Zvi, You want: 1> erlang:system_info(schedulers). 2 -Vance ~/lib/kernel-2.12/doc/html/erlang.html#system_info_schedulers On Sat, Mar 29, 2008 at 01:28:56PM -0700, Zvi wrote: } I mean programatically, i.e. is there is some function in stdlib or kernel } applications, which returns values of "erl +S" flag?