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Practical AI

The Future of AI Infrastructure with CoreWeave

50 min episode · 2 min read
·
Corey Sanders

Episode

50 min

Read time

2 min

Topics

Investing, Fundraising & VC, Leadership

AI-Generated Summary

Key Takeaways

  • AI Infrastructure Specialization: Training workloads spanning hundreds to tens of thousands of interconnected GPUs require pre-planned, purpose-built infrastructure using specialized networking like InfiniBand or RoCE. General-purpose cloud's fungible, deploy-on-demand model actively slows AI workloads. Organizations running large training jobs should audit whether their infrastructure is co-designed for deep GPU interconnection rather than adapted from commodity compute.
  • GPU Straggler Detection: When a training job runs across thousands of GPUs, a single underperforming GPU degrades the entire job's output without obvious visibility. CoreWeave's straggler detection tooling identifies which specific GPU is slowing down. Teams running large-scale training should implement hardware-level observability that distinguishes hard failures from soft performance degradation before attributing slowdowns to model or data issues.
  • ARIA Research Agent Workflow: CoreWeave's ARIA (AI Research and Iteration Agent) continuously analyzes training experiments and recommends next steps, replacing manual review of line charts across multiple runs. Practitioners can receive experiment results and iteration recommendations via mobile overnight. This shifts the researcher's role from dashboard interpretation to judgment calls on agent-generated recommendations, compressing experimentation-to-production timelines.
  • Sunk: Slurm on Kubernetes: CoreWeave built Sunk (Slurm on Kubernetes) to combine Slurm's job scheduling, familiar to AI researchers, with Kubernetes' orchestration and infrastructure failure management. Sunk Anywhere extends this to other clouds and on-premises environments via Kubernetes operators. Teams already using Slurm for research workloads can adopt Sunk to reduce infrastructure management overhead without abandoning existing scheduling workflows.
  • The AI Development Loop: Production AI applications require continuous iteration across prompt tuning, model swapping, fine-tuning, and reinforcement learning rather than one-time deployment. CoreWeave's integrated stack connects inference traces via Weights & Biases, evaluation sandboxes, model registries with version lineage, and ARIA recommendations. Teams should structure development pipelines so production trace data feeds directly back into improvement cycles rather than treating deployment as a terminal step.

What It Covers

Corey Sanders, SVP of Product at CoreWeave, explains why AI workloads require purpose-built infrastructure distinct from general-purpose cloud, covering training optimization, inference architecture, the AI development loop, agentic workflows, and CoreWeave's ARIA research agent and Slurm-on-Kubernetes platform called Sunk.

Key Questions Answered

  • AI Infrastructure Specialization: Training workloads spanning hundreds to tens of thousands of interconnected GPUs require pre-planned, purpose-built infrastructure using specialized networking like InfiniBand or RoCE. General-purpose cloud's fungible, deploy-on-demand model actively slows AI workloads. Organizations running large training jobs should audit whether their infrastructure is co-designed for deep GPU interconnection rather than adapted from commodity compute.
  • GPU Straggler Detection: When a training job runs across thousands of GPUs, a single underperforming GPU degrades the entire job's output without obvious visibility. CoreWeave's straggler detection tooling identifies which specific GPU is slowing down. Teams running large-scale training should implement hardware-level observability that distinguishes hard failures from soft performance degradation before attributing slowdowns to model or data issues.
  • ARIA Research Agent Workflow: CoreWeave's ARIA (AI Research and Iteration Agent) continuously analyzes training experiments and recommends next steps, replacing manual review of line charts across multiple runs. Practitioners can receive experiment results and iteration recommendations via mobile overnight. This shifts the researcher's role from dashboard interpretation to judgment calls on agent-generated recommendations, compressing experimentation-to-production timelines.
  • Sunk: Slurm on Kubernetes: CoreWeave built Sunk (Slurm on Kubernetes) to combine Slurm's job scheduling, familiar to AI researchers, with Kubernetes' orchestration and infrastructure failure management. Sunk Anywhere extends this to other clouds and on-premises environments via Kubernetes operators. Teams already using Slurm for research workloads can adopt Sunk to reduce infrastructure management overhead without abandoning existing scheduling workflows.
  • The AI Development Loop: Production AI applications require continuous iteration across prompt tuning, model swapping, fine-tuning, and reinforcement learning rather than one-time deployment. CoreWeave's integrated stack connects inference traces via Weights & Biases, evaluation sandboxes, model registries with version lineage, and ARIA recommendations. Teams should structure development pipelines so production trace data feeds directly back into improvement cycles rather than treating deployment as a terminal step.

