What's New in NEMO

• (Oct 20, 2024) more code-rot fixed for gcc-14
• (Jun 21, 2024) enhanced tabsmooth with more filters
• (Apr 20, 2024) experimental falcon program to process falcON style (HDF5) snapshots for falcON2. "mknemo falcon2" has been created to get the source code for falcON2.
• (Apr 1, 2024) experimental nemovar version to communicate variables, phase 1.
• (Mar 19, 2024) the nemobench script has an extra first argument, a label. this will break "make bench" if you don't "make build1" to update the scripts.
• (Mar 15, 2024) experimenting with a new program nemovar, to communicate variables between tasks
• (Feb 19, 2024) version was upgraded to 4.4.4 (no real reason other than the sphinx based manual is now essentially cleaned of old latex code. Still a few incomplete sections
• notebooks with bash kernel
• the new (sphinx based) manual now produces a clean PDF version

• (Jan 18, 2024) bash kernels added to our install_anaconda3 script, example in rebound1.ipynb
• (Jan 17, 2024) Added some support for interfacing with REBOUND ( reb2s, s2reb, reb_viewer, and reb_integrate)
• (Jan 8, 2024) At AAS243 in New Orleans an iPoster on NEMO was presented.
• (Jan 1, 2024) Added experimental yapp interface using gnuplot
• (Dec 27, 2023) Added starlab man page, since mknemo can build it.
• (Dec 23, 2023) henyey, a periodic orbit searcher, resurrected from an earlier 1991 attempt.
• draft iPoster for AAS243
• (Oct 12, 2023) fix density of hackdens, which assumed mass = nbody
• (Oct 11, 2023) add qtrun as modern alternative to tkrun - the format has been enhanced as well, but is not quite backwards compatible.
• (Jul 7, 2023) python install now places the python_start.[c]sh scripts inside the anaconda3 directory

• (Jun 15, 2023) Experimental support for modulefiles, e.g. "module load nemo/git". tcl is back!
• (Mar 29, 2023) A very ancient bug in the compilation of hackcode1 was fixed. Although the error can be fixed by swapping around a data item in a C structure, the basic error was a sloppy Makefile! Look for issue 98 in github.
• (Jan 3, 2023) an experimental Software Carpentry style NEMO introduction
• (Dec 29, 2022) an odd problem with parsing DOS or MAC text files should be resolved now in the patches table I/O system, as well as text files with a non-closing final line.
• (Dec 18, 2022) fitsccd/ccdfits conversion now maintains header MUCH better (CUNIT, TELESCOP, RESTFRQ)
• (Dec 10, 2022) revived partiview install via mknemo. Confirmed snapspecks(1NEMO) still works.
• (Dec 5, 2022) ccdellint(1NEMO) can now integrate in ellipses with a different from the default metric=2
• (Nov 29, 2022) python-unsio and python-unsiotools have recently been updated.
• ccdellint can now properly handle 2D maps, and almost related, snapshell can integrate in arcs instead of full shells.
• (Nov 20, 2022) We now have quetta, ronna, ronto and quecto prefixes!
• (Nov 10, 2022) starlab is "back" in NEMO! The command "mknemo starlab" will build it, the 181 binaries will be in $NEMO/opt/bin.
• (Nov 9, 2022) better mknemo build of netcdf4 where it needs to depend on hdf5

• (Nov 1, 2022) wrapping up a release since NEMO poster was presented at ADASS2022
• (Oct 28, 2022) nemopy is now a python module, so far only getparam is implemented, weakly but functional . Installation with the usual "pip install -e ."
• (Oct 27, 2022) rudimentary support for giza as an alternative to pgplot. "mknemo giza" is also able to build the latest giza, and --with-yapp=giza will be needed in configure.
• (Oct 25, 2022) revived internal pgplot build in install_nemo.sh as yapp=pglocal, ("mknemo pgplot" will also work) plus some improved yapp_plplot filenaming
• (Oct 24, 2022) improved falcon tools build on mac
• (Sep 16, 2022) the pedit pedit(8NEMO) script now handles parameter files that are structures as "value = keyword = comment"
• (Aug 17, 2022) new scripts: nemoplot(8NEMO) to auto-plot ascii tables, and nemopars(8NEMO) to extract parameters from bash-style rc files.
• (May 15, 2022) table I/O: column 0 was not understood, added column range check
• (May 12, 2022) default gfortran compilation now add -std=legacy, since the compiler is now using a picky 2018 standard
• (May 10, 2022) gaia_snapshot.py - downloads a gaia based snapshot, optionally with a density estimator, great for viewing in glnemo2 - PJT + JCL
• (May 8, 2022) the new table interface has been merged into the master branch. The table(3NEMO) manual page has implemented most of the important parts of the planned API. This should make it easier to work with tables with an arbitrarely large number of columns and/or rows, as long as they fit in memory.
• tablines was renamed to tabrows to be consistent with row/col concept in the new table interface.

• (Mar 19, 2022) images should all use axis=1; image writing will warn if not
• (Feb 10, 2022) branch table2 created to finish the table V2 implementation.
• (Feb 2022) Various tools for the (snapshot/orbit) BOOM project upgraded: snaptipsy, tipsysnap, snapcopy, stoo, orboom, orbstat. Started an example in boom.md
• (Jan 20, 2022) Get some working exaples with gadget files and clarify current state of their versions. The man page gadget will be updated for this.
• (Jan 8, 2022) Fixed WCS in potccd, added new program ccdl2 to find Lagrange points in a 2D grid potential.

