GRUENCY is the Warsaw practice of Sebastian Michalski. It covers data analysis and quantitative research, custom multi-GPU workstations built under the WS.COMPUTER name, design and manufacturing of precision metal parts, software development and technical advisory.
Econometrics, time-series analysis, Monte Carlo simulation and forecasting, using the methods Sebastian published in Physica A (Elsevier) and applied at the National Bank of Poland.
Quantitative researchMulti-GPU workstations for deep learning, GPU rendering, CAD and simulation: server-grade dual-CPU platforms, ECC memory, air or water cooling and CAD-designed chassis, specified for the workload and tested under sustained load.
GPU workstationsPrecision parts, enclosures and chassis in aluminium and other metals: drawn in CAD, fibre-laser cut, formed on CNC press brakes and powder-coated.
ManufacturingWeb applications, product configurators, technical documentation systems and language-model workflows, specified before development and maintained after handover.
SoftwareConfiguration audits, PCIe and thermal analysis, GPU compatibility reviews, damage assessment and second opinions on technical plans.
Advisory and auditsGRUENCY applies econometrics, time-series analysis, Monte Carlo simulation and forecasting to a client's data and questions. Sebastian Michalski uses the methodology he published as sole author in Physica A (Elsevier) and applied in work for the National Bank of Poland.
Each build is planned as a whole: processor platform, PCIe topology, GPU spacing, memory, storage, cooling, power delivery, chassis, transport and long-term serviceability.
Each WS.COMPUTER machine is specified for its workload. Three configurations come up most often.
For freelancers and small studios: design, rendering and visualisation at the desk, quiet under load.
For larger graphics studios and architecture offices. ECC memory sized to the task, air or water cooling, specified for sustained full-power runs.
For deep learning, simulation and large language models. PCIe lanes planned per GPU and a noise level agreed in advance.
Not a typical configuration, but a result: in 2017 WS.COMPUTER built the world's first 11-GPU water-cooled prototype.
GRUENCY designs and makes precision parts in aluminium and other metals. Each part is drawn in CAD, cut on a fibre laser, formed on CNC press brakes and powder-coated. The WS.COMPUTER chassis is made this way.
GRUENCY builds web applications and digital tools: product configurators, technical documentation systems and language-model workflows. Each is specified before development and maintained after handover. The WS.COMPUTER configurator at ws.computer is one of them.
GRUENCY reviews workstation configurations, quotes and technical plans and reports its findings in writing.
Configurations, thermal designs and methodologies, before purchase, after a failure or when a plan needs a second opinion.
Trusted by studios, artists and production teams. Machines, models and software are delivered from Warsaw and commissioned remotely.
Machines for model training and local language-model inference that run at full power for days.
Multi-GPU OctaneRender and Redshift systems built to an agreed noise level.
Statistical models, simulation code and the machines to run them.
Simulation and visualisation workstations balanced across CPU, GPU and memory bandwidth.
Configurators, documentation systems and language-model workflows.
A single machine or tool, with support from the person who built it.
Quantitative economist, scientific programmer, workstation architect
Sebastian worked on econometric research and cash-circulation forecasting at the National Bank of Poland, published a sole-author methodology paper in Physica A (Elsevier) and taught at SGH Warsaw School of Economics. Since 2011 he has designed and built multi-GPU workstations as founder of GRUENCY and WS.COMPUTER.
He handles each project himself, from the workload analysis and PCIe layout to the cooling loop and support after delivery. In the OctaneRender community he is known as smicha.
Awarded by Prof. Leszek Balcerowicz, President of the National Bank of Poland, for optimisation work on currency circulation in Poland.
For co-authoring a chapter of the textbook Econometrics and Operations Research, PWN Polish Scientific Publishers.
Published by Elsevier Science in Physica A: Statistical Mechanics and its Applications: a Monte Carlo method that reduces bias and variance of detrended fluctuation analysis for long-memory time series.
The world's first 11 water-cooled GPUs on a dual-CPU server platform in a single CAD-designed case.
Supplier of high-end workstations to leading computer-graphics, visualisation and architecture studios worldwide, among them NVIDIA.
Several thousand posts on the OctaneRender forum about choosing components for self-built render workstations: GPUs, power, cooling and chassis. Known there as smicha.
Selected feedback from WS.COMPUTER clients, published with their consent.
“The scientist who builds these machines.”
“Best workstation I've had in 25 years of 3D work. Custom built by WS.COMPUTER, rock solid under heavy Cinema 4D, Houdini and Redshift loads, and the service was spot on start to finish.”
“The workstation is very professionally built, everything feels high quality, and the whole process from ordering to delivery was smooth and straightforward.”
“Still running silent and smooth since 2019. No issues. That quad 4090 setup is awesome for running local LLMs these days.”
“The machine was rendering for more than 400 hours straight and I have the feeling that it became even quieter now.”
“Wahnsinns-Workstation — a fabulous beast, individually crafted for us.”
A conversation about the workload, model, application or machine. Free of charge.
Scope and architecture in writing, with a fixed quote.
Built by hand in Warsaw: laser-cut, powder-coated chassis, photographed at every stage.
Burn-in, thermal profiling and a noise check for machines. Models and applications are tested against the brief.
Remote commissioning, then direct contact with Sebastian.
Quantitative research and modelling, custom multi-GPU computing systems under the WS.COMPUTER name, web applications and digital tools, and technical advisory.
WS.COMPUTER is the name of the workstations. GRUENCY is the practice that covers research, design, software and advisory. Both are run by Sebastian Michalski.
When the workload needs more GPUs, PCIe lanes, cooling capacity or a lower noise level than a standard configuration offers. If a standard machine fits the workload, the consultation says so.
It depends on component availability. The delivery date is given with the fixed quote, and progress photos are sent during the build.
Yes, across the EU and worldwide. Machines ship in custom transport packaging and are commissioned remotely on arrival.
Component warranties are passed on in full, workmanship is guaranteed, and support is provided directly by Sebastian.
Hardware gets a fixed price after specification. Research and software work is scoped and quoted per project.
Yes: configuration audits, PCIe and thermal analysis, damage assessment, and reviews of models, data work and technical plans.
Rack systems and small clusters, yes. Data-centre scale projects are outside the scope of the practice.
Describe the workload, the constraint or the question. Sebastian replies personally within two working days.
Or email info@gruency.com