Notable Moment

Sanders, who deployed the first Linux infrastructure on what was then called Windows Azure, argues that his two decades of cloud experience initially acted as a liability at CoreWeave — prior assumptions about fungible compute actively prevented him from seeing what AI-specific infrastructure actually required.

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Episode Transcript

Welcome to the Practical AI podcast, where we break down the real world applications of artificial intelligence and how it's shaping the way we live, work, and create. Our goal is to help make AI technology practical, productive, and accessible to everyone. Whether you're a developer, business leader, or just curious about the tech behind the buzz, you're in the right place. Be sure to connect with us on LinkedIn, x, or Blue Sky to stay up to date with episode drops, behind the scenes content, and AI insights. You can learn more at practicalai.fm. Now onto the show. Welcome to another episode of Practical AI. We are the podcast that tries to make AI practical, productive, and accessible for everyone. We get to talk to all sorts of cool people in industry. And today, I wanna introduce you to Corey Sanders, Sanders, who is the senior vice president of product at CoreWeave, which, we've been seeing in the news quite a lot lately and looking forward to learning more about CoreWeave and and the various problems it solves and the and the and the position in the AI world that it's fulfilling. Welcome to the show, Corey. Thanks, Chris, for having me. I was, yeah, I was gonna say you got to talk to all kinds of cool people, but today you're stuck with me. So here we go. Oh, no. No. Yeah. That's funny. No. No. I I gotta say, you have a really interesting background. I I know, like, with things changing as fast as they are, I know, you you did a a a long period at Microsoft before coming to CoreWeave. Yeah. And and you have seen so much of the cloud landscape change. Like, I can't think of anyone better to address that in in terms of doing kinda like all the things you did in Azure and then coming to a little bit of a different problem set as I'm as as I'm looking forward to hearing from you about. And, so anyway yeah. If you could if you could kinda start us off and and kinda what problem are you inter what problems are you interested in, and kind of paint a picture of of how you see the world from where you're sitting. Yeah. No. It's a great question. And yeah. I mean, absolutely right. Like, I I, I've been, you know, did twenty years at Microsoft before I joined CoreWeave and and and worked in the early days of Azure. And so, you know, it's been, it's been a trip now to kind of, take a step into CoreWeave and and think about is many of the same approaches we had with Azure in the early days, now applying with an AI specific lens. And that's really sort of the right way to think about what, you know, I think CoreWeave is doing and sort of my view on on sort of the world and and the industry right now …

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Books, tools, and gear mentioned in this episode

SignalCast may earn commission on purchases via these links.

Tools

  • Sunk (Slurm on Kubernetes) to combine Slurm's job scheduling, familiar to AI researchers, with Kubernetes' orchestration and infrastructure failure management.
  • Sunk (Slurm on Kubernetes) to combine Slurm's job scheduling, familiar to AI researchers, with Kubernetes' orchestration and infrastructure failure management.
  • by Framer

    SPONSORS: Framer (https://framer.com/practicalai)
  • ARIABy guest

    by CoreWeave

    CoreWeave's ARIA (AI Research and Iteration Agent) continuously analyzes training experiments and recommends next steps, replacing manual review of line charts across multiple runs.
  • by Weights & Biases

    CoreWeave's integrated stack connects inference traces via Weights & Biases, evaluation sandboxes, model registries with version lineage, and ARIA recommendations.
  • SunkBy guest

    by CoreWeave

    CoreWeave built Sunk (Slurm on Kubernetes) to combine Slurm's job scheduling, familiar to AI researchers, with Kubernetes' orchestration and infrastructure failure management.

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