Edison
Current Status: Up
Edison is NERSC's newest peta-flop machine, a Cray XC30, with a peak performance of 2.39 petaflops/sec, 124,800 compute cores, 332 terabytes of memory, and 6.4 petabytes of disk.
File Storage and I/O
Edison has 5 different file systems which provide different levels of disk storage, file I/O performance. You can find information on I/O optimization, disk quotas and purging in this page. Read More »
Debugging and Profiling
These pages describe performance analysis tools CrayPat and IPM; debugging tools DDT and Totalview, and more. Read More »
Performance and Optimization
This webpage provides optimization tips, performance and benchmarking results on Edison. Read More »
Shared and Dynamic Libraries
By default the Edison system runs a limited OS kernel which does not support shared and dynamic libraries. However, users can enable the shared root file system by setting an environment variable (CRAY_ROOTFS=DSL) to enable shared and dynamic library applications to run on the Edison compute nodes. Cray-supported libraries such as SciLib, Portals, MPI, pthreads, and many others are available as dynamic shared objects (DSOs), and you can define and use your own DSOs, too. Shell and python scripts can also run on the compute nodes. Read More »
Cluster Compatibility Mode
Cluster Compatibility Mode (CCM) allows users to run standard ISV applications and other applications that need to use sockets on the Hopper system. Read More »
Cray XC30 User Documentation
Cray documents describing the XC30 programming environment. Read More »
Cray XC30 User Documentation
Cray documents describing the XC30 programming environment. Read More »
