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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 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 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
spectral-norm	±	±	±
n-body	±	±	±
binary-trees	±	±	1/2
fannkuch-redux	±	±	±
regex-dna	±	±	1/2
reverse-complement	2×	±	1/3
fasta-redux	2×	2×	±
mandelbrot	2×	±	±
fasta	2×	±	±
k-nucleotide	4×	±	1/2

Scala used what fraction? used how many times more?
Time-used	|-	|---	25%	median	75%	---|	-|
(Elapsed secs)	±	±	±	±	2×	3×	4×

± 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	3.58	2.98	52,424	1125	6% 12% 4% 99%
Java 7 -server	10.61	4.43	63,156	1826	71% 69% 52% 45%
spectral-norm
Scala	17.73	4.61	23,360	720	95% 96% 95% 99%
Java 7 -server	17.62	4.50	17,716	950	98% 99% 98% 98%
n-body
Scala	23.49	23.45	22,852	1358	0% 0% 0% 100%
Java 7 -server	22.52	22.50	16,920	1424	0% 100% 0% 0%
binary-trees
Scala	34.68	11.14	657,864	641	86% 79% 72% 77%
Java 7 -server	22.86	9.41	516,144	1007	83% 41% 64% 57%
fannkuch-redux
Scala	64.54	16.42	24,196	1017	99% 98% 99% 98%
Java 7 -server	53.19	13.47	17,416	1282	98% 100% 98% 100%
regex-dna
Scala	27.01	9.03	627,784	723	69% 72% 61% 98%
Java 7 -server	23.36	6.63	636,924	1410	92% 87% 88% 86%
reverse-complement
Scala	2.43	2.40	321,772	505	1% 3% 0% 98%
Java 7 -server	2.74	1.31	298,220	1661	45% 54% 37% 79%
fasta-redux
Scala	4.91	4.60	33,080	1372	1% 100% 4% 3%
Java 7 -server	2.56	2.51	17,304	1443	0% 100% 1% 1%
mandelbrot
Scala	46.81	11.93	72,616	796	98% 99% 98% 98%
Java 7 -server	23.97	6.10	69,360	796	98% 99% 98% 98%
fasta
Scala	10.41	10.25	27,208	1080	3% 1% 1% 100%
Java 7 -server	5.22	5.14	18,176	1507	0% 100% 1% 1%
k-nucleotide
Scala	112.97	30.44	490,308	1257	92% 92% 93% 95%
Java 7 -server	29.23	8.03	463,516	2431	90% 98% 89% 89%

 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 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) 64-Bit 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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