Welcome to MilkyWay@home

Posts by Dr Who Fan

1) Message boards : News : Nbody release v1.72 (Message 67887)
Posted 10 Nov 2018 by Dr Who Fan
Post:
@PROJECT ADMINS: USERS STILL HAVING PROBLEMS WITH LATEST Nbody release v1.72 BUILD.

SEE > http://milkyway.cs.rpi.edu/milkyway/forum_thread.php?id=4347
2) Message boards : Number crunching : Very long N-Body simulation (Message 67855)
Posted 30 Oct 2018 by Dr Who Fan
Post:
Had a N-Body task error out with Disk usage limit exceeded error after consuming CPU time: 2 days 13 hours 11 min 8 sec.

Task 47513706

Milkyway@Home 1.72
MilkyWay@Home N-Body Simulation (mt)
de_nbody_10_24_2018_v172_20k__data_3_1540379102_25482_0
Reported: Computation error (196,)
Max Virtual RAM Used 32.84 MB
Max Physical RAM Used 34.13 MB
3) Message boards : News : Nbody Release 1.60 (Message 64544)
Posted 12 May 2016 by Dr Who Fan
Post:
Killing this one off... Only 6.919% done in 21:39:49 CPU HRS
Running WAY TO SLOW

Name ps_nbody_5_3_16_v160_1_inertia_p95_1461261003_1206610_0
Application	MilkyWay@Home N-Body Simulation 1.60 (mt)
Workunit name	ps_nbody_5_3_16_v160_1_inertia_p95_1461261003_1206610
State	Running
Received	11-05-2016 11:35
Report deadline	23-05-2016 11:35
Estimated app speed	2.25 GFLOPs/sec
Estimated task size	3,402 GFLOPs
Resources	4 CPUs
CPU time at last checkpoint	21:39:49
CPU time	21:43:04
Elapsed time	07:25:17
Estimated time remaining	99:50:36
Fraction done	6.919%
Virtual memory size	41.73 MB
Working set size	42.35 MB
Directory	slots/4
Process ID	3348
4) Message boards : News : Nbody Release 1.56 (Message 64367)
Posted 10 Mar 2016 by Dr Who Fan
Post:
Seems the RUN TIME ESTIMATES are WAY OFF!

On my 8 core PC I have one that is STILL running with just slightly over 16 hours (Multiply by 8 CORES = 128+ HOURS CPU TIME) currently at about 84.65% completed.

1.56 MilkyWay@Home N-Body Simulation (mt)
ps_nbody_3_8_16_orphansim_v156_3_1453826702_1075098_0
16:06:55 (117:34:50) 84.650%


The Original Run times estimates were about 20 minutes.
5) Questions and Answers : Windows : n-body WU going for 7 day deadline. Bug in n-body app regards /ncpus/N//ncpus/ config setting? (Message 64264)
Posted 21 Jan 2016 by Dr Who Fan
Post:
KILL IT!!!!! - IT SHOULD NEVER RUN THAT LONG. One to Two hours is the MOST I have ever seen on a normal N-body MT task.
Sounds like a very OLD BUG has crept into their code again.
6) Questions and Answers : Web site : Country listing for project servers (Message 64232)
Posted 9 Jan 2016 by Dr Who Fan
Post:
ALL SERVERS for this project are USA (Troy, NY) based at Rensselaer Polytechnic Institute's (rpi.edu)
7) Message boards : MilkyWay@home Science : Wild Milky Way Map Reveals Hidden Loops of Multicolored Microwaves (Message 63808)
Posted 16 Jul 2015 by Dr Who Fan
Post:
Wild Milky Way Map Reveals Hidden Loops of Multicolored Microwaves
Currents of bold color swirling in the image above look like an impressionist's painting, but are actually a map of microwaves emanating from the Milky Way galaxy.

This vivid snapshot captures light radiating outward as charged particles zip through in the galaxy's magnetic fields. The low-energy light waves also reveal the presence of a ring of dust that cordons off a third of the sky.
8) Message boards : MilkyWay@home Science : The Milky Way galaxy could be up to 50 per cent wider than the previously estimated (Message 63217)
Posted 12 Mar 2015 by Dr Who Fan
Post:
Dr. Newberg was mentioned in RPI's on-line newsletter on 2015-03-09: The Corrugated Galaxy—Milky Way May Be Much Larger Than Previously Estimated
Findings Led by Rensselaer Polytechnic Institute Researchers Published in the Astrophysical Journal

The Milky Way galaxy is at least 50 percent larger than is commonly estimated, according to new findings that reveal that the galactic disk is contoured into several concentric ripples. The research, conducted by an international team led by Rensselaer Polytechnic Institute Professor Heidi Jo Newberg, revisits astronomical data from the Sloan Digital Sky Survey which, in 2002, established the presence of a bulging ring of stars beyond the known plane of the Milky Way.


Read a publicly available version of the research article

Watch a 20-minute video explaining the findings for the general public

Watch a 50-minute video explaining the findings in greater detail

... It also was mentioned in an article in The Register: Does my star look big in this? Milky Way 50 per cent fatter than expected
9) Message boards : MilkyWay@home Science : Our Milky Way Galaxy: A Traveler's Guide (Infographic) (Message 63145)
Posted 15 Feb 2015 by Dr Who Fan
Post:
From Space.com: Our Milky Way Galaxy: A Traveler's Guide (Infographic)

Our home in space is a vast galaxy containing 400 billion suns, at least that many planets, and a 4-billion-solar-mass black hole at the center.

Link to Infographic & notes
10) Message boards : News : Milkyway/Bitcoin Utopia Update (Message 62247)
Posted 3 Sep 2014 by Dr Who Fan
Post:
CZ,
PLEASE READ POST# 62152 "Message boards : Number crunching : Malware Concerns over Bitcoin Utopia"
Both Adaware and Spybot tell me that the BitCoin Utopia download contains a Trojan,so much as I'd love to contribute, I think I'll pass


keputnam Bitcoin Utopia does not contain a Trojan. It is a false flag. Just exclude the Boinc directories and it'll stop.


11) Message boards : Number crunching : New N-Body Release 1.42 (Message 62125)
Posted 7 Aug 2014 by Dr Who Fan
Post:
Add another one to the error list task# 802961249:

Client state: Compute error
Exit status: 15 (0xf) Unknown error number
    Stderr output
    <core_client_version>7.2.42</core_client_version>
    <![CDATA[
    <message>
    The system cannot find the drive specified.
    (0xf) - exit code 15 (0xf)
    </message>
    <stderr_txt>
    <search_application> milkyway_nbody 1.42 Windows x86 double , Crlibm </search_application>
    RHO MAX IS 7.40308
    7.40308Could not load Ktm32.dll (126): The specified module could not be found.

    Could not load Ktm32.dll (126): The specified module could not be found.

    Error reading histogram line 37: 1 -48.5294117647 0.0439655511 0.0013148967
    02:22:26 (1932): called boinc_finish


    </stderr_txt>
    ]]>

12) Message boards : MilkyWay@home Science : Tour the Milky Way in 20 billion pixels (Message 61436)
Posted 22 Mar 2014 by Dr Who Fan
Post:
NASA has launched an interactive map of the Milky Way galaxy, constructed over the course of 10 years from more than 2 million infrared images from the Spitzer Space Telescope.

Most of us will never leave the Earth -- but that doesn't stop us dreaming of the stars. There are a few tools that let you explore, though -- and NASA has just launched a killer.

Created from the Galactic Legacy Mid-Plane Survey Extraordinaire (Glimpse) project, it's the most comprehensive visual map of the Milky Way Galaxy released to date -- and yet it only shows just over half of the galaxy's stars. Stitched together from more than 2 million images taken by the Spitzer Space Telescope over the course of a decade, the zoomable, 360-degree image comes in at 20 gigapixels. Since its launch in 2003, Spitzer has spent a total of 4,142 hours taking pictures of the Milky Way in infrared light.

"If we actually printed this out, we'd need a billboard as big as the Rose Bowl Stadium to display it," Spitzer Space Science Center imaging specialist Robert Hurt said in a statement. "Instead we've created a digital viewer that anyone, even astronomers, can use."

Link to full article at Cnet.com
13) Message boards : Number crunching : Tips and tricks to improve CPU and GPU crunching. (Message 61119)
Posted 15 Feb 2014 by Dr Who Fan
Post:
Don't know what could possibly go wrong.

