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DTSTART:19700308T020000
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DTSTAMP:20260522T150121Z
LOCATION:C140/142
DTSTART;TZID=America/Chicago:20181113T160000
DTEND;TZID=America/Chicago:20181113T163000
UID:submissions.supercomputing.org_SC18_sess182_pap541@linklings.com
SUMMARY:Evaluation of an Interference-Free Node Allocation Policy on Fat-T
 ree Clusters
DESCRIPTION:Samuel D. Pollard (University of Oregon) and Nikhil Jain, Step
 hen Herbein, and Abhinav Bhatele (Lawrence Livermore National Laboratory)\
 n\nInterference between jobs competing for network bandwidth on a fat-tree
  cluster can cause significant variability and degradation in performance.
  These performance issues can be mitigated or completely eliminated if the
  resource allocation policy takes the network topology into account when a
 llocating nodes to jobs. We implement a fat-tree network topology aware no
 de allocation policy that allocates isolated partitions to jobs in order t
 o eliminate inter-job interference. We compare the impact of this node all
 ocation policy to a topology-oblivious policy with respect to the executio
 n time of individual jobs with different communication patterns. We also e
 valuate the cluster's quality of service using metrics such as system util
 ization, schedule makespan, and job wait time for both policies. The resul
 ts obtained for production workloads indicate that a topology-aware node a
 llocation can provide interference-free execution without negatively impac
 ting the cluster's quality of service.\n\nTag: Networks, Resource Manageme
 nt, Scheduling, State of the Practice, System Software\n\nRegistration Cat
 egory: Tech Program Reg Pass\n\nFinalist: BSP Finalist\n\nSession Chair: B
 ronis R. de Supinski (Lawrence Livermore National Laboratory (LLNL), Queen
 s University Belfast (QUB))\n\n
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