• (Jan 6, 2022) Merged the nearly complete M1 branch to master; some merging with other old code for new release
• (Dec 30, 2021) New parameter grabbing program (shortcut for grep/awk...) txtpar and big update/bugfix for tabdms
• The default anaconda3 install is now 2021.05
• (Oct, 2023) gnuastro is now installable via mknemo (courtesy ADASS meeting) - trying out a demo program fitsgnu
• (July 12-15 2021) This week is the AMUSE workshop. So a few NEMO-ish highlights:
  • Python interface for the fast-multipole gravity solver falcON
  • ClusterTools reads gyrfalcon (NEMO) data
• Images now read the Object name, coming from FITS, and pass it on. Like the proper handling of the WCS axis=1 mode, not all programs have been converted.
• (22-may-2021) New stacking style program: ccdstack
• (6-may-2021) New stacking style program: rvstack
• (2-may-2021) Result on an M1 compilation showed 4/6 codes with an impressive NEMOBENCH5 score of 1310, but also showed the default compiler (hpc.sourceforge.net) was much more strict C99 and failed many programs. Work to do, and its taking place in the M1 git branch. The final score when all 6 codes were working was 1269.
• (29-apr-2021) One more code added to the 5sec bench, now called "make bench5" (from bench3) - the NEMO5 score will be defined as 5000/average_runtime, such that a score of 1000 is the first benchmark machine I used (i5-1135G7)
• (27-apr-2021) We started to convert the old NEMO manual from latex to reStructuredText (RST) so changes are immediately visible on ReadTheDocs.
• (20-apr-2021) Added new historic program epic5 to compute Lindblad orbits in an oval potential. The original idea is outlined in 1994ASPC...66...29L and the final code presented in 2012MNRAS.421.1089P .
• (19-apr-2021) Added new historic program mkvh60 and added von Hoerner's 1957 (!) random number generator to create this style of homogeneous spheres. See 1960ZA.....50..184V
• (15-apr-2021) Trying out a new automated bibcode listing which summarized and links all codes in NEMO that have refereed papers on ADS (as opposed to Papers with Code)
• (7-apr-2021) Apple's long SIP arm reared it's ugly head again, a side effect of the MAC fix caused falcon's bodyfun to fail on linux. should be fixed now.
• Benchfile introduced, with a function similar to the Testfile, all parallel to the Makefile
• The "make bench5" command will now run 5 nbody codes, each tuned to take 5sec cpu on an i5-1135G7

       $ /usr/bin/time src/scripts/nemo.bench mode=3
       NEMOBENCH: (2021-03-21) bench3566979 : nbody0=3072 nbody1=10240 nbody3=1000000 size=256 clean=1 bsf=0 tmp=bench3566979
       Linux XPS13 5.6.0-1048-oem #52-Ubuntu SMP Thu Feb 18 11:37:00 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
       Fri 09 Apr 2021 08:44:36 PM EDT
       Equal CPU time per code, no output files to check
       Codes:  directcode [mkplummer] gyrfalcON hackcode1 [mkorbit] orbint potcode
       Tstop: 4.28 5.64 7.89 787400.0 6.66 [5sec CPU for each on a 11th Gen Intel(R) Core(TM) i5-1135G7 up to 4.2GHz]
       .1.23.45.
       CPU_USAGE  directcode  :  5.00  5.00  0.00  0.00  0.00  1840028621
       CPU_USAGE  gyrfalcON   :  4.97  4.96  0.00  0.00  0.00  1840029122
       CPU_USAGE  hackcode1   :  5.01  5.00  0.00  0.00  0.00  1840029619
       CPU_USAGE  orbint      :  5.04  5.04  0.00  0.00  0.00  1840030121
       CPU_USAGE  potcode     :  5.04  5.02  0.01  0.00  0.00  1840030625
       Cleaning bench3566979 (use clean=0 to prevent this)
       25.07user 0.02system 0:25.09elapsed 100%CPU (0avgtext+0avgdata 7084maxresident)k
       72inputs+4040outputs (3major+6909minor)pagefaults 0swaps
     

  If you run this on older or newer machines, you will most likely see a divergence in speed ratios between the different programs.

• (12-feb-2021) wrapped up the MAC SIP issues (or so I thought)
• (11-feb-2021) added new program ccdspec with a simple correlation statistic to assess normalcy
• (8-feb-2021) back to previous default: shared libs remains enabled by default, so on a mac you will need to use --disable-shared now.
• (6-feb-2021) major issue on recent Mac: latest (clang 11.0.0)) Xcode does not compile gyrfalcON anymore, but brew based gcc-10 (10.2.0) works. More importantly, the SIP implementation causes shared libraries to not work in scripts, or any system that will then filter out $DYLD_LIBRARY_PATH. Thus the default is now that shared libraries will not be made. Use --enable-shared if you want it back (e.g. on linux). Note that the NEMO library has not worked in shared library mode for a while.

• (28-jan-2021) latest benchmark on the fastest laptop I have:

     $ /usr/bin/time src/scripts/nemo.bench 
     NEMOBENCH: (2020-11-22) bench3555175 : nbody0=3072 nbody1=10240 nbody3=1000000 size=256 clean=1 bsf=0 tmp=bench3555175
     Linux XPS13 5.6.0-1042-oem #46-Ubuntu SMP Thu Jan 7 00:51:04 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
     Wed 27 Jan 2021 10:47:32 PM EST
     Times:  directcode hackcode1 mkplummer gyrfalcON potcode mkspiral ccdmath ccdpot mkorbit orbint
     Skipping BSF testing. Use bsf=1 to enable this.
     CPU_USAGE directcode : 2.35    2.35 0.00  0.00 0.00  1750203216
     CPU_USAGE gyrfalcON :  1.75    1.75 0.00  0.00 0.00  1750203579
     CPU_USAGE hackcode1 :  1.26    1.26 0.00  0.00 0.00  1750203452
     CPU_USAGE mkorbit :    0.00    0.00 0.00  0.00 0.00  1750204776
     CPU_USAGE mkplummer :  0.01    0.00 0.00  0.00 0.00  1750203578
     CPU_USAGE mkspiral :   4.26    3.09 1.16  0.00 0.00  1750203905
     CPU_USAGE orbint :     0.64    0.64 0.00  0.00 0.00  1750204777
     CPU_USAGE potcode :    1.49    1.49 0.00  0.00 0.00  1750203755
     Processor:  11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
     Cleaning bench927512 (use clean=0 to prevent this)
     15.08user 1.32system 0:16.40elapsed 100%CPU (0avgtext+0avgdata 174172maxresident)k
  
