to participate in the Science United Alpha test.

The archived installer are still accessible via /dl at the moment.
28) Message boards : Number crunching : E5-2670 -> E5-2680v2 (Message 1910206)
Posted 3 Jan 2018 by Profile HAL9000
Post:

What motherboard do you have to put the CPUs into?

I have an Intel s2600cp2j from a Natex bundle and kind of wondering if this would work for me too. $59 per CPU upgrade seems pretty good.


I have 2 - one is an ASUS Z9PE-D16 (the one with 4(!)Ethernet ports), the other is an ASROCK Rack EP2C602.

Both have BIOS which should support the V2 CPUs (waiting for them to come to find out for sure!).

Check out the BIOS in yours to see if it will support the V2s; if not, check the MB webpage to see if such a BIOS is available (fingers crossed!).

EDIT: BTW, my machines both make 75-80K RAC, but both have dual GTX 1080s installed, running 3 WUs each.

Luckily the Intel S2600CP MBs do support the v2 processors, up to 135w, and also allow the use of 1866MHz memory with using v2 processors.
I grabbed a few of the E5-2670 S2600CP MB bundles from Natex last year.
I think the worst thing for me will be putting 256GB of 1866MHz in each board after upgrading the CPUs. That stuff still isn't doesn't come cheap.
29) Message boards : Number crunching : Are all CUDA GPUs supported? Is the GT 1030 unsupported? (Message 1910205)
Posted 3 Jan 2018 by Profile HAL9000
Post:
I imagine a GT 1030 rated for 942.3 GFLOPS will be a bit faster than the old 256MB 8500 GT rated for 28.8 GFLOPS I was using for a few years..
Plus the 1030 can run the OpenCL apps. Which tend to run better with some of the newer data from the GBT.

It wouldn't be a bad idea if they updated the System Requirement section on the SETI@home site to indicate GPU requirements.
30) Message boards : Number crunching : Weekly Schedules on Boinc (Message 1908659)
Posted 23 Dec 2017 by Profile HAL9000
Post:
Add in as many cards as will fit in your computer. Then add this option <use_all_gpus>1</use_all_gpus> to your cc_config.xml file in your BOINC directory with Notepad.Then use Re-read config files from the Options menu in the Manager. You should see all the gpu's that are installed picked up in the Event Log. Boinc will use all available resources.

Weeeelllll... Maybe. I found that I had hit the limit of either 5 or 6 on one of my systems with dual proc Xeons and 10 4x PCI-E slots that I am using USB expanders on, and it has I believe 8 or 9 cards hooked up to it that way, but it ran out of memory space if I remember correctly, and I had to disable them one at a time until it would finally boot. I also had to go into the BIOS and disable everything that I could that wasn't necessary, to free up as much as I could. But in the 'normal' world, I'd say yeah, as many as you can get to fit onto the MB. ;-)

I wonder if that would still be an issue with an UEFI MB & UEFI GPUs.
31) Message boards : Number crunching : Weekly Schedules on Boinc (Message 1908623)
Posted 23 Dec 2017 by Profile HAL9000
Post:
Using a start time of 24:00 and an end time of 00:00 will disable network activity.
That allows two ways to have network activity only on specific days.

You can use 24:00-00:00 for the general time parameters and override on the day you want to allow. The inverse can also be used.

Both of these examples will only allow BOINC to use the network for 1 hour on Friday between 13:00 and 14:00


Another option is set the time you want to allow in the general time parameters and then have a script run boinccmd --set_network_mode disable always and boinccmd --set_network_mode enable auto when you wouldl ike BOINC to stop and start network activity.
32) Message boards : Number crunching : Seti@Home or Atropulse? (Message 1908244)
Posted 21 Dec 2017 by Profile HAL9000
Post:
... and the MB credit is highly dependent on the angle rate (ar) of the packet. So is the runtime between different apps.
http://setiathome.berkeley.edu/workunit.php?wuid=2784838125
MB can pay more than one credit per second. I have not seen AP do that.

Petri

I have, but it requires a Radeon GPU
33) Message boards : Number crunching : Multicore smartphones - how to use their full potential (Message 1907237)
Posted 15 Dec 2017 by Profile HAL9000
Post:
By enabling Developer options/mode they then make other options, such as screen staying on while on charger, available.
Anything similar for Android phones?

Thanks for the idea!
The phone is now lying face-down on my night stand, continuously running two Seti tasks. I also know now why the CPU would clock down as the temperatures in this state are high. For just two cores running at full blast (and a third being used by the OS), temps have gone up from 25C to 45C and they're still rising. Glad it's cold in the bedroom.

The option is Preferences->Developer options->Stay awake (Screen will never sleep while charging)

I ran No Screen Off on that phone before but it would do so for only 10 minutes (600 seconds). I didn't dare try the other one when I read one or more people bricked their device with it. So this is the easier thing to do.
Of course enabling the Developer options is a pre (Open Settings> About> Software Information> More. Then tap “Build number” seven times to enable Developer options in the main preferences menu.)

Where I wouldn't mind leaving the phone alone and walk out the house, I'll unplug it before doing so later on. Especially with the higher heat build-up of the CPU and charger, I'd rather be home when it's doing stuff.

Reducing the screen brightness can help lower the heat build up on some devices.
34) Message boards : Number crunching : BOINC Manager replacement (Message 1907183)
Posted 15 Dec 2017 by Profile HAL9000
Post:
Personally I find the Processes tab in the Win 10 task manager as useful as the Notices tab in BOINC manager.
35) Message boards : Number crunching : Bug in Top Computers List (Message 1907096)
Posted 14 Dec 2017 by Profile HAL9000
Post:
It looks like your other machine has appeared. With your two hosts holding #30 and #40.
36) Message boards : Number crunching : Bug in Top Computers List (Message 1906914)
Posted 14 Dec 2017 by Profile HAL9000
Post:
This could also be related
Replica seconds behind master 66,571
37) Message boards : Number crunching : Bug in Top Computers List (Message 1906912)
Posted 14 Dec 2017 by Profile HAL9000
Post:
I don't recall what the update interval for the top host pages and other stats are. I was thinking it was around 30min or so, but maybe it is much less frequent.

One of my E5-2670 hosts at #351 displays a RAC of 23,356.36 and a Total of 11,331,790 in the host list. Currently it has a RAC of 24,235.82and a Total of 11,345,668.
That host is granted ~30k a day. So a difference of ~14k tells me the host list data is updating, but a few hours old.
I wonder if the data is being updated only when the daily stats are generated now?

Looking at the top list I see your other host
ID: 8011375, #32, RAC 64,249.27, Total 38,640,886
That host, at the time I'm making this post, has a RAC of 66,949.86 and a Total of 38,682,470.
The stat sites show that host normally is granted 40-80k credit a day and there is currently a difference of ~42K.

I still feel like your host 8188478 , with a RAC of 61K, might be stuck between pages.
38) Message boards : Number crunching : Multicore smartphones - how to use their full potential (Message 1906844)
Posted 13 Dec 2017 by Profile HAL9000
Post:

I was thinking of how in works, at least in Windows, when you launch BOINC with CPU affinity. It launches all child processes with the same affinity.

Ah, I see. Is it any tool in Android to see process/thread affinity like in Windows?

I don't know of any apps that show that info, but if there are apps they might require root access. :/
39) Message boards : Number crunching : Multicore smartphones - how to use their full potential (Message 1906786)
Posted 13 Dec 2017 by Profile HAL9000
Post:

Anyway when the phone is idle (second picture) i see only one core seems active, while when running BOINC (first picture) it seems all are active.
Cheers

That's how should be in case each task crunched on own core andphone uses all his computation nodes for crunching.
in my case 2 tasks launched by BOINC but only 1 CPU of 2 remains active.
So, each task takes ~2 times more elapsed time than CPU time to process and phone itself operates as single core devices.

Maybe the manufacture has limited each process that starts to only use one processor with some kind of processor affinity command.
Based on the behavior you have described that seems like something that may be occurring.

But cause BOINC launches 2 tasks there are 2 independent processes actually. Still they both use CPU 0 and CPU1 get switched off soon I stop touching the screen.

I was thinking of how in works, at least in Windows, when you launch BOINC with CPU affinity. It launches all child processes with the same affinity.
It sounds like some kind of aggressive power saving function.
I'm not sure if the default Android developer options, once enabled, would be of any help.
40) Message boards : Number crunching : Multicore smartphones - how to use their full potential (Message 1906604)
Posted 12 Dec 2017 by Profile HAL9000
Post:

Anyway when the phone is idle (second picture) i see only one core seems active, while when running BOINC (first picture) it seems all are active.
Cheers

That's how should be in case each task crunched on own core andphone uses all his computation nodes for crunching.
in my case 2 tasks launched by BOINC but only 1 CPU of 2 remains active.
So, each task takes ~2 times more elapsed time than CPU time to process and phone itself operates as single core devices.

Maybe the manufacture has limited each process that starts to only use one processor with some kind of processor affinity command.
Based on the behavior you have described that seems like something that may be occurring.


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SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.