New Ramses Release 2026.05

After the new Ramses Meeting in Korea, it’s time for a new Ramses release! On the menu, a lot of performance improvements, many many bugs corrections, an armada of new tests, a brand new developer docs and a bunch of convenient new features.

Change summary

For users

  • A lot of performance improvements on the hydro kernels (by @tinecolman) and the sink particles (by @georgesabboudeh)
  • Many bugs were fixed (by @Martin-Rey, @tinecolman, @nbrucy, @Sadanari0614, @jokirosdahl, @cosmos-in-us, @robelgeda, @James11222, @bcommerc, @Adnan-Ali-Ahmad)
  • A new utilitary to write grafic-style input files (by @tinecolman)
  • It is now possible to select both analytical forces with the poisson solver (by @simonb282)
  • It is now possible to output conservative instead of primitive hydro variables (by @tinecolman)
  • The EOS were improved (by @tinecolman)
  • There is now an option to have output at exact time (by @wzzhang97).
  • The documentation was improved (by @nbrucy and @georgesabboudeh)

For developers

  • We have a new documentation for developers following the first Ramses dev school. Discover it here (by the SNO’s Developer school working group, @tinecolman, @blaizot @nbrucy @mtrebitsch, @cphyc and @jokirosdahl)
  • A lot of new tests were added, including crossing beams, stromgren2D, RT dirac, Ponomarenko by @matthiasglz, restart and improved SOD test by @nbrucy, refinement test by @bcommerc, clumpfinfer, star formation and SN feedback tests by @pocvirk, cosmo amr and 1D advection tests by @tinecolman, and movie and chemistry tests by @jokirosdahl. This is the results of the SNO’s test working group.
  • The code quality was improved (by @tinecolman and @mtrebitsch). The biggest changes are in how the parameters are read.
  • The tests results are now displayed directly as a comment in the PR (by @nbrucy)

Posted

in

by

Noé Brucy