  

• (jan-2021) CCD images should now all be using a reference pixel, where in the old code (0,0,0) was hardcoded and Axis=0. Images should now have Axis=1, otherwise code was not converted yet.
• (jan-2021) new programs: ccdmoms, ccdellint, lmtinfo, ccdzshift
• Code made C99 clean, mostly.
• (oct-2020) new programs: tabgen, snapnear, bigread, snapipdist new script; mk_cone, mklut
• (30-may-2020) the command mknemo barolo attempts to install the BBarolo program for rotation curve analysis of 3D cubes. Another useful tool to automated parameter editing is pedit. An example is in a new script do_neeleman
• (16-may-2020) new program mktabdisk to make fake disks to simulate observe PPV cubes
• (11-may-2020) benchmark streamlined:

      
    $ /usr/bin/time src/scripts/nemo.bench
    NEMOBENCH: (2020-05-05) bench129749 : nbody0=3072 nbody1=10240 nbody3=1000000 size=256 clean=1 tmp=bench129749
    CPU_USAGE ccdpot :     11.94   11.93 0.00  0.00 0.00  1718371453
    CPU_USAGE directcode :  4.02    4.01 0.00  0.00 0.00  1718369452
    CPU_USAGE gyrfalcON :   2.49    2.48 0.00  0.00 0.00  1718370096
    CPU_USAGE hackcode1 :   2.41    2.39 0.01  0.00 0.00  1718369854
    CPU_USAGE mkorbit :     0.00    0.00 0.00  0.00 0.00  1718372647
    CPU_USAGE mkplummer :   0.01    0.00 0.00  0.00 0.00  1718370095
    CPU_USAGE mkspiral :    8.17    5.90 2.23  0.00 0.00  1718370635
    CPU_USAGE orbint :      1.16    1.15 0.00  0.00 0.00  1718372647
    CPU_USAGE potcode :     2.90    2.89 0.00  0.00 0.00  1718370345
    Cleaning bench129749 (use clean=0 to prevent this)
    30.83user 2.53system 0:33.39elapsed 99%CPU (0avgtext+0avgdata 174280maxresident)k
    0inputs+4413976outputs (0major+509968minor)pagefaults 0swaps
  

  although this is on my T480 Lenovo laptop (i7-8550U CPU @ 1.80GHz) I have yet to see any desktop being to beat this.
• (26-apr-2020) tabplot and tabhist have a new pyplot= keyword to write a template starting point for matplotlib plotting
• (24-apr-2020) Experimental debian packages for NEMO
• (23-apr-2020) small fix for Ubuntu 20.04 LTS
• (10-apr-2020) the FAQ has been revived.
• (21-mar-2020) RSS feed re-instated. Now using https://teuben.github.io/nemo/rss.xml
• (13-mar-2020) fixed the mknemo uns_projects install, which now installs both unsio and uns_projects. After this the following command may be an amusing screensaver

        mkspiral - nbody=10000| gyrfalcON - - step=0 eps=0.05 kmax=6 logfile=/dev/null | uns_density - - all | glnemo2 - all play=t
        

• (14-feb-2020) resurrected an easier install of gadget2 via mknemo, added a galaxy benchmark
• snapmstat now computes the select= string for glnemo2 to help visualizing complex systems with many mass species
• Moved more package install scripts into mknemo.d, where they can use the new tar caching (hdf4, hdf5, cfitsio, gsl, fftw, wcslib) scheme
• Some integration of NEMO's configure with the falcON makefile's (currently -fopenmp and -march=native are set this way)
• install instructions updated; see $NEMO/usr/zeno
• A frontend to the LP-VIcode, which computes a series of chaos indicators for orbits, is available as runlpvi
• (29-dec-2019) Each NEMO program can now use openmp calls, but I continue to be frustrated how hard it is to speed things up.
• (26-dec-2019) Some overhaul of the autoconf based configure/make system. For HDF4, HDF5 and CFITSIO there are now direct install methods which install these packages under $NEMO/opt. This also bypasses a lot of the issues of non-standard installation paths that centos and ubuntu are often using. There is also a new "simpler" install_nemo.sh script.
• (20-dec-2019) jupyter notebook support, as long as you find a way to copy the new nemo_start.py somewhere in your $PYTHONPATH. More to come here.

• Added the Henon Heiles 1964 potential, another Princeton contribution to the field!
• Added optional (but now defaulted as such) writing Phi/Acc to orbits
• (dec-2019) simplified install with a travis C/C++ CI on github, results on Github Actions.
• (dec-2019) better support for BASH users, notably the falcON environment
• (nov-2019) New program bsf to help with benchmark data regression.
• (nov-2019) New program sdinfo to test SDFITS files
• (nov-2010) A new maintenance script "mktasklist" will maintain the "help=u" tasklist, possible for codemeta.json/CITATION.cff (nov)
• (nov-2019) The optional "make python" target can now install an anaconda3 private to NEMO. Use python_start.sh to add to your shell. Install this after NEMO has been installed. It will also install python tools used in stellar dynamics
• (oct-2019) Some support for EAGLE data with eaglesnap. Inspired by martini. There is an example showing this in action
• Sanders and Huntley 1976 orbits added
• galaxy V1.5 now supported
• install script renamed from test_a_new_nemo_git to install_nemo
• (feb-2019) support for NBODY6 via runbody6
• (feb-2019) darwin (MacOSX) installation now defaults to the one using Homebrew, though with "brew install pgplot" installed version, you can now also use "install_nemo brew=1"

• conversion of our source code based in CVS to GIT. Source on https://github.com/teuben/nemo, docs now served via github pages on https://teuben.github.io/nemo. The conversion process is when you see versions 3.9.x.
• pgplot has been split into a separate git repo on https://github.com/teuben/pgplot, though this code is shared with miriad. Since MIRIAD has not been converted to git yet, sans the fork at carma-miriad, this will need to be resolved. Apart from the dormant Caltech site, various Linux and Mac distros also make pgplot available, e.g. in Ubuntu "apt install pgplot5" works with NEMO as well. Another PGPLOT re-implemention seems to be in the giza package, but not all pgplot functions are fully implemented yet.
• The old NEMO website should disappear.... but will likely remain available for a while.

