CkIO decouples file-reader tasks from application tasks in over-decomposed Charm++ programs, keeping input throughput stable as the number of client tasks grows and giving ChaNGa a 2x input speedup.
Automatically selecting the number of aggregators for collective i/o operations
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CkIO: Parallel File Input for Over-Decomposed Task-Based Systems
CkIO decouples file-reader tasks from application tasks in over-decomposed Charm++ programs, keeping input throughput stable as the number of client tasks grows and giving ChaNGa a 2x input speedup.