Concurrent programs with many replicated threads, e.g., running {HEAD ~ the same piece} of {TAIL ~ code}, occur in many important applications 
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Concurrent programs with many replicated threads , e.g. , running { HEAD ~ the same piece } of { TAIL ~ code } , occur in many important applications
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH