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Physical Sciences and Mathematics Commons™
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Full-Text Articles in Physical Sciences and Mathematics
Non-Blocking Concurrent Operations On Heap, Mahesh Acharya
Non-Blocking Concurrent Operations On Heap, Mahesh Acharya
UNLV Theses, Dissertations, Professional Papers, and Capstones
We present a non-blocking implementation for the concurrent Heap data structure in the asynchronous shared memory system. The system may be a traditional one with a single processor with multiple threads, or it may be the one with multiple processors each possibly with multiple threads. Our implementation supports readMin, deleteMin, and insert operations on the heap. The deleteMin and insert operations are non-blocking operations, whereas the readMin is wait-free. One easy approach of using a heap in multi-threading environment could be by locking the entire heap before performing any operation. This would make the implementation very slow to have any …
A Survey Of Classical And Recent Results In Bin Packing Problem, Yoga Jaideep Darapuneni
A Survey Of Classical And Recent Results In Bin Packing Problem, Yoga Jaideep Darapuneni
UNLV Theses, Dissertations, Professional Papers, and Capstones
In the classical bin packing problem one receives a sequence of n items 1, 2,..., n with sizes s1, s2, . . . ,sn where each item has a fixed size in (0, 1]. One needs to find a partition of the items into sets of size1, called bins, so that the number of sets in the partition is minimized and the sum of the sizes of the pieces assigned to any bin does not exceed its capacity. This combinatorial optimization problem which is NP hard has many variants as well as online and offline versions of the problem. Though …