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Abstract
This paper proposes Hermes, a container-based preemptive GPU scheduling framework for accelerating hyper-parameter optimization in deep learning (DL) clusters. Hermes accelerates hyper-parameter optimization by time-sharing between DL jobs and prioritizing jobs with more promising hyper-parameter combinations. Hermes’s scheduling policy is grounded on the observation that good hyper-parameter combinations converge quickly in the early phases of training. By giving higher priority to fast-converging containers, Hermes’s GPU preemption mechanism can accelerate training. This enables users to find optimal hyper-parameters faster without losing the progress of a container. We have implemented Hermes over Kubernetes and compared its performance against existing scheduling frameworks. Experiments show that Hermes reduces the time for hyper-parameter optimization up to 4.04 times against previously proposed scheduling policies such as FIFO, round-robin (RR), and SLAQ, with minimal time-sharing overhead.
Highlights
Deep learning (DL) has recently seen immense success in various fields, such as computer vision and natural language processing
We evaluate the performance of Hermes using the convolutional neural network (CNN) benchmark [14] from TensorFlow
Performance results show that Hermes shortens the hyper-parameter optimization process up to 4.04 times with minimal time-sharing overhead when compared against scheduling policies supported by other cluster managers such as FIFO, round-robin (RR), and SLAQ
Summary
Deep learning (DL) has recently seen immense success in various fields, such as computer vision and natural language processing. In kill-based preemption, users continuously monitor the convergence of DL training jobs and manually kill the containers not making progress. SLAQ [12] prioritizes low-performing DL jobs by receiving convergence feedback This can harm the performance of hyper-parameter optimization by executing unpromising hyper-parameter combinations first. Convergence-aware scheduling policy: Hermes accelerates hyper-parameter optimization by prioritizing jobs based on the convergence speed. This sharply contrasts to the Gandiva’s approach [7] since not all tasks are trained but important tasks are selected and accelerated. Performance results show that Hermes shortens the hyper-parameter optimization process up to 4.04 times with minimal time-sharing overhead when compared against scheduling policies supported by other cluster managers such as FIFO, round-robin (RR), and SLAQ
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