• lots of small updates in 2015 and 2016, but no numbered release was created.
• (16-oct-2015) update glnemo2 to 1.9.0, reading 2D and 3D fits files
• (14-feb-2015) update glnemo2 to 1.8.1, Qt5 now fully supported, linux binaries are now also available.
• (20-jun-2014) updated to UNSIO 1.0.1 : here
• (19-jun-2014) updates to gyrfalcON

• (14-mar-2014) lots of minor updates to man pages and a number of ccd image tools
• (13-mar-2014) update glnemo2 to 1.6.1, it now compiles with qt5 (and qt4 still too)
• (12-mar-2014) updated UNSIO to 1.0.0!!, this also include python support (see $NEMO/py/modules after this has been installed)
• (17-sep-2013) new runbulgerot program to compute rotation curves of Sersic bulges (Noordermeer,2008)
• massive updates to glnemo2/unsio
• (29-mar-2013) updated supper for s2plot. No changes needed to snaps2plot itself.
• (10-mar-2013) added 3body.tab and a script mk_3body to run the orbits from the Suvakov & Dmitrasinovic (2013) paper.
• (13-feb-2013) more consistent usage of voxel units and using moments and such that reporting total emission from cubes and moment maps via snapgrid, ccdmom is consistent.
• (24-jan-2013) clean up some macos 10.8 installation issues, now fully clean, though Ubuntu 12 now needs the DSO linking fix (e.g. uncomment the NEMO_CFLAGS1 macro in $NEMOLIB/makedefs)
• (17-jan-2013) branched MATDEF, to clarify CDEF and FORDEF with the goal to switch over to FORDEF
• nothing new yet, updates to rundiskfit expected.

• (13-sep-2012) rundiskfit frontend to run the Spekkens/Sellwood velfit updated version dubbed diskfit. See their website. (new)
• (17-aug-2012) ccdsky,a program to simplify scaling between simulations and observations. (new)
• as of a while back, within MIRIAD you can install NEMO with the command mir.install nemo
• (8-feb-2012) version 1.40 of glnemo2 released .
• NEMO is now in ASCL
• many updates to gryfalcON
• (15-may-2011) orbintv high order variable timestep orbit integrator (new)
• (3-may-2011) version 1.20 of glnemo2 released - major release. See also this movie and the glnemo2 website
• (24-feb-2011) version 1.11 of glnemo2 released
• (14-feb-2011) snaps2plot (new)
• (8-feb-2011) ccdhist (new)
• (3-feb-2011) velmap (new) and velfit (updates)
• (24-nov-2010) improved version of UNSIO (also handling NEMO style pipe), including some new tools in the UNS_PROJECT, such as uns_2dplot. See also a new example Compiling and linking does require a few extra tools and libraries, such as cmake, sqlite.
• (24-may) some more adjustments in the default gfortran scheme

• a pre-release of the UNSIO, Unified Nbody Snapshot I/O, library , as discussed at the amuse2010 meeting in Leiden. It also uses a new cmake procedure for installation.
• gfortran now the default compiler (V4.1 or earlier cannot use pgplot/gif drivers)
• (23-apr-10) major rework on glnemo2:
  • added experimental reader for RAMSES smulation files
  • added gyrfalcON's runtime manipulator (see glnemo's README file)
  • a glnemo2 man page
• (24-dec-09) tkrun can now save/load key files
• (dec-09) a new type "halfp" (16 bit floats) added to NEMO, can be used in I/O.
• (9-dec-09) tablsqfit now has an option to fit with errors in X *and* Y, and uses mpfit (working) or NR's fitexy (testing) for this. Currently a compiler option since it is being tested.
• (14-sep-09) density2 (new), a faster version of hackdens
• (10-aug-09) ** certain files > 2GB failed, now fixed **
• (8-aug-09) snappat (new), convert a snapshot to a Particle-Attribute-Time (PAT) cube for fast processing in e.g. IDL
• during PiTP: several programs updated, a few new programs: mkh41 , mk2body , orbmax ,
• (jul-09) glnemo2, an significant update to glnemo (new)
• (jun-09) snapmap (new), alternative to snapgrid
• (apr-09) snapifu (new), alternative to snapgrid for irregular grids
• (26-feb-09) runmond (new), a frontend to Ciotti et al.'s MOND integrator
• attempting a clean compile with g++ instead of gcc

• (20-jun) various updates to the NEMO library which will require a complete "cd $NEMO/src/;make clean install" because a few fundamental header files have changes.
• (24-sep) added mkgalaxy, a frontend for mkWD99disc and mkhalo to build a halo-buge-disk galaxy model (Dehnen)
• (25-may) patches to allow objects > 2GB. (allocate.c, stdinc.h, filesecret.c)
• (8-nov) added nemo2gadget and snapgridsmooth (JCL)
• (7-nov) added gadget2nemo and a toy program mkcosmo for some cosmology trials.
• (26-sep) glnemo now also can display velocity vectors in 3D
• (31-aug) fixed various installation problems, added optional png support for pgplot, fixed some SINGLEPREC issues
• (15-aug) resurrected hackcode3 and quadcode (and various other prototype fixes)
• (10-aug) slightly overhauled directory structure for the public version of falcON [use: cvs update -dP to update ]. We are still shaking down some installation issues with this.
• (6-aug) Various small updates cleaned up from the GH-2006 summerschool - they will trickle in over the coming week.

