HW2: all done including bonus
This commit is contained in:
Claudio Maggioni
parent
171a7aa764
commit
ffd8fbf895
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|
||||
<window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
|
||||
<window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
|
||||
<window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
|
||||
</layout>
|
||||
</component>
|
||||
<component name="TypeScriptGeneratedFilesManager">
|
||||
<option name="version" value="1" />
|
||||
</component>
|
||||
<component name="editorHistoryManager">
|
||||
<entry file="file://$PROJECT_DIR$/src/parallel/ThreadPoolPrimeCounter.java">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
||||
<state relative-caret-position="240">
|
||||
<caret line="22" column="24" selection-start-line="22" selection-start-column="24" selection-end-line="22" selection-end-column="24" />
|
||||
</state>
|
||||
</provider>
|
||||
</entry>
|
||||
<entry file="file://$PROJECT_DIR$/src/parallel/CallablePrimeCounter.java">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
||||
<state relative-caret-position="255">
|
||||
<caret line="24" column="15" lean-forward="true" selection-start-line="24" selection-start-column="15" selection-end-line="24" selection-end-column="15" />
|
||||
</state>
|
||||
</provider>
|
||||
</entry>
|
||||
<entry file="file://$PROJECT_DIR$/src/sequential/SequentialPrimeCounter.java">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
||||
<state relative-caret-position="60">
|
||||
<caret line="5" column="13" selection-start-line="5" selection-start-column="13" selection-end-line="5" selection-end-column="13" />
|
||||
</state>
|
||||
</provider>
|
||||
</entry>
|
||||
<entry file="file://$PROJECT_DIR$/src/parallel/ForkJoinPoolPrimeCounter.java">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
||||
<state relative-caret-position="165">
|
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<caret line="17" column="40" selection-start-line="17" selection-start-column="40" selection-end-line="17" selection-end-column="40" />
|
||||
</state>
|
||||
</provider>
|
||||
</entry>
|
||||
<entry file="file://$PROJECT_DIR$/src/parallel/StreamsPrimeCounter.java">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
||||
<state relative-caret-position="105">
|
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<caret line="7" column="20" selection-start-line="7" selection-start-column="20" selection-end-line="7" selection-end-column="20" />
|
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|
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<element signature="imports" expanded="true" />
|
||||
</folding>
|
||||
</state>
|
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</provider>
|
||||
</entry>
|
||||
<entry file="file://$PROJECT_DIR$/src/test/Tester.java">
|
||||
<provider selected="true" editor-type-id="text-editor">
|
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<state relative-caret-position="370">
|
||||
<caret line="68" lean-forward="true" selection-start-line="68" selection-end-line="68" />
|
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</state>
|
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</entry>
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|
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<component name="masterDetails">
|
||||
<states>
|
||||
<state key="ArtifactsStructureConfigurable.UI">
|
||||
<settings>
|
||||
<artifact-editor />
|
||||
<splitter-proportions>
|
||||
<option name="proportions">
|
||||
<list>
|
||||
<option value="0.2" />
|
||||
</list>
|
||||
</option>
|
||||
</splitter-proportions>
|
||||
</settings>
|
||||
</state>
|
||||
<state key="FacetStructureConfigurable.UI">
|
||||
<settings>
|
||||
<last-edited>No facets are configured</last-edited>
|
||||
<splitter-proportions>
|
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<option name="proportions">
