Processing in Memory: DRAM Is About to Do Math
Summary
The article analyzes Samsung's LPDDR5X-PIM memory with in-package compute for AI inference, highlighting 614 GB/s internal bandwidth and the implications for local LLM processing. It covers the hardware design, software challenges (quantization mapping, memory layout, GEMV vs GEMM), benchmark results, and the timeline for PIM adoption and standardization, concluding that while silicon-level proof exists, software and ecosystem readiness remain the main hurdles.