Author
Published
30 Oct 2019Form Number
LP1241PDF size
11 pages, 119 KBAbstract
From a network performance perspective, the recommended memory population for Lenovo® ThinkSystem™ servers is usually one DIMM per memory channel (1 DPC) at a minimum. However, customers may want a smaller quantity of DIMMs because they do not require the memory capacity.
The purpose of this paper is to measure the precise effect on network performance with various memory populations and then to provide a guide for customers to follow to select a suitable memory configuration according to their workload.
RDMA, TCP and UDP network performance data using 64K packet size is measured on two Lenovo ThinkSystem SD530 servers with a direct point-to-point connection. Tests were performed using a Mellanox ConnectX-4 EDR VPI adapter and each test was performed 30 times. The results show that RDMA performance is independent of the memory population, but a balanced memory configuration across the populated memory channels is a key factor for TCP/UDP performance.
This paper is for customers who run applications with high-performance networking needs and need to know how the memory configuration may affect performance. Readers should have a basic understanding of memory and networking technologies.
Table of Contents
Introduction
Methodology
Results
Conclusion
To view the document, click the Download PDF button.
Configure and Buy
Full Change History
Course Detail
Employees Only Content
The content in this document with a is only visible to employees who are logged in. Logon using your Lenovo ITcode and password via Lenovo single-signon (SSO).
The owner of the document has determined that this content is classified as Lenovo Internal and should not be normally be made available to people who are not employees or contractors. This includes partners, customers, and competitors. The reasons may vary and you should reach out to the authors of the document for clarification, if needed. Be cautious about sharing this content with others as it may contain sensitive information.
Any visitor to the Lenovo Press web site who is not logged on will not be able to see this employee-only content. This content is excluded from search engine indexes and will not appear in any search results.
For all users, including logged-in employees, this employee-only content does not appear in the PDF version of this document.
This functionality is cookie based. The web site will normally remember your login state between browser sessions, however, if you clear cookies at the end of a session or work in an Incognito/Private browser window, then you will need to log in each time.
If you have any questions about this feature of the Lenovo Press web, please email David Watts at dwatts@lenovo.com.