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OpenAI 将 k8s 扩展至 7500 个节点以支持机器学习
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简介谷歌外推代发【tg:seogoogle987】
为了满足 GPT-3、CLIP 和 DALL+ 等大型模型的需要,以及类似于神经语言模型的缩放定Op律的快速小规模迭代研究,OpenAI 将基础设施 k8s 集群扩展到 7500 各节点。
据其描述,对于en大型机器学习作业来说,一个节点通常由单个 pod 占据,并且 OpenAI 部署的集群具有二等分带宽,因AI此尽管其有许多节点,但是调度程序的压力相对较低,仅在一项新任务一次性创建数百个 pod 时会有调 将度压力。
除此之外,OpenAI 还详细说明了其在扩展 k8s 集群时的重要工作内容,比如通过改用基 k于别名的 IP 寻址来解决大量节点的联网问题,在专用节点上部署 etcd 和 API 服务器以分散负载,定位使8s用 Prometheus 和 Grafana 收集指标时的 OOM 问题,设计对集群的健康检查,以及在团队中 扩合理分配集群资源等。
不过,OpenAI 也指出,在扩展 k8s 集群时,目前仍有一些问题要解决,比如展至大规模时 Prometheus 的内置 TSDB 存储引擎压缩速度过慢,并且需要很长的时间才能重新 7启动 WAL(写入预录),以及扩展集群时,由于每个 pod 都会被计算为需要一定带宽而带来的网络带宽压50力。然而,尽管还有很多地方需要改进,但 k8s 凭借其出色的扩展能力,仍然能满足其研究需求。
本文0 转自OSCHINA
本文标题:OpenAI 将 k8s 扩展至 7500 个节点以支持机器学习
本文地址:h个节ttps://www.oschina.net/news/127949/openai-sc点以ale-k8s-7500
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