performance measurements
Each table row shows performance measurements for this Erlang HiPE program with a particular command-line input value N.
| N | CPU secs | Elapsed secs | Memory KB | Code B | ≈ CPU Load |
|---|
Read the ↓ make, command line, and program output logs to see how this program was run.
Read chameneos-redux benchmark to see what this program should do.
chameneos-redux Erlang HiPE program source code
%%% The Computer Language Benchmarks Game %%% http://shootout.alioth.debian.org/ %%% contributed by Christian von Roques %%% modified by Jiri Isa %% Each chameneos is its own process. %% A chameneos sends {self(), Color} to the broker to request a %% meeting with another chameneos. %% The broker replies with {Pid, Color} of the partner met or 'stop' %% whereupon the chameneos prints the Meetings and Selfmeetings it had %% and replies with the number of Meetings for the broker to sum. -module(chameneosredux). -export([main/1]). -import(lists, [foreach/2]). spell(0) -> " zero"; spell(N) -> spell(N, []). spell(0, L) -> L; spell(N, L) -> spell(N div 10, [element(N rem 10 + 1, {" zero", " one", " two", " three", " four", " five", " six", " seven", " eight", " nine"}) | L]). complement(C, C) -> C; complement(blue, red) -> yellow; complement(blue, yellow) -> red; complement(red, blue) -> yellow; complement(red, yellow) -> blue; complement(yellow, blue) -> red; complement(yellow, red) -> blue. show_complements() -> [ io:fwrite("~p + ~p -> ~p~n", [A, B, complement(A, B)]) || A <- [blue, red, yellow], B <- [blue, red, yellow]]. print_header(L) -> io:fwrite("~n"), foreach(fun(C) -> io:fwrite(" ~p", [C]) end, L), io:fwrite("~n"). run(L, N) -> print_header(L), Broker = self(), foreach(fun(Color) -> spawn(fun() -> chameneos(Broker, Color, 0, 0) end) end, L), broker(N), cleanup(length(L), 0). chameneos(Broker, Color, Meetings, MetSelf) -> Broker ! { self(), Color }, receive {OPid, OColor} -> chameneos(Broker, complement(Color, OColor), Meetings+1, if OPid == self() -> MetSelf+1; true -> MetSelf end); stop -> io:fwrite("~w~s\n", [Meetings, spell(MetSelf)]), Broker ! Meetings end. broker(0) -> nil; broker(N) -> receive C1 = {Pid1, _} -> nil end, receive C2 = {Pid2, _} -> Pid1 ! C2, Pid2 ! C1, broker(N-1) end. cleanup(0, M) -> io:fwrite("~s~n", [spell(M)]); cleanup(N, M) -> receive {Pid, _Color} -> Pid ! stop, cleanup(N, M); Meetings -> cleanup(N-1, M+Meetings) end. main([Arg]) -> N = list_to_integer(Arg), show_complements(), run([blue, red, yellow], N), run([blue, red, yellow, red, yellow, blue, red, yellow, red, blue], N), io:fwrite("~n"), halt(0).
notes
make, command-line, and program output logs
Fri, 24 Apr 2009 21:42:05 GMT
MAKE:
mv chameneosredux.hipe chameneosredux.erl
/usr/local/bin/erlc +native +"{hipe, [o3]}" chameneosredux.erl
rm chameneosredux.erl
0.76s to complete and log all make actions
COMMAND LINE:
/usr/local/bin/erl -smp enable -noshell -run chameneosredux main 6000000
PROGRAM OUTPUT:
blue + blue -> blue
blue + red -> yellow
blue + yellow -> red
red + blue -> yellow
red + red -> red
red + yellow -> blue
yellow + blue -> red
yellow + red -> blue
yellow + yellow -> yellow
blue red yellow
3936682 zero
4046655 zero
4016663 zero
one two zero zero zero zero zero zero
blue red yellow red yellow blue red yellow red blue
1199947 zero
1197586 zero
1195243 zero
1208602 zero
1198361 zero
1200835 zero
1203603 zero
1197184 zero
1197644 zero
1200995 zero
one two zero zero zero zero zero zero