• (5-aug) general cleanup for the Puebla release
• (1-aug) (upd) gyrfalcON cleaned up during GH2006 school.
• (12-jul) (upd) new release of falcON: new bodyfunc (an improved version of NEMO's bodytrans) + improved manipulator support [gcc 4.1.1 initially failed, now ok]
• (6-jul) (upd) fixed gadget interfaces
• (22-may) (new) CGS integrator released (Trenti)
• (26-apr) (upd) glnemo (V0.90) - animations, octree engine (Lambert)
• (15-apr) various fixes for installing under macosx 10.4 (the story hasn't ended yet)
• (31-mar) gyrfalcON updated to 3.0.5. utils/ split from falcON/. Now also works with gcc 4.1.0 (Dehnen)
• (8-mar) (upd) configure now derived from an .ac file, not .in, adding UNFIO_HDR_SIZE into config.h
• (28-feb) (new/upd) runbody4 interface to runing Nbody4 (or Brut4), and adapted unfio to deal with the new gfortran unformatted I/O format.
• (19-feb) (upd) mdarray data are now in sequential memory. Several programs (mkconfig,mktt72,mkpolytrope) were updated so they can use dynamic memory.
• (7-feb) (upd) snapgrid (V5.1) new option integrate=t to deal with particles that represent a density.
• (9-dec) (upd) stropen() will now read files that look like URL's
• (5-dec) (upd) pgplot install able to select compiler dialects and detect x86_64
• (21-nov) (upd) tablsqfit and tabnllsqfit added fit=gauss1d and gauss2d
• (16-nov) (upd) various small bugfixes submitted for the falcON tools (Dehnen)
• (15-nov) (upd) snapshell (V2.1) rewritten and different more clear user interface.
• (7-nov) glnemo now has sample manipulator included to watch a gyrfalcON "live". You will need to use cvs update -d for this update.
• (2-nov) new programs: ccdmerge and snapplot3
• (27-oct) gyrfalcON has been updated to 3.0.4, the manual page has also been updated. Major new feature is the use of accname= instead of potname=, an enhanced version of potential. Run-time manipulator files (manipname=) are also introduced in this version.
• (17-sep) The layout library can now use GNU readline to read commands. Testing in tabplot using the readline=t keyword. Also added support in configure to force readline off.
• (20-aug) [new] gadget.install: script to aid and simplify in installing various versions of Gadget2. In addition, gadget I/O will get optional support for hdf5 format.

• (1-aug) Resurrected dtos. and stod to keep the conversion of data between nemo and starlab going.
• (11-jul) some more patches for Fedora Core 4
• (11-dec) glnemo, fairly major update, also works with gcc4.
• (4-jul) (new) ccdmos simple mosaicer
• (2-jun) new routines put_data_blocked and get_data_blocked allowing blocked (sequential) I/O. These routines work much like their random counterparts, put_data_ran and get_data_ran except I/O must occur sequentially. No doubt some bugshaking will be needed.
• (13-may) (new) tabextinct and tabint.
• (13-may) various cleanups for 64 bit based machines, made GSL a little easier to be enabled.
• (12-may) (new) tabfilter and tabtrend
• (9-may) (new/upd) tabdate date/time conversions in tables.
• (18-apr) (new) mkgalorbit computes galactic orbits from observational quantities
• (11-apr) added nmodel= to mkplummer (mostly for benchmarking)
• (28-mar) some additional fixes for cygwin, but still too far from an automated install. See benchmarks for some standard NEMO benchmarks. Basic conclusion: don't use cygwin for any serious work,particularly the I/O is nearly a factor of 10 worse, and C++ code runs about 2-4 slower. C and Fortran much closer.
• (25-mar) (new) snappot computes potentials/forces from analytical potentials
• (16-mar) yapp's pl_matrix() now has a blankvalue argument, for better ccdplot results
• (15-mar) cleaned up a number of files so NEMO compiles with g++
• (14-mar) many revisions to io_nemo (JCL)
• (7-feb) (new) potrot computes an (angular averaged) rotation curve from a potential.
• (2-feb) moment's have been updated to handle moving moments
• (5-jan-2005) (new) ccdgen to create simple 2D objects in an image
• (26-dec) added simplified HDF install at boostrap

• (24-dec) fixed a few Mac-specific problem (out3 vs. OUT3.. grrrr) and added valgrind support to the testsuite
• (17-dec) (new) hdfwedge cloned off hdfgrid to create more flexible pictures of wedges.
• (15-dec) hdfgrid can now grid in a pic=t (Particle in Cell) mode
• (10-dec) Fixed a number of HDF access problems in tsd, sdsfits and hdfgrid when dealing with rank=3 files.
• (3-dec) (new) glnemo, a Qt based interactive visualization program (Lambert). here is an example of a movie created with this program. In addition, mknemo now supports non-standard installations via scripts in src/scripts/mknemo.d
• (23-nov) fitsccd now has axistype= keyword to force new-style images
• (15-nov) fixed weighting error in nllsqfit if errors not the same
• (13-nov) added a set of example scripts to the web page
• (18-oct) implemented the "cvsid" string in programs. help=I will print the CVS ID, whereas help=V the human created version
• (19-sep) all C potential's now support potential_float and potential_double
• (6-sep) LocalMakedefs file in any directory will be optionally used by NEMO's Makefiles
• (25-aug) acceleration: improvements (Dehnen)
• (19-aug) maxsizes.h : provide a default in $NEMO/inc/max. For those using CVS updates, you have to manuallly copy it:

