Certain Intel Xeon “Sapphire Rapids” SKUs Come with On-Package HBM
Intel these days, in its 2021 Global Supercomputing Conference presentation, unveiled that selected upcoming-technology Xeon “Sapphire Rapids” SKUs arrive with on-package superior-bandwidth memory (HBM). Offered the context of its presentation, these could be specific SKUs made for high-density HPC setups, in which the processor deal involves particular quantity of “PMEM” (deal memory), other than the processor’s eight-channel DDR5 memory interface.
The sizing of the HBM PMEM, and its position in the memory hierarchy, were in depth, too. Given its significant-density applications, PMEM may possibly not provide as a sufferer cache for the processor, but instead be capable of serving as major memory, with none of the DDR5 DRAM channels populated with DIMMs. On machines with DIMMs, the PMEM will provide as a victim cache for the processor’s on-die last-stage cache, accelerating the memory I/O. “The following-generation of Intel Xeon Scalable processors (code-named “Sapphire Rapids) will provide integrated High Bandwidth Memory (HBM), delivering a dramatic boost in memory bandwidth and a important general performance improvement for HPC purposes that work memory bandwidth-delicate workloads. Users can ability by means of workloads making use of just Large Bandwidth Memory or in blend with DDR5,” claims Intel.