When I start up my Erlang emulator, there the first bit has a bunch of informational things. (Slightly reformatted for effect.) 

manoa:~ stu$ erl
Erlang (BEAM) emulator version 5.6.5 
[source] [smp:2] [async-threads:0] [hipe] [kernel-poll:false]

Eshell V5.6.5 (abort with ^G)
1>

Some of it I can guess at, probably accurate, but some of it means 'here be magic'.

  • Erlang (BEAM) emulator version 5.6.5: the version, of course
  • [source]: the emulator was compiled from source?
  • [smp:2]: two CPU cores detected and available
  • [async-threads:0]: currently running jobs?
  • [hipe]: ?
  • [kernel-poll:false]: ?

I also wonder if there are other [foo] items that may pop up with different configurations, builds or start up parameters.

So, what do the Erlang emulator info statements mean?

erlang emulation erl
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