Chris created MESOS-5342:
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Summary: CPU pinning/binding support for
CgroupsCpushareIsolatorProcess
Key: MESOS-5342
URL: https://issues.apache.org/jira/browse/MESOS-5342
Project: Mesos
Issue Type: Improvement
Components: cgroups, containerization
Affects Versions: 0.28.1
Reporter: Chris
The cgroups isolator currently lacks support for binding (also called pinning)
containers to a set of cores. The GNU/Linux kernel is known to make sub-optimal
core assignments for processes and threads. Poor assignments impact program
performance; particularly in the case of applications requiring GPU resources.
Most cluster management systems from the HPC community (SLURM) provide both
cgroup isolation and cpu binding. This feature would provide similar
capabilities. The current interest in supporting Intel's Cache Allocation
Technology will require making choices about where container's are going to run
on the mesos-agent's processor(s) - this feature is a step toward developing a
robust solution.
The improvement in this JIRA ticket will handle hardware topology detection,
track container-to-core utilization in a histogram, and use a mathematical
optimization technique to select cores for container assignment based on
latency and the container-to-core utilization histogram.
For GPU tasks, the improvement will prioritize selection of cores based on
latency between the GPU and cores in an effort to minimize copy latency.
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