  	cp $NEMO/inc/max/maxsizes.h $NEMOLIB 
  

  else the installation will automagically take care of this.
• (19-aug) perorb : fixed allocation and added new last= keyword
• (29-jul) cfitsio.install and test_a_new_nemo_cvs now simplify using CFITSIO
• (15-jul) acceleration: a new more general version of potential (Walter Dehnen)
• (14-jul) some important fixes for -DSINGLE_PREC users [you should recompile the library and relink all/most executables]
• (1-jul) fits8to16 (new): convert 8bit to 16bit image.
• (24-jun) the MacOSX notes have been updated with some more unsderstanding of the pitfalls.
• (13-jun) rotcurshape: can now optionally return the full fit in the residual map instead.
• (26-may) various improvements in rotcurshape (and rotcur) underway.
• (21-may) gyrfalcON: new update with new internal manual pages. The version number hasn't changed, still reported to be 2.1
• (13-may) the user interface (getparam.c) now supports help=c, which will report CPU usage for each NEMO program on debug level 0.
• (12-may) gyrfalcON has been updated to 2.1, which came with a few new programs, e.g. lagrange_radii, density_centre, mkdehnen, mkking, mkplum.
• (8-may) infrastructure changes to images, to deal with an astronomical WCS. in particular, snapgrid can now grid most common astronomical coordinate systems, see also wcs for more background info.
• (25-apr) added NEMO I/O to treecode1, this plot summarizes the performance and force accuracy for a N=4000 plummer sphere.
• (24-apr) few minor fixes for gnu compiler 3.4.0
• (23-apr) new timers functions available for intel/amd
• (22-apr) tkrun more flexible in reading "#>" directives
• (15-apr) gyrfalcON has been updated to 2.0.1, the manual page has also been updated.
• (12-apr) User and Programmers guide: slowly etching away more old lies
• (12-apr) activated a new toplevel 'make bins', which should make as many programs as are possible (depending on correct settings of your makedefs file). Good excersize of your CPU and HD. Instead of the usual 100 or so binaries with the testsuite method, this one gives you nearly 200! The manual page tree contains 270 entries, so still some more additions to do.

• (11-apr) User and Programmers guide: first 4 chapters now updated.
• (11-apr) removed YAPPLIB from the environment into makedefs
• (11-apr) yanc, the predecessor of falcON, has been removed from the tree and CVS.
• (11-apr) A small patch is still needed for MacOSX 10.3 users, read item 3 at the bottom of this link (almost perfect)
• (11-apr) CVS (or any other) updates should read upgrade details
• (11-apr) merged from the branch NemoHost3 the following changes are made in the build system, as well as a few fixes.
  • A change in the directory structure in the sense that $NEMOHOST subdirectories in $NEMO/{bin,lib,obj} are now no longer supported; instead files are directly placed in the {bin,lib,obj} directories. The environment variables $NEMOBIN, $NEMOLIB, $NEMOOBJ are accordingly modified, otherwise it has very little impact on a running system. The $NEMO/host tree has disappeared, and is replaced with the $NEMO/opt tree.
  • added more programs to the testsuite
  • fixed two bugs in bodytrans: when more than one new bodytrans function was given in the same program, and fixed bodytrans usage in pipes again. (bodytrans is now also removing the /tmp/bt* files)
  • fixed PGPLOT interface for multi-panel programs (this may not work well if PGPLOT_FOREGROUND/BACKGROUND are used)
  • MacOSX (10.3) support (as much as the filesystem with its filecasing problem supports)

• (11-apr) merge with 3.2.1 occured, this version thus never released
• (24-mar) magalie updated to 1.2
• (23-mar) snapaddbh (new)
• few other small things, lost from the records due to an editor glitch

• (23-mar) magalie (NEW: wrapper program) (Christian Boily)
• (18-mar) nemo_io updated to handle eps (particle softening)
• (15-mar) added GalactICS from Kuijken-Dubinski
• (15-mar) orbint: variable timesteps
• (13-mar) various improvements to nbody0, mostly due to the problems around the figure8 orbit
• (5-mar) mkkd95 (NEW: wrapper program to the Kuijken-Dubinski disk generation tools)
• (24-feb) fixed nbody00 for integrations of orbits like figure8
• (20-feb) newton0 (NEW ; an old program from 1987 finally cleaned up and added to NEMO)
• (19-feb) dtos: added an option to select what to output (experimental)
• (18-feb) command(3EMO): now reads command files
• (17-feb) directcode (NEW): classic direct N-body code
• (15-feb) better support for compilers like intel80 for fortran-c interfaces (still some problems left)
• (14-feb) configure/makedefs: pretty important subtle bug forgetting -fpic compiling for shared objects
• (13-feb) tab2xml: new program (actually writes VOTables, not arbitrary xml files)
• (11-feb) fixed bootstrap pgplot install problem, as well as in AAA_SOURCE_ME
• (10-feb) some more SPH support in snapshots
• (7-feb) flowcode V0.6: implemented diffusion for orbits
• (1-jan) get_line would terminate on blank line: many programs changed for new get_line interface
• (29-dec) snaptrim: allow extraction of something nearest to requested time
• (28-dec) intel compiler 8.0 causes link problems with Fortran/C/Nemo
• (27-dec) mknemo updated to 2.0, it now detects that there is a new version, useful if you like to use the new -l and -u flags , run mknemo -u; cp $NEMO/src/scripts/mknemo $NEMOBIN and never need to update this command again.

