vLLM, SGLang, Ollama & Kubernetes GPU Config Compiler
Stop guessing --gpu-memory-utilization, --tensor-parallel-size, and --max-model-len by trial and error. Select your open-weight model, quantization, context target, and GPU topology to compile production-ready launch commands and container manifests.
Cluster & Runtime Parameters
Key Flag Guardrails Compiled Automatically
Tensor parallelism splits attention heads and MLP matrices across NVLink or PCIe devices, so --tensor-parallel-size must evenly divide query and KV head counts while leaving headroom for NCCL all-reduce buffers and CUDA graph capture.
When KV cache quantization (FP8 E4M3 or Q8_0) is selected, VRAMLab emits --kv-cache-dtype fp8 for vLLM, --kv-cache-dtype fp8_e4m3 for SGLang, and OLLAMA_KV_CACHE_TYPE=q8_0 / --cache-type-k flags so long-context concurrency doubles without touching weight precision.
Back-of-the-envelope rules ignore three dominant variables in modern open-weight inference: GGUF super-block quantization scales (where Q4_K_M averages 4.85 bits/weight rather than 4.00), KV cache growth across long context windows and concurrent continuous-batching slots, and Mixture-of-Experts routing where all 671B or 235B parameters sit in VRAM while only 37B or 22B stream per generated token.