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wordcount

Counting words in different programming languages.

See the article on this project: http://juditacs.github.io/2015/11/26/wordcount.html

or the follow-up article: http://juditacs.github.io/2016/03/19/wordcount2.html

Leaderboard

Full Hungarian Wikipedia

Updated: June 13, 2016

Only the ones that finish are listed. The rest run out of memory.

Rank	Experiment	CPU seconds	User time	Maximum memory	Contributor
1	java -Xms2G -Xmx8G -classpath java:java/zah-0.6.jar WordCountOptimized	140.64	191.44	4232308
2	java -Xms2G -Xmx8G -classpath java:java/trove-3.0.3.jar WordCountOptimized	183.17	219.39	4391804
3	rust/wordcount/wordcount	208.86	193.34	6966228	Joshua Holmer
4	cpp/wordcount_clang	224.23	211.76	4933968
5	cpp/wordcount	227.74	213.86	4934204	Dmitry Andreev, Matias Fontanini, Judit Acs
6	c/wordcount	270.15	255.95	2453228	gaebor
7	php7.0 php/wordcount.php	285.01	267.78	4174284	Andrey Bukatov, Braun Patrik
8	d/wordcount	297.95	285.76	6363420	Pavel Chebotarev
9	hhvm php/wordcount.php	315.48	294.06	5076280	Andrey Bukatov, Braun Patrik
10	java -Xms2G -Xmx8G -classpath java WordCountBaseline	378.77	577.71	7036308
11	python/wordcount_py2.py	403.6	389.15	3943716	Judit Acs
12	go/bin/wordcount	410.81	418.64	5274756	David Siklosi
13	scala -J-Xms2G -J-Xmx8g -classpath scala Wordcount	546.28	710.57	7075976
14	mono csharp/WordCount.exe	610.95	588.56	4517848	Joe Amenta, Tim Posey, Peter Szel
15	python/wordcount_py2_baseline.py	627.22	606.13	8920684	Judit Acs
16	php5.6 php/wordcount.php	671.8	646.55	12745360	Andrey Bukatov, Braun Patrik
17	perl/wordcount.pl	942.27	915.93	7206948	Larion Garaczi, Judit Acs
18	cpp/wordcount_baseline	1094.24	990.64	6043624	Judit Acs
19	python/wordcount_py3.py	1192.51	1162.29	7771396	Judit Acs
20	lua lua/wordcount.lua	1344.87	1219.83	7255316	daurnimator
21	julia julia/wordcount.jl	1828.39	1789.74	7457092	Attila Zseder, getzdan
22	elixir/wordcount	2326.65	2290.94	12542340	Norbert Melzer
23	bash/wordcount.sh	2561.07	2643.59	13728	Judit Acs

5 million lines from the Hungarian Wikipedia

Updated: April 16, 2016

Rank	Experiment	CPU seconds	User time	Maximum memory	Contributor
1	rust/wordcount/wordcount	21.23	20.28	990008	Joshua Holmer
2	java -Xmx6G -classpath java:java/trove-3.0.3.jar WordCountOptimized	29.76	34.41	962244	Sam Van Oort
3	d/wordcount	29.79	28.97	752676	Pavel Chebotarev
4	cpp/wordcount	33.58	32.51	758728	Dmitry Andreev, Matias Fontanini, Judit Acs
5	cpp/wordcount_clang	33.84	32.95	758724
6	go/bin/wordcount	38.84	37.86	859284	David Siklosi
7	python/wordcount_py2.py	38.89	37.98	595500	Gabor Szabo
8	c/wordcount	39.64	38.49	427180	gaebor
9	php7.0 php/wordcount.php	41.11	27.13	709756	Andrey Bukatov, Braun Patrik
10	mono csharp/WordCount.exe	48.18	46.37	836040	Joe Amenta, Tim Posey, Peter Szel
11	hhvm php/wordcount.php	51.19	31.72	882584	Andrey Bukatov, Braun Patrik
12	python/wordcount_py2_baseline.py	64.56	63.02	1438388	Judit Acs
13	php5.6 php/wordcount.php	82.56	66.12	2113976	Andrey Bukatov, Braun Patrik
14	java -Xmx6G -classpath java WordCountBaseline	89.12	111.27	1602580	Sam Van Oort, Rick Hendricksen, Dávid Márk Nemeskey
15	python/wordcount_py3.py	98.33	96.62	1246564	Judit Acs
16	perl/wordcount.pl	113.04	110.78	1242056	Larion Garaczi, Judit Acs
17	lua lua/wordcount.lua	132.04	116.02	1210248	daurnimator
18	ruby2.3 ruby/wordcount.rb	137.09	131.31	3847648	Joshua Holmer
19	java -classpath java WordCount	143.01	128.67	1828536
20	julia julia/wordcount.jl	152.88	146.15	2490572	Attila Zseder, getzdan
21	scala -J-Xmx2g -classpath scala Wordcount	174.09	221.95	1457272	Hans van den Bogert
22	elixir/wordcount	184.63	181.5	2590384	Norbert Melzer
23	bash/wordcount.sh	276.14	290.33	13608	Judit Acs
24	haskell/WordCount	295.73	286.33	4216656	Larion Garaczi
25	cpp/wordcount_baseline	354.01	338.81	983292	Judit Acs
26	java -cp clojure.jar clojure.main clojure/wordcount.clj	357.75	379.64	2158764	lverweijen
27	elixir elixir/wordcount.ex	417.88	407.45	2545708
28	nodejs javascript/wordcount.js	578.55	577.19	972904	Laci Kundra
29	nodejs typescript/wordcount.js	628.72	604.63	920764	Braun Patrik

The task

The task is to split a text and count each word's frequency, then print the list sorted by frequency in decreasing order. Ties are printed in alphabetical order.

