NVIDIA PLAYS CATCH UP WITH UNIFIED MEMORY
$ VLgQLfiFDQW SHUIRUPDQFH ERWWOHQHFN LQ G38 FRPSXWLQg KDV DOwDyV EHHQ the act of moving data between main memory systems and graphics memory. NVIDIA’s existing GPU technology, including the powerful Kepler architecture found on the GTX Titan, doesn’t allow the graphics processing unit to access system memory directly. Instead, the CPU and GPU store data on their own respective (and exclusive) memory systems. During computational operations, data transfer between the two processing units is carried out via an interconnect channel. This transfer of data involves copying of information; as such, this introduces both redundancy as well as performance latency.
Enter Heterogeneous System Architecture (HSA), an initiative driven by powerhouse players such as AMD, ARM, Texas Instruments, Samsung Electronics and Qualcomm, which aims to integrate both CPU and GPU memory, as well as eliminate the LQHIfiFLHQFLHV FDXVHG Ey WKH