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From "Artem Barger (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (RNG-4) Add benchmark to compare performance of generating a sequence of number values.
Date Wed, 10 Aug 2016 11:57:20 GMT

    [ https://issues.apache.org/jira/browse/RNG-4?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15415161#comment-15415161
] 

Artem Barger edited comment on RNG-4 at 8/10/16 11:56 AM:
----------------------------------------------------------

Was toying w/ API's and created following benchmark as well:

{code:java}
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.rng;


import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;

import java.util.concurrent.TimeUnit;


/**
 * Benchmark which leverages Quasi Monte-Carlo method to numerically compute
 * integral sin(cos(x)) for interval [0..1].
 */
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@Warmup(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
@Fork(1)
@State(Scope.Benchmark)
public class QuasiMonteCarloIntegralTestPerformance extends AbstractTestPerformance {

    /**
     * Number of random values to generate.
     */
    @Param({"1000000"})
    long numPoints;

    @Benchmark
    public void integral(Sources sources, Blackhole bh) {
        double result = 0;
        for (int i = 0; i < numPoints; i++) {
            result += Math.sin(Math.cos(sources.provider.nextDouble()));
        }
        result /= numPoints;
        bh.consume(result);
    }

}

{code}

Uses quasi monte carlo method to numerically compute integral of sin(cos(x))dx in interval
[0..1].


was (Author: c0rwin):
Was toying w/ API's and created following benchmark as well:

{code:java}
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.rng;


import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;

import java.util.concurrent.TimeUnit;


/**
 * Benchmark which leverages Quasi Monte-Carlo method to numerically compute
 * integral sin(cos(x)) for interval [0..1].
 */
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@Warmup(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
@Measurement(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
@Fork(1)
@State(Scope.Benchmark)
public class QuasiMonteCarloIntegralTestPerformance extends AbstractTestPerformance {

    /**
     * Number of random values to generate.
     */
    @Param({"1000000"})
    long numPoints;

    @Benchmark
    public void integral(Sources sources, Blackhole bh) {
        double result = 0;
        for (int i = 0; i < numPoints; i++) {
            result += Math.sin(Math.cos(sources.provider.nextDouble()));
        }
        result /= numPoints;
        bh.consume(result);
    }

}

{code}

> Add benchmark to compare performance of generating a sequence of number values.
> -------------------------------------------------------------------------------
>
>                 Key: RNG-4
>                 URL: https://issues.apache.org/jira/browse/RNG-4
>             Project: Commons RNG
>          Issue Type: Bug
>            Reporter: Artem Barger
>         Attachments: RNG-4.patch, jmh-result.json
>
>
> There is a set on random source providers implemented in the project, here I'd like to
suggest creating a benchmark to actually provide such an experiment. 
> Once having such test everybody will be able to compare and pick more suitable for use
case.



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