Rules

• the input is read from STDIN
• the input is always encoded in UTF-8
• output is printed to STDOUT
• break only on space, tab and newline (do not break on non-breaking space)
• do not write anything to STDERR
• the output is tab-separated
• sort by frequency AND secondary sort in alphabetical order
• try to write simple code with few dependencies
  • standard library
• single-thread is preferred but you can add multi-threaded or multicore versions too

The output should contain lines like this:

freqword <tab> freq

Example

$ echo "apple pear apple art" | python2 python/wordcount.py
apple   2
art     1
pear    1

Test corpus: Hungarian Wikisource and Wikipedia

scripts/create_input.sh downloads and unpacks the latest Hungarian Wikisource XML dump. Why Wikisource? It's not too small not too large and more importantly, it's valid utf8. Why Hungarian? There are many non-ascii characters and the number of different word types is high.

scripts/create_large_input.sh downloads and unpacks the latest Hungarian Wikipedia. This is the largest input used for comparison, see the first leaderboard.

Usage

To test on a small sample:

time cat data/huwikisource-latest-pages-meta-current.xml | head -10000 | python3 python/wordcount_py3.py > python_out

Installation with Docker

I strongly recommend building the Docker image instead of installing every package manually, but it's possible to install the dependencies manually. See the installation commands in Dockerfile.

Docker image

You can run the experiment in a Docker container.

Pull from DockerHub & tag it:

docker pull svanoort/allthelanguages:latest && docker tag svanoort/allthelanguages:latest allthelanguages

If you wish to build locally (this while take quite a while):

docker build -t allthelanguages --rm .

In either case, this requires quite a bit of storage, currently about 2.4 GB.

Run the image, mounting the local directory into the working directory of the docker file as a volume:

docker run -h DOCKER -it --rm -v $(pwd):/allthelanguages allthelanguages as_user.sh $(id -un) $(id -u) $(id -gn) $(id -g)

Changes you made in the folder will show up in the docker container, and any output (builds, results) will write to the folder as well. All permissions are maintained.

Note that if you're building node.js/typescript, it needs root (non-sudo) access so you'll need to do it this way, which creates files with root as the owner (you'll need to chown them):

docker run -h DOCKER -it --rm -v $(pwd):/allthelanguages allthelanguages

Downloading the dataset

bash scripts/create_input.sh

or the full dataset:

bash scripts/create_large_input.sh

Compile/build/whatever the wordcount scripts

bash scripts/build.sh

Run tests on one language

scripts/test.sh runs all tests for one language, well actually for a single command.

bash scripts/test.sh "python2 python/wordcount_py2.py"

Or

bash scripts/test.sh python/wordcount_py2.py

if the file is executable and has a valid shebang line.

The script either prints OK or the list of failed tests and a final FAIL.

Run tests on all languages

All commands are listed in the file run_commands.txt and the script scripts/test_all.sh runs test.sh with each command:

bash scripts/test_all.sh

Run the actual experiment on a larger dataset

If all tests are passed, the scripts work reasonably well. This does not mean that all output will be the same, see the full test later. For now, we consider them good enough for testing.

This command will run each test twice and append the results to results.txt. It's possible to add a comment at the end of each line.

bash scripts/compare.sh data/huwikisource-latest-pages-meta-current.xml 2 "full huwikisource"

Or test it on a part of huwikisource:

bash scripts/compare.sh <( head -10000 data/huwikisource-latest-pages-meta-current.xml) 1

Results.txt in a tab separated file that can be formatted to a Markdown table with this command:

cat results.txt | python2 scripts/evaluate_results.py

This scripts prints the fastest run for each command in a markup table like this:

Rank	Experiment	CPU seconds	User time	Maximum memory	Contributor
1	rust/wordcount/wordcount	20.57	19.79	990008	Joshua Holmer
2	cpp/wc_vector	33.3	31.93	775952	Matias Fontanini, Judit Acs
3	python/wordcount_py2gabor.py	40.13	38.71	594800	Gabor Szabo

Adding a new program

Adding a new programming language or a new version for an existing programming language consists of the following steps:

1. Add dependencies to the Dockerfile. Basically add the package to the existing apt-get package list.
2. If it needs compiling or any other setup method, add it to scripts/build.sh
3. Add the actual invoke command to run_commands.txt
4. If your executable differs from the source file, add the executable - source code mapping to binary_mapping.txt. This is used by scripts/evaluate_results.py for finding out the contributors of each program. The file is tab-separated.

Adding your program to this experiment

1. Make sure all dependencies are installed via standard packages and your code compiles.
2. Your code passes all the tests.
3. Make sure it runs for less than two minutes for 100,000 lines of text. If it is slower, it doesn't make much sense to add it.