public static List<List<Integer>> copyArrayOfArrays(List<List<Integer>> myArrays) {
List<List<Integer>> copyArrays = new ArrayList<>();
List<Integer> myArray;
for (int i = 0; i < myArrays.size(); i++) {
myArray = Utility.copyArray(myArrays.get(i));
copyArrays.add(myArray);
}
return copyArrays;
}
public static void main(String[] args) {
int cores = Runtime.getRuntime().availableProcessors();
System.out.println("The number of cores is: " + cores);
System.out.println(System.getenv("PROCESSOR_IDENTIFIER"));
System.out.println(System.getenv("PROCESSOR_ARCHITECTURE"));
System.out.println(System.getenv("PROCESSOR_ARCHITEW6432"));
System.out.println(System.getenv("NUMBER_OF_PROCESSORS"));
System.out.println("Free memory (bytes): " + Runtime.getRuntime().freeMemory());
System.out.println("Total memory (bytes): " + Runtime.getRuntime().totalMemory());
// App app = new App();
List<Integer> sortArrayMerge = new ArrayList<>();
Utility.populateArray(sortArrayMerge);
List<Integer> sortArrayMergeParallel = Utility.copyArray(sortArrayMerge);
List<Integer> sortArrayMergeParallelWO = Utility.copyArray(sortArrayMerge);
List<Integer> sortArrayMergeParallelOptimized = Utility.copyArray(sortArrayMerge);
// Utility.printArray(sortArray);
// Utility.printArray(sortArrayCopy);
long startParallelMergeWO = System.currentTimeMillis();
MultithreadedSort.runParallelMerge(
sortArrayMergeParallelWO, cores, MultithreadedSort.MERGE_SORT_WO_SENTINEL);
long endParrallelMergeWO = System.currentTimeMillis();
long startParallelMerge = System.currentTimeMillis();
// MultithreadedSort.runParallelMerge(sortArrayMergeParallel, cores,
// MultithreadedSort.MERGE_SORT);
long endParrallelMerge = System.currentTimeMillis();
long startParallelMergeOptimized = System.currentTimeMillis();
// MultithreadedSort.runParallelMerge(sortArrayMergeParallelOptimized, cores,
// MultithreadedSort.MERGE_SORT_OPTIMIZED);
long endParallelMergeOptimized = System.currentTimeMillis();
long startMerge = System.currentTimeMillis();
// Sort.mergeSort(sortArrayMerge, 0, sortArrayMerge.size() - 1);
long endMerge = System.currentTimeMillis();
// The search without sentinels seems to perform slightly faster with
// the ratio of times
// approaching to 1 as the size of array grows
System.out.println(
"Merge time paralle optimized is: "
+ (endParallelMergeOptimized - startParallelMergeOptimized)
+ "\nMerge time is: "
+ (endMerge - startMerge)
+ "\nParralel merge time WO is: "
+ (endParrallelMergeWO - startParallelMergeWO)
+ "\nParralel merge time is: "
+ (endParrallelMerge - startParallelMerge));
// Utility.printArray(sortArrayMerge);
// Utility.printArray(sortArrayMergeWO);
// Utility.printArray(sortArrayMergeParallelWO);
// Utility.printArray(sortArrayMergeParallel);
//
// //
}