The Fake-Busy and True-Idle Problems of Running Graph Applications on Chiplet-Based Multi-Cores
In 2025 IEEE International Symposium on Workload Characterization (IISWC), 2025
Running graph applications on chiplet-based multicores exposes execution phenomena that do not appear on a monolithic die. We characterize two of them: the Fake-Busy problem—cores that appear busy but are in fact stalled on cross-chiplet communication—and the True-Idle problem, where cores sit idle waiting on remote data.
By connecting application-level behavior to architectural and communication-level bottlenecks, the work pinpoints regimes in which classical, monolithic-era architectural assumptions no longer hold for chiplet systems, motivating packaging-aware modeling and design.
Recommended citation: R. Aligholipour and Yuan Yao, "The Fake-Busy and True-Idle Problems of Running Graph Applications on Chiplet-Based Multi-Cores," 2025 IEEE International Symposium on Workload Characterization (IISWC), Irvine, USA, 2025.
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