News

New N-Body Runs
I have started:

de_nbody_11_29_no_dark
ps_nbody_11_29_no_dark

and am starting right now:

ps_nbody_11_29_half_dark
de_nbody_11_29_half_dark

Jake
29 Nov 2013, 18:22:51 UTC · Comment

New MilkyWay Separation Modified Fit Runs
Hey all,

I have posted some new runs over the past couple days:

de_modfit_15_3s_128wrap_3
ps_modfit_15_3s_128wrap_3
de_modfit_15_3s_bplmodfit_128wrap_1
ps_modfit_15_3s_bplmodfit_128wrap_1

As usual, if there are any issues with any of these runs please post them here. A current known issue is that modfit seems to be running slower on some AMD GPUs than the flag ship application does. Also, the later two runs are expected to take between 50% and 100% longer to run than the first two runs. This should be accounted for automatically by the server in credit allocations after about a day.

Thank you for your support,

Jake W. 20 Nov 2013, 6:15:09 UTC · Comment

New Separation Runs
I've started three new separation runs:

de_separation_10_2s_sSgrFreeScale_1
ps_separation_10_2s_sSgrFreeInertia_1
de_separation_11_2s_sSgrFree_1

The first two are old runs, but the search method parameters have been modified to try and reach a faster convergence. The 3rd run is a new search for secondary structures in the Galactic North.

As always, let us know if you see any problems with these!

-Matthew N 5 Nov 2013, 23:42:30 UTC · Comment

New Secondary Stream Searches
I've started some new secondary stream searches:

de_separation_09_2s_sSgrFree_1
de_separation_10_2s_sSgrFree_1

These are looking to characterize the secondary component of the Sagittarius tidal stream.

As always, let me know if anything seems off with them. 18 Oct 2013, 20:14:08 UTC · Comment

New MilkyWay Separation Modified Fit Runs
Hi all,

I would like to test the modified background fit again. This means I will be starting new runs:

de_modfit_15_3s_bpl_128wrap_1
ps_modfit_15_3s_bpl_128wrap_1

This should hopefully be seamless to users. Also, the run time of these compared to previous runs may be different, we will monitor this and treat it appropriately. If there are any issues with these runs, as usual post them here.

As a side note, I am taking down Windows 32 bit applications for the duration of these runs as the MilkyWay Separation Modified Fit application does not seem to be running smoothly on this platform for a large group of users.

Jake W. 15 Oct 2013, 21:33:51 UTC · Comment

Server Reboot
The server is going down for a reboot in one hour.
It should be up shortly after 3pm Eastern Time.


Jeff 2 Oct 2013, 17:56:50 UTC · Comment

Users Auto-Aborting Work Units
Hello all,

It has come to our attention that some users have been setting their BOINC clients to auto abort work units from specific applications. Doing this sends an error results back to our server which then causes some work units to be unable to validate. Essentially, it prevents some of our hard working crunchers from getting their due credits. The proper way to prevent yourself from getting work units from a specific applications such as our beta applications N-Body or Modified Fit, is to go to your account page on our website (http://milkyway.cs.rpi.edu/milkyway/home.php). Under the Preferences section please select the link for your preferences for this project. There will then be a link to edit these preferences on this page. Halfway down your preferences, there will be some check boxes in the "Run only the selected applications" section. You will only receive work units for the applications you have check marks next to. For reference: Milkyway@home is our flagship application and is considered stable and in its final released state; Milkyway@home N-body Simulation is our beta version N-body simulation and orbit fit program; Milkyway@home Separation is an, as of now, unused application; Milkyway@home Separation (Modified Fit) is our beta version separation code testing new models for both streams and background in the Milky Way Halo. As usual if you have any issues with this method or questions about it please post them here. We appreciate your cooperation and understanding in this.

Thank you,

Jake W.

TL;DR: If you are auto-aborting work units please stop and use the method above to prevent users from losing credits and to prevent problems in our algorithms. 26 Sep 2013, 19:41:43 UTC · Comment

N-Body 1.38
Expect N-Body 1.38 on Monday or Tuesday.

When the time comes, post comments here.

Jake 20 Sep 2013, 19:52:44 UTC · Comment

Separation Modified Fit v1.28 Release
Hey all,

Separation Modified Fit is releasing v1.28. This version will include:

Fixes for validation and Segfault errors

Hopefully, all will run smooth after this release. I am going to continue letting it crunch the current runs that seem to be working smoothly. If they continue to run smoothly, I will transition to a new run using background model.

As usual please post all errors with the new release here.

Thank You,

Jake W. 17 Sep 2013, 19:11:19 UTC · Comment

N-Body
Hi everyone!

You may have noticed the lack of n-body runs. This has been due to the fact at a recent conference, we thought of some really cool science we could try to implement in the next release. We have derived a new dwarf galaxy model to make our simulations more realistic. I have spent the last few weeks deriving, implementing, and testing this new model, and I think we are almost ready for a new N-Body release!

Stay tuned for more information about the upcoming release!

Jake 17 Sep 2013, 1:54:43 UTC · Comment

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