PIM Is All You Need: A CXL-Enabled GPU-Free System ... - arXiv
PIM is a computing paradigm where data processing occurs directly within the memory chips (like DRAM) rather than moving it back and forth to a central CPU or GPU. This eliminates the "memory wall"—the performance bottleneck caused by the slow and energy-intensive transfer of data between memory and processors. 2. The CENT Architecture pim073.jpg
: CXL-based memory expansion offers approximately 8x lower latency compared to network-based RDMA (Remote Direct Memory Access). PIM Is All You Need: A CXL-Enabled GPU-Free System
: Each CXL device in this architecture integrates 16 controllers, each managing two GDDR6-PIM channels. each managing two GDDR6-PIM channels.