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https://issues.apache.org/jira/browse/RNG-57?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16689582#comment-16689582
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Alex D Herbert commented on RNG-57:
-----------------------------------
bq. Could the "shade" plugin config be shared for making it easy to run all the
examples that contain a main method
I'm not sure. I just wanted to get it to work within my local branch so Maven
collected the dependencies from the local repo (i.e. ran my new code). I'm not
sure if the final shaded jar can be the final output artifact that can be
pushed up to Maven central. It contains all the dependencies and Maven central
may want them to have signed source files. Maybe it can be pushed as a binary
artifact. I'm not familiar with distributed binaries.
bq. Do you have a big cluster?
Yes. But it's probably not necessary. I'd have to get DieHarder and testu01
installed as loadable modules on the cluster. 2000 minutes is 33.3 hours. I can
run the tests over the weekend on an old workstation with 12 cores.
I only have 4 {{LongProvider}}s to test. The {{IntProvider}}s have only changed
{{nextBoolean}} and this is not tested. So 12 cores may be enough for 3 repeats
of each test suite.
> CachedUniformRandomProvider for nextBoolean() and nextInt()
> -----------------------------------------------------------
>
> Key: RNG-57
> URL: https://issues.apache.org/jira/browse/RNG-57
> Project: Commons RNG
> Issue Type: Improvement
> Components: core
> Reporter: Alex D Herbert
> Priority: Minor
> Labels: performance
> Fix For: 1.2
>
>
> Implement a wrapper around a {{UniformRandomProvider}} that can cache the
> underlying source of random bytes for use in the methods {{nextBoolean()}}
> and {{nextInt()}} (in the case of {{LongProvider}}). E.g.
> {code:java}
> LongProvider provider = RandomSource.create(RandomSource.SPLIT_MIX_64);
> CachedLongProvider rng = new CachedLongProvider(provider);
> // Uses cached nextLong() 64 times
> rng.nextBoolean();
> // Uses cached nextLong() twice
> rng.nextInt();
> IntProvider provider = RandomSource.create(RandomSource.KISS);
> CachedIntProvider rng2 = new CachedIntProvider(provider);
> // Uses cached nextInt() 32 times
> rng2.nextBoolean();
> // This could be wrapped by a factory method:
> UniformRandomProvider rng = CachedUniformRandomProviderFactory.wrap(
> // Any supported source: IntProvider or LongProvider
> RandomSource.create(RandomSource...));
> {code}
> The implementation should be speed tested to determine the benefit for
> {{nextBoolean()}} and if {{nextInt()}} can be improved for {{LongProviders}}.
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