During 1999, Sandia purchased 39 scalable units from
Compaq.
All compute nodes currently run Red Hat Linux 6.0 and version 2.2.10 of the Alpha/Linux kernel.
The Myrinet Control Program (MCP) and driver were developed by Sandia to support Portals.
The diagnostic and support nodes have shell scripts that logically partition the compute nodes so that each system software developer can have their own versions of kernels and modules.
The Cplant compilers are simple shell scripts that call the Digtal UNIX compilers with the appropriate paths to locate the support libraries and MPI library.
The compute partition is composed of 592 Compaq XP1000 workstations, each of which contains:
The workstations do not have floppy drives, hard disk drives, or CD-ROM drives.
The 592 compute node machines are connected with Myricom's Myrinet gigabit networking hardware. Each node contains a 64-bit, 33 MHz Myrinet LANai-7 network interface card connected to a 16-port SAN/LAN switch
The system support network is composed of 36 Compaq XP1000 workstations. These nodes are identical to compute nodes, except that each has a hard disk drive.
There are 72 terminal servers that provide console access to all of the compute nodes and level 0 system support stations.
There are 72 power control units that provide the ability to power cycle all of the compute nodes and level 0 system support stations.
There are 72 10/100 BaseT switches that provide the diagnostic network for managing the machine.
The machine is composed of 72 cabinets, each of which contains the following:
In addition, cabinets containing compute nodes also contain: