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Individual grants are listed on the information page.

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User profile Profile Mercer Traieste
I like shiny things.


Nbody Release 1.54
Hey All,

I just released a new version of nbody, version 1.54. There are no major changes, just some minor bug fixes. There was a sampling bug in the velocity assignment which caused it to throw away more possible vels than it should. So the initialization is much faster than before. However, the results should be the same. But faster is always better!

Let me know if there is any issues with the new version/binaries.

Thank you!
11 Nov 2015, 17:45:10 UTC · Comment

Reddit AMA
Hey everyone, our Reddit AMA is today. We will begin answering questions at noon eastern time. Check it out here.

Jake W.
6 Nov 2015, 13:05:27 UTC · Comment

Server Maintenance
Hey Everyone,

I'm going to be doing some quick server maintenance for the next hour or so. Should be finished up by 10pm est. Sorry for any inconvenience accessing the website or forums.

Jake W.
5 Nov 2015, 1:12:41 UTC · Comment

2015 Fundraiser for Milky Way Research
Hello Everyone,

Our fundraising campaign kicks off today. If you are willing and able to financially support Milky Way research (I know many of you already support us with your computations), we would really appreciate it! Click the link to find a letter, video, budget, and a description of our thank-you gifts. The goal seems daunting, but donations of $5, $10, or $20 really do add up and make a difference. If you can afford $100, then we will send you a very nice astronomer-designed T-shirt as a token of our appreciation.

For more information take a look at our fundraiser page here.
2 Oct 2015, 12:50:31 UTC · Comment

Hey Everyone,

Check out what our group has been up to for the last year in our Newsletter!
1 Oct 2015, 1:04:21 UTC · Comment

Deprecation of Linux 32bit
Hey All,

I have some important news. It seems that all of the linux 32bit binaries are failing. These account for 2k of the 70k returned results so far. I do not think it is the binaries that are at fault since I am getting error returns from them (which I wouldn't if it was the binaries failing on startup). It seems that most of the errors are due to outdated libraries from very old versions of linux.

When compiling our binaries, we use the oldest supported version of ubuntu. However, there is still a large user base for versions older than these. A lot of these seem to coincide with linux 32 bit users. Sending out failing workunits would be a waste of extremely valuable volunteer computer time that could be put to use serving other projects. Therefore, we will be deprecating the Linux 32bit version and will not be releasing them in the future.

I thank you all for continuing support,
10 Sep 2015, 19:28:01 UTC · Comment

New Release- Nbody version 1.52
Hey all,

We will be rolling out a new version of Nbody, v1.52, within the next 24hrs. I have left such a large time window because, as these things sometimes go, there could be unforeseen setbacks. I will update everyone once we are about to hit the go button (if only we had an actual go button. That would be so cool.)

We are releasing for windows again. I tested the binaries on a windows machine and they appear to be working. But you never know. Therefore, I will be paying very close attention to the forums for weird behavior. Please let us know!

If you would like more details on what is included in this release, check out my development blog:

Thanks everyone for your support
8 Sep 2015, 18:08:31 UTC · Comment

Fix for stderr.txt Truncation and Validation Errors
Hey Everyone,

BOINC has released a new version of the BOINC client (7.6.6) which fixes a known bug causing ~3% validation errors on MilkyWay@home and other projects. Please update your clients soon to fix this issue. For more info please see my thread in number crunching here.

Jake W.
23 Jul 2015, 12:49:42 UTC · Comment

Nbody Status Update
Hey All,

Just a quick update on the status of Nbody. I discovered that the hanging that people were experiencing were due to the Newton Raphson root finding algorithm which would get stuck in an infinite loop. After looking for why this occurred for sometime, I decided to switch to a bisection method which is insured not to get stuck.

The slow nature of the initialization of the plummer was found to be an error in the calculation of one of the limits of integration in a crucial integral that was being calculated. What a time it was finding that! With that limit fixed, it seems that the initialization takes a few seconds!

I am currently unit testing the code and hopefully should get a lovely new version in a couple of weeks.

25 Jun 2015, 16:28:41 UTC · Comment

Hey all,

Jake Weiss and I will be making fairly regular updates on the status of the project under the Application Code Discussion part of the forum.

25 Jun 2015, 15:59:12 UTC · Comment

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