# firstsecondit.com > AI-optimized mirror of firstsecondit.com containing 4 pages totalling 113 words of clean markdown content, structured data, and semantic HTML. Original source: https://firstsecondit.com/. Last updated: 2026-06-14T02:37:16.808Z. Each page is available as HTML (with JSON-LD structured data) and Markdown (text-only, ideal for LLMs and RAG). ## Homepage - [First Second iT](/content/site-root.html): Sandbox development of innovative HPC projects. Primarily focussed on geophysical algorithm development for seismic imaging. Also provide UNIX consultant services (e.g. Linux), especially scalable parallel computing using MPI and OpenMP. (54 words) ## Articles & Blog Posts - [Cookie Policy](/content/cookie-policy/index.html): A high performance computing (HPC) and geophysics consultancy with emphasis on research and development of seismic processing and imaging software. The name first second signifies the importance of the first second of seismic energy recording time to imaging the earths subsurface. This interval contains energy transiting young unconsolidated sediments whose seismic velocities are relatively slow and spatially variable. This inhomogeneity causes significant distortion to deeper layers. (54 words) - [400 Bad Request](/content/sitemap_pages-xml.html) (4 words) - [sitemap-xml.html](/content/sitemap-xml.html) (1 words) ## Resources - [Full Page Index](/index.html): Browse all cached pages with rich metadata - [About This Cache](/content/about.html): Methodology, technical details, and usage guidelines - [XML Sitemap](/sitemap.xml): Machine-readable sitemap for crawler discovery - [Robots.txt](/robots.txt): Crawler directives