Technology Topics

We are evaluating Compute Express Link™(CXL) memory as external memory for GPUs. We have demonstrated GPU graph processing speeds close to using the host DRAM when the CXL memory latency is under a few microseconds. This indicates the possibility of replacing DRAM with low-latency flash to achieve a cost-effective system.

We introduced high-speed flash memory (XL-FLASH™) and developed a new access method for it, achieving the equivalent speed as keeping all graph data in DRAM. This enables high-speed processing for very large-scale graph with flash memory at lower cost than DRAM.

We demonstrate capability of replacing DRAM for a key-value store database using XL-FLASH™, which has lower bit cost and larger capacity than DRAM. In order to evaluate the possibility of DRAM replacement using XL-FLASH™, we have developed XL-FLASH™ demo drive, and demonstrated the evaluation result that the database using DRAM and the database using XL-FLASH™ have equivalent performance in read access-dominated situation.