Dev.to AI ๐Ÿค– Ai ๐Ÿ‘ 0 ๐Ÿ“– 1 min read

๐Ÿš€ Day 3 of 100 Days of GenAI for DevOps is LIVE!

One of the biggest challenges while running Large Language Models (LLMs) is answering a simple question: ๐Ÿ‘‰ How much GPU memory (VRAM) do I actually need? As DevOps, Platform, and SRE engineers, we're often asked to dep

One of the biggest challenges while running Large Language Models (LLMs) is answering a simple question:

๐Ÿ‘‰ How much GPU memory (VRAM) do I actually need?

As DevOps, Platform, and SRE engineers, we're often asked to deploy models like Llama, Mistral, Qwen, or DeepSeek, but before choosing GPUs, we need to understand what actually occupies GPU memory during inference.

In today's session, we cover:

โœ… Model weights and how quantization changes memory usage

โœ… KV Cache and why it grows with context length

โœ… Activation memory during inference

โœ… Framework overhead and temporary buffers

โœ… A practical formula to estimate VRAM requirements

โœ… Real examples using popular open-source LLMs

By the end of this session, you'll be able to estimate GPU memory requirements before deploying an LLM, an essential skill for anyone working with AI infrastructure.

Looking forward to learning and growing together! ๐Ÿš€

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Originally published by Dev.to AI. Aggregated on AIWithGhost for educational purposes โ€” full credit and traffic to the original publisher.