• (27-dec) allow 64 open files (NEMO_MAXFD)
• (24-dec) command (NEW), optionally using readline, to embed simple interactive commands
• (16-dec) ccdppm (NEW), scripted up to create all color lookup tables (lut)
• (20-nov) mkflowdisk (NEW), flowcode, vrtm51 (NEW): various M51 project related improvements
• (25-oct) plplot support revived in prepartion for their 5.2.2 release (--without-double needed for configure)
• (16-oct) splitstream.cc (new, via falcON environment; WD)
• (15-oct) dtos, stod: made it work for starlab4 again
• (9-oct) snapplot(v) : support for the new style (pos/vel) snapshots
• (21-sep) nemo_file_lines: changed meaning of deflen, which means most programs that used nmax= should get a negative count argument.
• (19-sep) a number of new programs in src/tutor that can be more easily used as template/teaching tool
• (10-aug) kstwo: indexing bug, tabcmp also needs recompilation
• (30-jul) snapfit: various fixes and improvements going on...
• (29-jul) changed SIGN -> SNG since num.rec. uses it (NEMO's compilation thus failed)
• (28-jul) gyrfalcON: important version 1.6.1 for gcc 3.3 (Walter Dehnen)
• (15-jul) snapfit: new program (imported from 1992 code base!)
• (14-jul) minor updates on io_nemo (JCL)

• (12-jul) various minor changes to aid a full install on Mac OS X10.2 (to be checked for 10.1) (for loadobj the dlcompat library needs to be installed first)
• (12-jul) getparam: added "--" processing
• (7-may) tabhist: handle multiple columns (using mdarray)
• (6-may) mdarray: a useful set of multi-dimensional array alloc/free routines
• (23-apr) ellipse: new program to toy with ellipses and orbits
• (4-apr) tabnllsqfit: fixed bug in using dycol=, added dypow=
• (5-mar) potcode is being hacked on, it can now analytically integrate epicycle orbits
• (2-mar) wcs tools added in src/image/wcs
• (1-mar) ccdmath: allow fiddle with WCS; new online manual pages using rman
• (1-mar) orbits now have a slot to store errors in the I.O.M.
• (17-feb) snapgalview: new program, and added some pre-defined bodytrans for glat/glon/mul/mub
• (15-feb) Testfile supports nemo.coverage analysis, if enabled
• (13-feb) nlllsqfit: added an 'arm3' (simultaneaous m=1,3 fitting) (Shetty)
• (12-feb) rotcur/rotcurshape: fixed serious bug in residual map computation
• (6-feb) ccdvel: modulated orbits allowed (mexp=, phexp=)
• (4-feb) patch for io_nemo to make it compile on some newer versions of linux with gcc3 (JCL)
• (10-jan) renamed some little used macros (SGN,RNG,RND) to longer names
• (7-jan) some work on making the important parts compilable under g++ (read: get GalPot to work for gcc3 for e.g. potlist)

• (2-dec) NEMO tutorial (recepies) for mass99 users
• (2-dec) added vogl ($NEMO/usr/vogl) to NEMO's CVS release
• (26-nov) snapidl: new program to pipe data (binary) into IDL.
• (23-nov) tabclip: new program to clip tabular data
• (4-oct) tabtranspose.c: new program

• conversion to CVS, all of NEMO is now until CVS control
• solaris configure broken again
• snapgrid: can produce infinity with using small VZ smoothing ?
• (fixed) hdfgrid: parsing error
• (upd) tabcmp: added KS2 test to table comparison
• (upd) xyzview: new option to view an orbit at the same time
• (fixed) configure does not seem to handle MESA correctly
• (proposed new) add indexed keywords to getparam.c
• (proposed new) shared library support using libtool
• (proposed new) a new system keyword to export named parameters (export=)

• bug fix getparam.c, added NEMO/src/image/hdf/cmhog (mainly hdfgrid)
• better integrated autoconf/configure support
• documentation (although the manual is still not updated)
• A linux binary release is now available through astromake, but this version may be somewhat older than the latest source code.

• Version 2.4.0 released, which is the one that comes after 2.3.8. It will contain two major changes, and a number of small changes and additions:
  • code should now run in -DSINGLEPREC mode. Some problem areas remain, which are planned to be solved in upcoming patches:
    • use of vectmath in potential's is not good, since potentials are hardcoded in double precision, and vectmath uses 'real' and the precision flag.
    • function pointers cannot always be generic proc's, they need to be typedef'd by function if the arguments are float's (some compilers may pass unspecified arguments as double)
  • various directories now have a Testfile, which are gnu compatible makefile's used to run a testsuite of programs through nemo. You can look at our most recent testsuite.log and compare with your version (if we have it online).
  • fortran (src/kernel/fortran) support now compiled in the library by default. Portability not really looked into.
  • xyz programs (snapxyz, xyzview) for 3D viewing and movies formally added. You either need to compile the vogl library, or on an SGI you can use the native GL library (much nicer and faster).

16 February 1997

• SGI IRIX 6.2 has some problems with loadobj, some routines don't compile, and it cannot handle more than 5 expressions in e.g. snapprint. For one, I probably have to break down and make libnemo a shared library. this has been solved in 2.4.0
• Linux slackware3.1 (and possibly some other distributions too) may need /lib/gnumalloc.so to be linked in. There is a problem with the malloc/free in the standard libc (e.g. 5.3.12 is broken). You can look at my $NEMOBIN/cc for linux (ELF) how i've solved this.
• (TBA) Sellwood's 3D cartesian grid code is going to be incoorporated in NEMO. Thanks Jerry!

22 October 1996

• (23-oct) Some linux (slackware 3.1) releases may need a patch/fix due to a libdl bug
• (22-oct) Release 2.3.7 with a fix to make linux (default is now ELF based, linux-aout present but not officially supported) work out of the box. sun5 (solaris) and sgi (irix 5.x) are also supported out of the box; all remaining OS may need some patch work.
• (22-oct) Old tar and patch files have been deleted. Only the current version (2.3.7) is present.
• (13-sep) User interface bug fixed for telnet sessions under solaris 2.5 [blank environment variable was present] (getparam.c)

30 August 1996

• (30-aug) Release 2.3.6 after this summers work in Amsterdam with full support to import and export starlab datafiles. (loadobj.c)

13 July 1996

• (12-jul) linux ELF scripts (cc, ldso) were broken
• (29-jun) fix ldso script for SGI
• (28-jun) Release 2.3.5 formally released,
• The hosttype command is now fully based on the uname command the host is supposed to have.
• Linux default is now ELF based, although some support for a.out based systems remains.
• Various minor bugfixes and updates to the manual, man pages and a variety of programs.