|
||||
<list>
|
||||
<option value="0.2" />
|
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</list>
|
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</option>
|
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</splitter-proportions>
|
||||
</settings>
|
||||
</state>
|
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<state key="GlobalLibrariesConfigurable.UI">
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||||
<settings>
|
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<splitter-proportions>
|
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<option name="proportions">
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||||
<list>
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<option value="0.2" />
|
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</list>
|
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</option>
|
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</splitter-proportions>
|
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</settings>
|
||||
</state>
|
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<state key="JdkListConfigurable.UI">
|
||||
<settings>
|
||||
<splitter-proportions>
|
||||
<option name="proportions">
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||||
<list>
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||||
<option value="0.2" />
|
||||
</list>
|
||||
</option>
|
||||
</splitter-proportions>
|
||||
</settings>
|
||||
</state>
|
||||
<state key="ModuleStructureConfigurable.UI">
|
||||
<settings>
|
||||
<last-edited>Ex3</last-edited>
|
||||
<splitter-proportions>
|
||||
<option name="proportions">
|
||||
<list>
|
||||
<option value="0.2" />
|
||||
<option value="0.6" />
|
||||
</list>
|
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</option>
|
||||
</splitter-proportions>
|
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</settings>
|
||||
</state>
|
||||
<state key="ProjectLibrariesConfigurable.UI">
|
||||
<settings>
|
||||
<splitter-proportions>
|
||||
<option name="proportions">
|
||||
<list>
|
||||
<option value="0.2" />
|
||||
</list>
|
||||
</option>
|
||||
</splitter-proportions>
|
||||
</settings>
|
||||
</state>
|
||||
</states>
|
||||
</component>
|
||||
</project>
|
||||
|
|
@ -4,6 +4,7 @@ import util.Prime;
|
|||
import util.PrimeCounter;
|
||||
import java.util.concurrent.ForkJoinPool;
|
||||
import java.util.concurrent.RecursiveTask;
|
||||
import java.util.concurrent.ThreadPoolExecutor;
|
||||
|
||||
public class ForkJoinPoolPrimeCounter implements PrimeCounter {
|
||||
|
||||
|
|
@ -15,10 +16,8 @@ public class ForkJoinPoolPrimeCounter implements PrimeCounter {
|
|||
}
|
||||
|
||||
public int countPrimes(int[] nums) {
|
||||
int count = 0;
|
||||
// TODO: Complete method countPrimes
|
||||
|
||||
return count;
|
||||
final ForkJoinPool p = new ForkJoinPool();
|
||||
return p.invoke(new CountPrimes(nums, 0, nums.length - 1));
|
||||
}
|
||||
|
||||
private static class CountPrimes extends RecursiveTask<Integer> {
|
||||
|
|
@ -47,15 +46,14 @@ public class ForkJoinPoolPrimeCounter implements PrimeCounter {
|
|||
return count;
|
||||
}
|
||||
else {
|
||||
int right, left, rightAns, leftAns;
|
||||
right = left = rightAns = leftAns = 0;
|
||||
right = low + ((int) Math.floor((high - low) / 2 ) - 1);
|
||||
left = low + ((int) Math.ceil((high - low) / 2 ));
|
||||
// TODO: Complete method compute
|
||||
final int mid = low + (high - low) / 2;
|
||||
|
||||
final CountPrimes leftTask = new CountPrimes(nums, low, mid);
|
||||
final CountPrimes rightTask = new CountPrimes(nums, mid + 1, high);
|
||||
|
||||
|
||||
return leftAns + rightAns;
|
||||
rightTask.fork();
|
||||
|
||||
return leftTask.compute() + rightTask.join();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,14 @@
|
|||
package parallel;
|
||||
|
||||
import util.Prime;
|
||||
import util.PrimeCounter;
|
||||
|
||||
import java.util.Arrays;
