[linksnapzz]

A late friend who worked on type II supernova simulations was once invited to talk about his team's software with some gentlemen at an NNSA lab, Los Alamos or Livermore or Sandia (I forget which one.)

At the conclusion of the talk, the DOE guys said appreciative things about the current work, but also pointed out that certain avenues of investigation into certain characteristics might lead to the gov't declaring this software classified, and restricting who might have access to it. My friend was at the time not a US citizen, so he would have been locked out of contributing to his own work.

"Nice piece of software you have there, would be a shame if something...happened to it..."

[eesmith]

There's a story about a US astrophysicist grad student working on stellar evolution. A visiting Soviet scientist came to give a talk. At the end the student asked a question about one aspect of the talk, something like, how do you know the plasma is transparent to photons at that temperature? The visiting Russian just said "it is." Later, the grad student mentioned it, quizzically, to his advisor. His advisor pointed out that it was something that came out of nuclear bomb research.

I looked, but could not find that anecdote.

[Sephr]

Did they attempt to open source the software?

[linksnapzz]

IIRC, the code in question was written under an NSF grant, and probably not that hard to obtain.

[subcosmos]

Hopefully not