“Computers used as datacenter servers have usage patterns that differ substantially from those of desktop or laptop computers. We discuss four key differences in usage and their first-order implications for designing computers that are particularly well-suited as servers: data movement, thousands of transactions per second, program isolation, and measurement underpinnings. Maintaining high-bandwidth data movement requires coordinated design decisions throughout the memory system, instruction-issue system, and even instruction set.”
“The CMS detector at the Large Hadron Collider at CERN underwent a replacement of its data acquisition network to be able to process the increased data rate expected in the coming years. We will present the architecture of the system and discuss the design of its layers which are based on Infiniband as well as 10 and 40 GBit/s Ethernet.”
In this video from the 2015 HPC Advisory Council Switzerland Conference, Oded Paz presents: Special Training Session for HPC Systems Managers and Users: EDR InfiniBand, Multicast Operations (setup flow and diagnostic tools), Traffic Load Balancing, InfiniBand Quality Of Service, System Debugging, and open Q&A.
“We introduce a high-performance cost-effective network topology called Slim Fly that approaches the theoretically optimal network diameter. Slim Fly is based on graphs that approximate the solution to the degree-diameter problem. We analyze Slim Fly and compare it to both traditional and state-of-the-art networks. Our analysis shows that Slim Fly has significant advantages over other topologies in latency, bandwidth, resiliency, cost, and power consumption.”
“The Swiss National Supercomputing Centre (CSCS) offers a range of computing and storage services to Swiss and international research communities. These services are provisioned by an array of solutions including leading edge Cray XC40 and hybrid XC30 systems, commodity clusters, files systems such as Lustre and site-wide GPFS storage as well as centre-wide Ethernet and InfiniBand networks.”