describes gyrfalcON which is the executable code within the NEMO N-body system.
The Nemo system is installed at /software/physics/nemo on phcomp.ucsd.edu.
If you are in your home directory switch to cshell by typing /bin/csh. The directory paths are set up by executing: source /software/physics/nemo_cvs/nemo_start which will set up all the required environment variables. In the case of trouble check whether the user environment variable NEMO is set to /software/physics/nemo_cvs (setenv NEMO /software/physics/nemo_cvs).
The command gyrfalcON with appropriate parameter inputs will run the code. For instructions, consult the User Guide and the manual page ( gyrfalcON). The file conversion programs are tabtos and snapprint, and the Aarseth to binary snapshot conversion is discussed in the ntmpv manual page.
1 mkdir falcon-2019
2 cd falcon-2019
3 put your galaxy into the directory (or,we will create one later)
4 cp galaxy x.tab
5 gyrfalcON
6 echo $SHELL (make sure your shell in terminal window is changed to csh: /bin/csh)
7 source /software/physics/nemo_cvs/nemo_start
8 env
9 gyrfalcON
10 tabtos in=x.tab out=x.snap header=nbody,time
block1=mass,pos,vel
11 ls
12 gyrfalcON in=x.snap out=xrun.snap tstop=10 Nlev=1
eps=0.01 kmax=3
13 ls
14 tsf xrun.snap
15 snapprint in=xrun.snap options=m,x,y,z,vx,vy,vz
header=t > xrun.tab