Hands-on tool spotlights. What each one is great at, what it costs you, where it'll surprise you, and whether it's worth switching to over what you already run — the candid guidance you'd want from a teammate who's already lived with it in production.https://frontiercheckpoint.com/https://frontiercheckpoint.com/libraries/trl-sft-dpo-grpo-library/https://frontiercheckpoint.com/libraries/trl-sft-dpo-grpo-library/TRL turns SFT, DPO, and GRPO into Trainer subclasses that inherit the entire Hugging Face stack — accelerate, peft, DeepSpeed. The convenience is real; the cost is that you're debugging someone else's training loop the moment your problem stops looking like the quickstart.Thu, 11 Jun 2026 00:00:00 GMTLibrariesdpogrpopeftfine-tuningrlhfeditors@frontiercheckpoint.comhttps://frontiercheckpoint.com/libraries/vllm-paged-attention-serving/https://frontiercheckpoint.com/libraries/vllm-paged-attention-serving/vLLM treats the KV cache like OS virtual memory — non-contiguous paged blocks — and schedules work at the token, not the request. You get high aggregate throughput; the cost is that per-request latency becomes something you tune rather than something you get for free.Wed, 20 May 2026 00:00:00 GMTLibrariespaged-attentionkv-cacheservingllmeditors@frontiercheckpoint.com