Page History

...

1. Log into lcls-dev3  (ssh <user_name>@lcls-dev3)
   
   

2. Create an Epics Application ($EPICS_IOC_TOP)

1. Need to cross-compile for target architecture

2. Check st.cmd file for all vioc’s - verify that it calls rtPriortiesSetup.cmd, which sets the real-time priority for threads
3. Set-up Directory Structure for cpu’s/vioc’s  under $IOC_DATA
   1. Generate cpu-##-## directory (In this directory, screenlog.0 is generated automatically)
   2. Generate a vioc-##-## directory for each vioc running on this machine
      1. Under each vioc directory, create an autosave, autosave-req, and iocInfo directory
      2. screenlog.0 is generated automatically
         
         
4.   Set-up Directory Structure for cpu’s/vioc’s under $IOC
   1. Generate cpu-##-## directory
      1. Generate a symbolic link named “startup.cmd” that points to “../skel/startup_cpu.cmd”
      2. Generate a “kernel-modules.cmd” file that is specific for your cpu
      3.  Create a symbolic link for each vioc(s) hosted on the cpu (ln -s ../vioc-xx##-xx## vioc-xx##-xx##)
         
         
   2.  Generate a vioc-##-## directory for each vioc running on this machine
      1.  Generate a “screenrc” file that is name-specific for each vioc
      2. Generate  Generate a symbolic link named “startup.cmd” that points to “../skel/startup_vioc.cmd”
      3.  Generate a symbolic link called “iocSpecificRelease” that follows the CRAM convention for pointing to an Epics application
         How to CRAM your Epics Application:
         
         

5. Update $IOC/All/Dev screeniocs

   1. Update information pertaining to which vioc’s are running on a cpu and currently the application each vioc is running

   2. Commit screeniocs back into CVS

...

• ctrl a d : detach from the screen session
• ctrl a { : scroll up through the start-up messages.
• View all vioc's on host cpu: screen -ls
• Attach to vioc: screen -r <vioc_name>
• Attaching to a linuxRT screen session multiple times with  "laci"  concurrently:
  screen  -x <vioc_name>
  

• Note: The "screen" program supports multi-display mode. When you attach an existing screen session, you can use "-x". It allow allows an user to attach to "a not detached screen session." like the The -r option allows a user to attach to a "detached screen session".

  
  
  

Common Linux Commands Used

...