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SCALO monitors co-executing applications at runtime to evaluate their scalability. Its optimizing thread allocator analyzes these scalability estimates to adapt the parallelism of each program. ... However, contention for shared resources can limit the improvement of concurrent application execution: orchestrating the number of threads used by each application and is essential. ... We present Scalability-Aware Parallelism Orchestration (SCALO), which overcomes many of the limitations of prior solutions for node sharing, and we demonstrate that it signi cantly improves throughput. ...doi:10.1145/3158643 fatcat:dh4dljqmg5fjlb73y6p4ouyh7m