COMPUTER MELTDOWN is what could happen if you let your laptop run at such high temperatures
14) Message boards : MilkyWay@home Science : The Archaeology of the Stars (Message 61098)
Posted 12 Feb 2014 by Dr Who Fan
Post:
Four years ago, Anna Frebel, a young astronomer at the Massachusetts Institute of Technology, found an ancient star in a neighboring galaxy whose chemical composition proved nearly identical to some unusual stars on the outskirts of our own galaxy, which are older than the Milky Way itself

It was a striking discovery, suggesting that the relatively young Milky Way is growing by conquest — “cannibalizing” nearby older dwarf galaxies. And it underscored the importance of a new way of learning how the universe evolved from the Big Bang to the modern cosmos.

Click here for full article.
15) Message boards : MilkyWay@home Science : Billion-pixel Gaia camera to map (Milkyway) galaxy in 3D (Message 60635)
Posted 21 Dec 2013 by Dr Who Fan
Post:
The European Space Agency successfully put its Gaia satellite into orbit, with the hopes of unrolling a stunning map of the Milky Way in 3D.

The Milky Way is about to be seen in a whole new way.
The European Space Agency has successfully launched its Gaia satellite into orbit, bringing a 1 billion-pixel camera detector to map our galaxy in 3D.
The stargazer lifted off on Thursday aboard a Soyuz-Fregat rocket from a launch pad at Sinnamary in French Guiana. Its mission is to map the precise location of over a billion stars.
Its instruments are expected to help discover planets, asteroids, and supernovas, as well as reveal a better understanding of the origin and structure of the Milky Way.

Link to Full article at CNet
16) Message boards : MilkyWay@home Science : Evolution of Milky Way Galaxy Revealed by Hubble Space Telescope (Message 60601)
Posted 15 Dec 2013 by Dr Who Fan
Post:
Astronomers have pieced together a detailed picture of how our Milky Way galaxy came together, using Hubble Space Telescope photos of 400 similar galaxies at various stages of evolution.

"For the first time we have direct images of what the Milky Way looked like in the past," study co-leader Pieter van Dokkum, of Yale University in New Haven, Conn., said in a statement.

"Of course, we can't see the Milky Way itself in the past. We selected galaxies billions of light-years away that will evolve into galaxies like the Milky Way," van Dokkum added. "By tracing the Milky Way's siblings, we find that our galaxy built up 90 percent of its stars between 11 billion and 7 billion years ago, which is something that has not been measured directly before."

To read FULL article at Space.com click here
17) Message boards : News : Separation Modified Fit v1.28 Release (Message 60211)
Posted 25 Oct 2013 by Dr Who Fan
Post:
All 3 task downloaded, crashed & burned almost right of way on my WIN XP SP3 (32 bit) PC 366384:
Tasks 594028263, 594028085 & 593781021.
All with same error message: Exit status -1073741795 (0xffffffffc000001d) Unknown error number
Stderr output
<core_client_version>6.12.34</core_client_version>
<![CDATA[
<message>
 - exit code -1073741795 (0xc000001d)
</message>
]]>
18) Message boards : News : testing work generation with 'ps_separation_14_2s_null_3' (Message 54830)
Posted 20 Jun 2012 by Dr Who Fan
Post:
CPU version still failing on Linux/Ubuntu 12.04 using BOINC 7.0.28:
ps_separation_14_2s_05_3_test_1_1339497601_4215469_1
Stderr output
<core_client_version>7.0.28</core_client_version>
<![CDATA[
<message>
process exited with code 1 (0x1, -255)
</message>
<stderr_txt>
<search_application> milkyway_separation 1.00 Linux x86 double </search_application>
Unrecognized XML in project preferences: max_gfx_cpu_pct
Skipping: 50
Skipping: /max_gfx_cpu_pct
Unrecognized XML in project preferences: allow_non_preferred_apps
Skipping: 1
Skipping: /allow_non_preferred_apps
Error loading Lua script 'astronomy_parameters.txt': [string "argv = {...}..."]:1: arguments not set
Error reading astronomy parameters from file 'astronomy_parameters.txt'

Trying old parameters file
Error reading number_parameters

05:55:37 (7350): called boinc_finish

</stderr_txt>
]]>
19) Message boards : Number crunching : Clearing results from database quickly? (Message 4657)
Posted 9 Aug 2008 by Dr Who Fan
Post:
I also noticed completed work disappearing from the work unit list in less than 5 min... As others have said would be nice to have them be available for 24/48 hrs.




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