December 14 - 15, 2021 | Virtual Event
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Wednesday, December 15 • 13:20 - 14:10
Persistent Memory Plus RDMA, New Age Remote Device - Xiao Yang, Nanjing Fujitsu Nanda Software Technology Co., Ltd

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Persistent Memory (PMEM) is a byte-addressable memory device which has not only nearly the same speed and latency of DRAM but also the non-volatility and large capacity of storage. Software can access it directly and keep data even if system is rebooted or shutdown. As a result, many software (e.g database, distributed filesytem) expects PMEM as new age device. But when access data on the remote PMEM, the speed of data transfer based on TCP/IP is obviously slower than that of accessing PMEM, so speed of TCP/IP transmission has become bottleneck. To speed up the access to remote PMEM, RDMA is a good candidate since it can transfer data without involving the processor, cache or operating system. However there are some issues about supporting remote PMEM access based on traditional RDMA, for example traditional RDMA WRITE operation has no gurantee to make persistency. For an upper software solution, Intel initiated Remote Persistent Memory Access (RPMA) OSS library and we do many controbutions on RPMA. For a lower hardware and driver solution, we also focus on the RDMA extension standard specified by Infiniband trade association (IBTA) and try to make SoftRoce driver support remote PMEM access. In this session, I would like to introduce these issues and these two solutions.


Xiao Yang

Linux kernel development engineer, Nanjing Fujitsu Nanda Software Technology Co., Ltd
1) Linux kernel development engineer of Fujitsu Nanda 2) focus on RPMA、RDMA and persisent memory

Wednesday December 15, 2021 13:20 - 14:10 JST
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