A Note on Correctly Gathering Results from JR's Concurrent Invocation Statement

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Ronald A. Olsson

Abstract


JRs concurrent invocation statement (CoStmt, for short) provides a form of collective communication. The thread executing a CoStmt can gather results from each of many invocations. This paper presents a problem that arises in using Java List structures in gathering such results. It presents incorrect and correct attempts at solutions and discusses the tradeoffs, including performance, among the correct solutions.

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