The Cray XD1 was an entry-level supercomputer range, made by Cray Inc. The XD1 uses AMD Opteron 64-bit CPUs, and utilizes the Direct Connect Architecture over HyperTransport to remove the bottleneck at the PCI and contention at the memory. The MPI latency is ¼ that of Infiniband, and 1/30 that of Gigabit Ethernet.

Over the next several months, OSC engineers would install the 16-MSP Cray X1 system, the Cray XD1 system and the 33-node Apple Xserve G5 Cluster at Springfield office. A 1-Gbit/s Ethernet WAN service linked the cluster to OSC’s remote-site hosts in Columbus.

4 times lower latency than Myrinet (small message). The Cray XD1 has sent 1 KB before others have sent a single byte. Dedicated management processors, real-time OS and communications fabric. Proactive background diagnostics with self-healing.

Dec 9, 2004 · The Cray XD1 supercomputer combines AMD's 64-bit Opteron processors, Linux OS, and an advanced interconnect to provide high-performance computing for engineering tasks. The computer...

Apr 5, 2005 · The Cray XD1, one of the latest innovations from the world’s best-known supercomputer manufacturer, leverages Xilinx’s FPGA technology to provide massive algorithm acceleration through hardware-based implementation of compute-intensive algorithmic tasks.

Oak Ridge National Laboratory received 12 chassis of early access Cray XD1 nodes in October 2004, where each chassis has 12 AMD Opteron proces-sors. This paper describes our initial experiences...

study wideband acoustic radiation and scattering from submerged elastic structures. With 150 FPGAs, NRL’s XD1 is the largest reconfigurable Cray supercomputer. We have started to explore the application of FPGA to accelerate scientific codes. First applications are from users who already had VHDL codes running on a local system with a single FPGA.

Cray has recently announced the availability of the Cray XD1: an AMD Opteron based cluster system with a high-speed proprietary interconnect (RapidArray). The Cray XD1 system makes good use of commodity components (processor, memory, disks, …

The general structure of an XD1 is as follows: one chassis houses up to 6 compute cards. Each compute card has 2 AMD Opterons at 2.2 GHz and one or two RapidArray Processors (RAPs) that handle the communication.

View and Download Cray XD1 hardware installation and upgrade online. XD1 desktop pdf manual download.