We tear down the modern GPU stack to board, architecture and packaging level — then map the one realistic path for India to build an open GPU: proven open RISC-V IP, Indian OSAT/ATMP packaging, and a clearly-labeled 2035 chiplet vision.
Public teardowns and JEDEC datasheets let us reconstruct the GB202 board — power delivery, memory, recovered BOM — without any proprietary netlist. But we are blunt about one wall: the silicon is TSMC 4N EUV. No pick-and-place line makes 4nm transistors. So we separate what's truly buildable from what needs a fab.
PCB layer count, VRM phase topology, 12V-2x6 power path, GDDR7 placement and length-matching — all observable, all reproducible by an Indian board house.
SIMT execution, SM layout, memory hierarchy and the CUDA/PTX/SASS software moat — mapped from public docs to know exactly what an open core must answer.
Drop in Vortex (RISC-V GPGPU) or a minimal core, prototype on FPGA, target a mature/open node (130–65nm shuttle, SCL Mohali) — silicon you can actually tape out.
Assemble and test at Kaynes/TSAT-class OSAT. Chiplet/2.5D packaging is the bridge between imported leading-edge dies and a sovereign open GPU.
Three honest phases, each with the real bill of materials, the real machines, real cost bands, and the output you get. Phase 0 gives you a working GPU in weeks; Phase 1 puts real Indian-designed silicon in your hand; Phase 2 is the labeled 3090/5090-tier roadmap that needs a fab partner — and we say so.
Every buildable step maps to capability that already exists around Pune — the same SMT/reflow lines our drone factory runs, the Chakan precision corridor, C-DAC/IIT RISC-V talent, and India's new OSAT/ATMP push. New silicon, new jobs, local supply chain.
Not theory — real engineers who taped out or demoed working open GPUs, from a maker-fair card to silicon on an open PDK.
The backend ingests the open engineering corpus and the 12-book reading ladder. Search it right here.
Generated by the Wave-1 research workflow from real sources. Genius & wow factors are cited; hop factors are labeled forward-looking.
The reference manuals that feed the ChromaDB + 1.58-bit BitNet brain — sourced legally only (buy, a university/public library, or the authors' open lecture material; no shadow libraries). Ordered from transistor to GPU.