|
||||
|
||||
public class StreamsPrimeCounter implements PrimeCounter {
|
||||
|
||||
@Override
|
||||
public int countPrimes(int[] nums) throws Exception {
|
||||
return Arrays.stream(nums).parallel().map(n -> Prime.isPrime(n) ? 1 : 0).sum();
|
||||
}
|
||||
}
|
||||
|
|
@ -4,11 +4,7 @@ import util.Prime;
|
|||
import java.util.List;
|
||||
import util.PrimeCounter;
|
||||
import java.util.ArrayList;
|
||||
import java.util.concurrent.Future;
|
||||
import java.util.concurrent.TimeUnit;
|
||||
import java.util.concurrent.Callable;
|
||||
import java.util.concurrent.Executors;
|
||||
import java.util.concurrent.ExecutorService;
|
||||
import java.util.concurrent.*;
|
||||
|
||||
public class ThreadPoolPrimeCounter implements PrimeCounter {
|
||||
|
||||
|
|
@ -19,9 +15,20 @@ public class ThreadPoolPrimeCounter implements PrimeCounter {
|
|||
}
|
||||
|
||||
public int countPrimes(int[] nums) throws Exception {
|
||||
int count = 0;
|
||||
// TODO: Complete method countPrimes
|
||||
final ExecutorService e = Executors.newFixedThreadPool(numThreads);
|
||||
final int step = (int) Math.ceil((double) nums.length / numThreads);
|
||||
final List<Future<Integer>> results = new ArrayList<>(numThreads);
|
||||
|
||||
for (int i = 0; i < nums.length; i += step) {
|
||||
results.add(e.submit(new CountPrimes(nums, i, i + step)));
|
||||
}
|
||||
|
||||
e.shutdown();
|
||||
|
||||
int count = 0;
|
||||
for (Future<Integer> result : results) {
|
||||
count += result.get();
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,10 @@
|
|||
package test;
|
||||
|
||||
import parallel.StreamsPrimeCounter;
|
||||
import util.PrimeCounter;
|
||||
|
||||
import java.util.HashMap;
|
||||
import java.util.Map;
|
||||
import java.util.stream.IntStream;
|
||||
import parallel.CallablePrimeCounter;
|
||||
import parallel.ThreadPoolPrimeCounter;
|
||||
|
|
@ -13,22 +17,26 @@ public class Tester {
|
|||
public static final int LOW = 2;
|
||||
public static final int HIGH = 11201609;
|
||||
private PrimeCounter strategy;
|
||||
private static Map<int[], Long> checkMap = new HashMap<>();
|
||||
|
||||
private void setStrategy(PrimeCounter strategy) {
|
||||
this.strategy = strategy;
|
||||
}
|
||||
|
||||
private int countPrimes(int[] array) {
|
||||
private long countPrimes(int[] array) {
|
||||
return new SequentialPrimeCounter().countPrimes(array);
|
||||
}
|
||||
|
||||
private void testImplementation(int[] array, String name)
|
||||
throws Exception {
|
||||
|
||||
checkMap.computeIfAbsent(array, k -> countPrimes(array));
|
||||
long result = checkMap.get(array);
|
||||
|
||||
long startTime = System.nanoTime();
|
||||
int count = strategy.countPrimes(array);
|
||||
long endTime = System.nanoTime();
|
||||
long result = countPrimes(array);
|
||||
|
||||
if (count != result) {
|
||||
// Informing if the implementation failed
|
||||
System.err.printf("- ERROR: %s; Expected: %d; Found: %d\n",
|
||||
|
|
@ -55,8 +63,6 @@ public class Tester {
|
|||
tester.setStrategy(new CallablePrimeCounter(NUM_THREADS));
|
||||
tester.testImplementation(numbers, "Parallel - Callable version");
|
||||
|
||||
// TODO: Uncomment to test additional implementations
|
||||
/*
|
||||
// Parallel - ThreadPool implementation
|
||||
tester.setStrategy(new ThreadPoolPrimeCounter(NUM_THREADS));
|
||||
tester.testImplementation(numbers, "Parallel - ThreadPool version");
|
||||
|
|
@ -66,8 +72,7 @@ public class Tester {
|
|||
tester.testImplementation(numbers, "Parallel - ForkJoinPool version");
|
||||
|
||||
// Parallel - Streams implementation - BONUS
|
||||
//tester.setStrategy(new StreamsPrimeCounter());
|
||||
//tester.testImplementation(numbers, "Parallel - Streams version");
|
||||
*/
|
||||
tester.setStrategy(new StreamsPrimeCounter());
|
||||
tester.testImplementation(numbers, "Parallel - Streams version");
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Reference in New Issue