4 April 1996

• Support for the new ULTRA-Sparcs underway. So far only a fix to the hosttype script was needed (Solaris 2.5)
• Linux ELF support, solved by patching scripts ldso, cc. PGPLOT 5.0.3 from sunsite works fine. Needs dummy nemomain.o(MAIN__) to fool f2c.

28 January 1996

• I'm playing with a new design NEMO homepage; be careful, it is using some HTML3 features that may only be accessible through e.g. Netscape2
• The Linux for Astronomy CD-ROM is out, and contains a copy of NEMO.

15 December 1995

• made the dynamic object loader work for OSF1 V3.2 (dec alpha) (should also work for SGI and LINUX, but the next release will make this formal)
• new command 'ldso' that aids dynamic object loading more portably accross architectures.
• various minor bug fixed and features added, e.g.
  • mkop73: fixed bug on solaris
  • snaprotate: allowed more than 3 rotations
  • snapscale: reporting
  • ccdmom: new program to take moments on a cube (simple version)
  • fitstiff
  • ccdfits, fitsccd: resolved some WCS issued around the CTYPE's

5 October 1995

• The so-called portable random number generator from the Numerical Recepies library that NEMO uses is perhaps portable, but goes out of bounds a bit too often. Fixed by letting xrandom() spin until it's in range. This is part of release 2.3.3
• loadobjDL.c will be patched to work with SGI IRIX 5.x (IRIX 4.x is hopeless, I've given up on that now). IRIX 6.x to be confirmed. Not in release 2.3.3 yet.

22 July 1995

• I've added a known bugs list, of which eventually most will go into this whatsnew list.
• NEMO Release 2.3 is out!
  • Undoubtedly there will be small patch (incremental tar) files coming out. Such new versions will be versioned with patchlevels, e.g. nemo_2.3.11.tar.gz will be patchlevel 11, and would require you to load 11 upgrades, or get the new tarfile.
    • 5-jul-95 (2.3.1) bootstrap file upgraded, small manual and man pages were changed, versioning through the user interface, nemoinp, tablsqfit
    • 22-jul-95 (2.3.2) bug fix in snapslit, and Makefile support for automated updating the anon.ftp area.
    • 5-oct-95 (2.3.3) xrandom/ran3 bug fixed, added snapplotv and ccdsharp
  • If your site uses Solaris *with* a LD_LIBRARY_PATH environment variable, check with your system mananger, or contact me if you have trouble.
  • I'm still working on the manual.

19 April 1995

• Release 2.3 is about to come out! From now on a release will have a version consisting of major (2) and minor (3) version id, with patchlevels.
• 26-may-95: too much time spent in HDF and FITSIO routines for some of my own work. In addition something with -xcg92 compilation broke on our solaris installation, and that needs to be tracked down too. And some other fires.. Soooo, Release 2.3 won't be out until mid june.

• LINUX version is running, including loadobj . Since PGPLOT has been ported to LINUX, there is nothing holding official LINUX support back now. I expect this new release (version 2.3) to be in mid february.
• Although we have always had support for a single precision NEMO, ANSI compiling with more strict rules has set me back considerably. Until *everything* relevant has been properly prototyped, compiling with -DSINGLEPREC is not recommended. I hope to fix this soon, but not in release V2.3
• Added some hdf utilities: tsd , fitssds , sdsfits , and snaphdf .

16 November 1994

• We are now running NCSA's new httpd (V1.3) server. This has a new powerful server include mechanism, and lots of other goodies. There may be some problems with the current info you are reading, since some files had to be converted. We are running this server with the option that (server include) parsing is only done when the execute bit of a file is turned on. It seems that that the new netscape WWW browser has some problems with this, but NCSA Mosaic doesn't.

8 October 1994

• An Nbody Data Interchange Format discussion group has been set up. This includes an email exploder ( nbody@astro.umd.edu ) and various archives of data in different formats and accompanying software.
• An X-windows YAPP (NEMO's graphics interface) has been installed. This software was written by Patrick Frisch, who has written a number of programs within the NEMO environment. ( pfrisch@walhall.uni-sw.gwdg.de ) You can pick up the patch file (a compressed tarfile) from our anonymous ftp, and overload it on your current NEMO. Be aware, it also contains a NEW NEMORC startup file.
• The ``public domain'' PLPLOT package (obtainable from dino.ph.utexas.edu ) can now be used with a new YAPP device driver yapp_plplot.c.

7 August 1994

• An experimental reference listing on N-body and-related methodologies .
• The manual pages have now been converted using a patched up roff2html converter, and has links into the SunOS manual pages, where appropriate. You can start at the seconds half of the man1 index page.
• The gaussfit program, for arbitrary least squares fitting and robust estimation, has been added with a NEMO interface.
• snaprect has been extended with more options to determine the shape of a potential, in addition it can determine the axial ratio profile.

12 June 1994

• A bootstrap loader is supplied that takes away virtually all the work in installing NEMO.
• A QUESTIONNAIRE is available which will be used to design and prototype an interchange and archive format for particle simulation data. Please look at it, load it to your local disk ( Options/Load To Local Disk in Xmosaic), fill in the blanks, and send me your copy by e-mail.
• Added Quinn/Balcells conversion of their xvp format in the form of a sample xvpsnap program. A few small mostly cosmetic (less verbosities, smaller nmax) were needed to relevant I/O subroutines.

10 May 1994

• Couchman' cosmological N-body simulator is available in $NEMO/usr/couchman. NEMO wrappers for his programs prun and pstart have been written. In addition, this resulted in an experimential I/O library with access to fortran unformatted binary files from C routines. See the manual pages for unfio(3) and memio(3) .

25 February 1994

• The TIPSY package has been installed; the source code is intended to reside in $NEMO/usr/tipsy. Documentation is still limited, but being worked on.
• A new version of Starlab has been installed. We upgraded from 1.0 to 1.1.1. We now follow the convention of directory names, so $NEMO/usr/starlab/1.1.1 will be the value of $STARLABPATH.

1986

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