x64 Ubuntu : Intel® Q6600® quad-core
Computer Language Benchmarks Game      [[ Play ]]

- all benchmarks - n-body fannkuch-redux meteor-contest fasta fasta-redux spectral-norm reverse-complement mandelbrot k-nucleotide regex-dna pidigits chameneos-redux thread-ring binary-trees-redux binary-trees - all languages - Ada 2005 GNAT ATS C gcc Clojure C# Mono C++ g++ Dart Erlang Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 2.0 Ruby JRuby Scala

÷ Ada 2005 GNAT ATS C gcc Clojure C# Mono C++ g++ Dart Erlang Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 2.0 Ruby JRuby Scala x86 one core x64 quad-core x86 quad-core x64 one core

 1 : Are the Scala programs faster? At a glance.

Each chart bar shows, for one unidentified benchmark, how much the fastest Scala program used compared to the fastest Java 7 program.

These are not the only compilers and interpreters. These are not the only programs that could be written. These are not the only tasks that could be solved. These are just 10 tiny examples.

 2 : Are the Scala programs faster? Approximately.

Each table row shows, for one named benchmark, how much the fastest Scala program used compared to the fastest Java 7 program.

Scala used what fraction? used how many times more?
Benchmark	Time	Memory	Code
k-nucleotide	1/2	1/2	±
pidigits †	±	±	1/2
spectral-norm	±	±	±
n-body	±	±	±
mandelbrot	±	3×	±
fannkuch-redux	±	±	±
reverse-complement	±	±	1/2
fasta	±	±	±
binary-trees	±	±	1/2
regex-dna	2×	±	±
fasta-redux	2×	2×	±

Scala used what fraction? used how many times more?
Time-used	|-	|---	25%	median	75%	---|	-|
(Elapsed secs)	1/2	1/2	±	±	±	2×	2×

† possible mismatch - one-core program compared to multi-core program.

± read the measurements and then read the program source code.

 3 : Are the Scala programs faster? Measurements.

These are not the only tasks that could be solved. These are just 10 tiny examples. These are not the only compilers and interpreters. These are not the only programs that could be written.

For each named benchmark, measurements of the fastest Scala program are shown for comparison against measurements of the fastest Java 7 program.

Program Source Code	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
k-nucleotide
Scala	23.86	8.31	215,304	2080	56% 79% 75% 77%
Java 7	46.39	13.25	450,972	1630	86% 84% 96% 85%
pidigits
Scala	3.56	2.98	52,776	1125	23% 11% 79% 7% †
Java 7	10.20	4.29	60,520	1808	68% 62% 65% 45% †
spectral-norm
Scala	17.75	4.63	23,308	720	95% 95% 95% 99%
Java 7	17.61	4.51	17,540	950	97% 97% 99% 98%
n-body
Scala	23.52	23.47	23,708	1358	1% 2% 1% 100%
Java 7	22.51	22.50	17,256	1424	0% 0% 100% 0%
mandelbrot
Scala	28.57	7.43	233,828	786	96% 96% 96% 98%
Java 7	27.82	7.07	69,460	796	99% 98% 99% 98%
fannkuch-redux
Scala	55.35	14.13	25,604	1017	98% 97% 99% 98%
Java 7	51.90	13.15	17,348	1282	99% 99% 98% 98%
reverse-complement
Scala	1.97	1.52	439,420	761	4% 3% 92% 35%
Java 7	2.79	1.31	298,404	1661	61% 77% 40% 39%
fasta
Scala	6.40	6.29	24,720	1053	0% 1% 1% 100%
Java 7	5.21	5.14	18,284	1507	0% 1% 1% 100%
binary-trees
Scala	16.37	12.46	477,616	494	12% 12% 11% 99%
Java 7	22.31	9.24	523,784	1007	37% 65% 58% 83%
regex-dna
Scala	34.01	15.48	980,808	668	39% 77% 61% 43%
Java 7	24.82	8.55	709,672	929	65% 82% 65% 79%
fasta-redux
Scala	5.00	4.70	33,916	1372	5% 1% 100% 2%
Java 7	2.56	2.52	17,308	1443	0% 1% 1% 100%

† possible mismatch - one-core program compared to multi-core program.

 4 : Are there other Scala programs for these benchmarks?

Remember - those are just the fastest Scala and Java 7 programs measured on this OS/machine. Check if there are other implementations of these benchmark programs for Scala.

Ada 2005 GNAT ATS C gcc Clojure C# Mono C++ g++ Dart Erlang Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 2.0 Ruby JRuby Scala

Maybe one of those other Scala programs is fastest on a different OS/machine.

 5 : Are there other faster programs for these benchmarks?

Remember - those are just the fastest Scala and Java 7 programs measured on this OS/machine. Check if there are faster implementations of these benchmark programs for other programming languages.

n-body fannkuch-redux meteor-contest fasta fasta-redux spectral-norm reverse-complement mandelbrot k-nucleotide regex-dna pidigits chameneos-redux thread-ring binary-trees-redux binary-trees

Maybe one of those other programs is fastest on a different OS/machine.

 Scala : higher-order type-safe programming for jvm 

java version "1.7.0_11"
Java(TM) SE Runtime Environment (build 1.7.0_11-b21)
Java HotSpot(TM) 64-Bit Server VM (build 23.6-b04, mixed mode)

Scala compiler version 2.10.0 -- Copyright 2002-2012, LAMP/EPFL

Online book: Programming in Scala pdf

A Scala Tutorial for Java programmers pdf

Home Page: http://scala.epfl.ch/

Download: http://scala.epfl.ch/downloads/index.html

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