Taking the securities industry as an example, with the normalization of mobile internet application and the acceleration of digital transformation of the industry, the securities industry has entered the era of new institutions, showing the characteristics of business institutionalization and service specialization, and the market competition is becoming increasingly fierce. The importance of financial science and technology support is increasingly prominent. The high-speed trading server based on Inspur K 1 Power adopts innovative technologies such as low-latency network card acceleration, and is committed to helping brokers seize opportunities with lower delay and improve customer experience.
Inspur K 1 power supply is accelerated by RDMA IB network card equipment.
The stock market is changing rapidly, and the real-time market service with high timeliness and high accuracy to millisecond or even microsecond level can win more operation time and space for investors' investment decisions.
The ultra-fast transaction system based on Inspur K 1 Power adopts ultra-low latency RDMA IB network card to accelerate, which has lower latency than the traditional Ethernet card. In the traditional Ethernet mode, when transmitting data between two servers, the data must be copied from the application cache to the TCP protocol stack cache of the kernel, then to the driver layer, and finally to the network card cache. Multiple memory copies need the intervention of CPU, which leads to processing delay as high as tens of microseconds. Too much CPU participation in the whole process also consumes a lot of CPU performance, which affects the normal data calculation. In RDMA mode, application data can bypass the kernel protocol stack and write data directly to the network card, that is, the network card can directly read user-mode data. Because Inspur K 1 Power server supports PCIe Gen4, the processing delay is reduced from tens of microseconds to 1 microsecond, and the whole process hardly needs CPU participation, saving performance.
In order to improve the usability of IB card, Inspur commercial machine encapsulates the necessary interfaces for establishing connection and calling IB transmission for reading and writing. Users can communicate through IB interface without knowing the complicated programming model and details of IB API, and experience the low latency characteristics of IB RDMA.
In the future, the advantages of processor and CAPI functions will be integrated.
The new POWER9 processor on Inspur K 1 Power server has many advantages in reducing system delay. The advantage of multi-core and multi-threading, CPU single core and four threads can easily cope with high concurrency, the main frequency is as high as 3.8GHz and the clock cycle is faster; Support PCIe 4.0, increase IO bandwidth by 2 times, and reduce latency1/2; L3 cache up to 1 10M greatly improves the data hit rate; Support CAPI to reduce the data acquisition delay of FPGA to 1/36 of traditional I/O architecture.
According to the future development plan, the high-speed trading system based on Inspur K 1 Power will explore the FPGA acceleration scheme based on CAPI, in which CAPI will enable heterogeneous devices to directly access the system memory using virtual addresses. As we all know, NVLink technology enables CPU and GPU to share memory and directly access each other's memory, which greatly improves the cooperation efficiency between CPU and GPU. Similarly, CAPI, as the interface between FPGA and processor, will make the device memory a part of the system memory mapping, so that the software running on FPGA and CPU can see the same virtual memory address, that is, memory sharing. These advantages of link and bandwidth, combined with the advantages of data transmission path, make Inspur K 1 Power have higher transmission rate and shorter IO path, thus reducing the delay of data acquisition to 300 nanoseconds.
In the era of digital economy, the low-latency network card scheme based on Inspur K 1 Power accelerates the digital transformation of the industry with the advantages of lower latency and high reliability, high security and high performance of Inspur K 1 Power server.