Greetings, fellow developers! I wanted to share some insights from our recent project to expand our LLM training capabilities. We're based in Norway and have recently completed the addition of 1.5 petabytes of flash storage to our data center. Our primary goal was to optimize costs without compromising on performance.
We evaluated several storage solutions, but ultimately opted for Samsung's high-density flash arrays due to their impressive cost-to-performance ratio. They provided the robust IOPS we required while keeping within our budget constraints. This was crucial as we're training models like Falcon 180B and LLaMA 2 across multiple nodes, and the faster data throughput has significantly reduced our training times.
Additionally, we leveraged storage management tools like OpenZFS, which has been a game-changer in reducing downtime during training, thanks to its advanced snapshot and replication features. Our early internal benchmarks show a 25% improvement in data retrieval speeds, which directly impacted our model's iteration cycles.
Of course, transitioning to such a large-scale storage setup wasn't without its challenges. Ensuring data redundancy, maintaining high availability, and integrating with our existing Google Cloud infrastructure were some of the hurdles we had to overcome. But, the experience has been invaluable and might hold insights for anyone looking to scale their training operations affordably.
Has anyone else recently undergone similar transitions? Would love to hear your experiences or any advice you might have!
We recently expanded our infrastructure as well, but we used a hybrid approach with a mix of on-premise HDDs for cold storage and SSDs for hot data. The cost savings were substantial, about 30% less than going full SSD. The trade-off was slightly reduced performance, but using Lustre and tuned caching strategies, we barely noticed a difference for our workloads.
Great insights, thanks for sharing! I've been curious about OpenZFS for a while now. Did you face any issues with compatibility between OpenZFS and your Google Cloud infrastructure? We're considering a similar setup and any lessons learned would be super helpful.
