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New QuarkStars application
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Author | Message |
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Send message Joined: 25 Feb 15 Posts: 50 Credit: 5,684,705 RAC: 0 |
We have just started the tests of a new application. The main goal is to analyse the possibility of observational detection of quark stars. These objects are composed of quarks, i.e. particles smaller than neutron or proton. Quark stars are nearly similar to neutron stars, but we may observe their impact on stellar populations. ------------------------------------------ Właśnie uruchomiliśmy nową aplikację. Jej głównym celem jest analiza możliwości obserwacyjnej detekcji gwiazd kwarkowych. Te obiekty składają się z kwarków, czyli cząstek mniejszych niż neutrony czy protony. Gwiazdy kwarkowe są prawie identyczne z gwiazdami neutronowymi, ale jest możliwe wyznaczenie ich wpływu na populacje gwiazdowe Grzegorz Wiktorowicz National Astronomical Observatories, Chinese Academy of Sciences |
Send message Joined: 4 Feb 15 Posts: 846 Credit: 144,180,465 RAC: 0 |
QuarkStars application can use up to 350MB hard disk space in temporary files. Krzysztof 'krzyszp' Piszczek Member of Radioactive@Home team My Patreon profile Universe@Home on YT |
Send message Joined: 29 Apr 15 Posts: 33 Credit: 19,566,183 RAC: 0 |
Is this new application compatible with Raspberry devices? If not I will have to create a separate profile for it. It did say that linux under the applications page, but just want to make sure. Thank you |
Send message Joined: 4 Feb 15 Posts: 846 Credit: 144,180,465 RAC: 0 |
At the moment - isn't. We have to make some batches first and look at results before we do app compilation for Android and Raspberry devices.. Krzysztof 'krzyszp' Piszczek Member of Radioactive@Home team My Patreon profile Universe@Home on YT |
Send message Joined: 2 Jun 16 Posts: 169 Credit: 317,253,046 RAC: 0 |
It looks like I started getting these around 11am EST. I should get to some of them by tomorrow. |
Send message Joined: 2 Jun 16 Posts: 169 Credit: 317,253,046 RAC: 0 |
It seems like some units are getting sent out to quite a few users well before the deadline: http://universeathome.pl/universe/workunit.php?wuid=6189406 http://universeathome.pl/universe/workunit.php?wuid=6255363 |
Send message Joined: 7 Jan 16 Posts: 20 Credit: 208,458,667 RAC: 0 |
I've had 2 of these, both were cancelled by the server, any idea why? Pete |
Send message Joined: 28 Feb 15 Posts: 253 Credit: 200,562,581 RAC: 0 |
I've had 2 of these, both were cancelled by the server, any idea why? If you look at your Work Units that were cancelled by server, you will probably find that they were successfully completed by two other crunchers. That is what happens with projects that use a quorum, where two users must receive a work unit to validate against each other. There is always a time limit, and if one user does not return the result soon enough, they send it out to a third user (you in this case). Then, if the one user returns it before you can get to it, the server sends out an abort to your machine, so you don't waste time on it. There may be other scenarios where that occurs, but I see that commonly on other projects, though it is occurring more often here. Probably the time limits have been set rather short on Universe. |
Send message Joined: 4 Feb 15 Posts: 846 Credit: 144,180,465 RAC: 0 |
I've had 2 of these, both were cancelled by the server, any idea why? Correct. Also, with new application server always more carefully and sends third WU bit faster then usually. Krzysztof 'krzyszp' Piszczek Member of Radioactive@Home team My Patreon profile Universe@Home on YT |
Send message Joined: 2 Jun 16 Posts: 169 Credit: 317,253,046 RAC: 0 |
A third WU? Try 10! http://universeathome.pl/universe/workunit.php?wuid=6189406 Duplicates 2 through 9 were sent within 1 hour of each other. How much as 'a bit faster'? |
Send message Joined: 4 Feb 15 Posts: 846 Credit: 144,180,465 RAC: 0 |
Look at CPU times for extra WU's. All of them doesn't take any CPU time at all. I'm sure that with more WU's situation with them stabilise. (Anyway, on my hosts this doesn't happened). Krzysztof 'krzyszp' Piszczek Member of Radioactive@Home team My Patreon profile Universe@Home on YT |
Send message Joined: 4 Feb 15 Posts: 48 Credit: 15,956,546 RAC: 0 |
I am guessing here that due to the reduced run time for Quarkstars against BHSpin (in my case it is over 2,000 seconds less), the credit has now been reduced accordingly from 333.33 to 250.00 per work unit. Conan |
Send message Joined: 2 Jun 16 Posts: 169 Credit: 317,253,046 RAC: 0 |
Seems roughly inline with BHSpin v1 PPD except for the BHSpin tasks with 10 in the name. Those are still way too long. |
Send message Joined: 4 Feb 15 Posts: 17 Credit: 158,222,691 RAC: 0 |
Will there be another tasks for this application? Or maybe it was just a single shot? |
Send message Joined: 25 Feb 15 Posts: 50 Credit: 5,684,705 RAC: 0 |
Yes, we plan to develop this project further! Quark Stars have been proposed to explain observations of very massive neutron stars, but these objects are hardly distinguishable from each other. The population studies are necessary, which will be probably available soon with Square Kilometre Array (SKA). However, a lot of theoretical study have to be done before any information may be dug out from observations. This is the goal of Quark Star application. Nevertheless, we are pioneers in such studies so a lot of tests is yet in front of us, before a large scale computation could be started. Grzegorz Wiktorowicz National Astronomical Observatories, Chinese Academy of Sciences |
Send message Joined: 4 Feb 15 Posts: 17 Credit: 158,222,691 RAC: 0 |
Thanks for info Grzegorz. That sounds very interesting. |