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Computer Language Benchmarks Game      [[ Help ]]

- 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 - all languages - Ada 2005 GNAT ATS C GNU gcc Clojure C# Mono C++ GNU g++ Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 -server Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 1.9 Ruby JRuby Scala

÷ Ada 2005 GNAT ATS C GNU gcc Clojure C# Mono C++ GNU g++ Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 -server Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 1.9 Ruby JRuby Scala

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

This chart shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.

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

Look at speed another way - look at a box plot of Time-used data.

 Step 2 : Are the Scala programs faster? Approximately.

This table shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.

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

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

Scala used what fraction? used how many times more?
Time-used	|-	|---	25%	median	75%	---|	-|
(Elapsed secs)	±	±	±	±	2×	3×	3×

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

 Step 3 : Are the Scala programs faster? Measurements.

This table shows 5 measurements - CPU Time, Elapsed Time, Memory, Code and ≈ CPU Load ~ speed and size.

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

Program Source Code	CPU secs	Elapsed secs	Memory KB	Code B	≈ CPU Load
pidigits
Scala	4.44	3.91	43,780	1125	3% 5% 7% 100%
Java 7 -server	12.36	5.16	47,348	1826	60% 61% 61% 54%
regex-dna
Scala	28.62	9.60	598,932	723	64% 82% 61% 93%
Java 7 -server	28.92	10.07	708,180	929	65% 64% 83% 76%
n-body
Scala	23.96	23.92	18,032	1358	0% 0% 100% 0%
Java 7 -server	24.37	24.34	13,932	1424	0% 0% 0% 100%
fannkuch-redux
Scala	69.47	17.72	19,384	1017	99% 97% 99% 98%
Java 7 -server	67.73	17.13	14,208	1282	98% 99% 99% 100%
spectral-norm
Scala	16.69	4.36	18,572	720	95% 94% 99% 95%
Java 7 -server	16.38	4.21	14,556	950	97% 97% 99% 98%
binary-trees
Scala	34.67	11.20	648,920	641	87% 78% 68% 78%
Java 7 -server	23.89	9.78	532,932	1007	61% 77% 45% 63%
reverse-complement
Scala	2.46	2.41	404,620	505	1% 3% 99% 2%
Java 7 -server	2.88	1.52	294,656	1661	56% 74% 46% 16%
mandelbrot
Scala	46.61	11.91	67,336	796	97% 97% 99% 98%
Java 7 -server	27.15	6.89	67,832	796	98% 99% 99% 99%
fasta
Scala	10.14	9.95	21,592	1080	1% 0% 100% 1%
Java 7 -server	4.95	4.86	14,976	1507	1% 0% 100% 1%
fasta-redux
Scala	4.48	4.14	22,932	1372	2% 1% 6% 100%
Java 7 -server	1.89	1.84	14,420	1443	1% 2% 3% 100%
k-nucleotide
Scala	94.47	25.70	482,568	1257	92% 91% 95% 91%
Java 7 -server	34.65	9.39	381,176	2431	92% 89% 97% 92%

 Step 4 : Are there other Scala programs for these benchmarks?

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

Ada 2005 GNAT ATS C GNU gcc Clojure C# Mono C++ GNU g++ Erlang HiPE F# Mono Fortran Intel Go Haskell GHC Java 7 -server Lisp SBCL OCaml Pascal Free Pascal Perl PHP Python 3 Racket Ruby 1.9 Ruby JRuby Scala

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

 Step 5 : Are there other faster programs for these benchmarks?

Remember - those are just the fastest Scala and Java 7 -server 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

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_04"
Java(TM) SE Runtime Environment (build 1.7.0_04-b20)
Java HotSpot(TM) Server VM (build 23.0-b21, mixed mode)

Scala compiler version 2.9.2 -- Copyright 2002-2011, 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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