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UID:submissions.supercomputing.org_SC23_sess308_spostg126@linklings.com
SUMMARY:File Aggregation for Asynchronous Multi-Level Checkpointing
DESCRIPTION:Mikaila J. Gossman (Clemson University)\n\nCheckpointing serve
 s numerous functionalities in modern-day HPC systems and applications. In 
 recent years, synchronous checkpointing, which blocks the application unti
 l checkpoints are persisted to external storage, suffers rising synchroniz
 ation overheads at scale, resulting in little forward progress by the appl
 ication. Therefore, asynchronous checkpointing has become more popular by 
 quickly capturing checkpoints locally and flushing them in the background 
 concurrently alongside the application. State-of-the-art solutions like VE
 LOC utilize a file-per-process strategy, which is difficult for users and 
 parallel file systems to manage. We implement a tunable N-to-M aggregation
  strategy within VELOC, obtaining 2.5x greater throughput than state-of-th
 e-art aggregation library ADIOS2 and 1.5x higher throughput than the naive
  N-to-1 aggregation currently supported by VELOC.\n\nRegistration Category
 : Tech Program Reg Pass\n\nSession Chair: Ana Gainaru (Oak Ridge National 
 Laboratory (ORNL))\n\n
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