Geyser and Caldera

Hardware | Central file systems

The Geyser and Caldera clusters are specialized data analysis and visualization resources that users access through the Cheyenne system.

Geyser can be used for most large-scale data analysis and post-processing tasks, including 3D visualization, with applications that do not support distributed-memory parallelism. Applications supported include NCL, VAPOR, MATLAB, Octave, IDL, CDO, and numerous others.

Caldera is designed to run distributed-memory parallel applications; visualization, data analysis and post-processing tasks; and general-purpose GPU code.

See Starting Geyser and Caldera jobs from Cheyenne.



16 large-memory nodes

1 TB DDR3-1600 memory per node (1000 GB usable memory per node)
IBM x3850, quad-socket nodes
Four 10-core, 2.4-GHz Intel Xeon E7-4870 (Westmere EX) processors per node
FDR Mellanox InfiniBand, full fat tree
1 NVIDIA GPU per node


30 nodes, 16 with GPUs

64 GB DDR3-1600 memory per node (62 GB usable memory per node)
IBM x360 M4, dual-socket nodes
Two 8-core 2.6-GHz Intel Xeon E5-2670 (Sandy Bridge) processors per node with AVX
FDR Mellanox InfiniBand, full fat tree
2 NVIDIA GPUs per node (16 nodes)

Central file systems

Geyser, Caldera, and Cheyenne all mount the central GLADE file systems. This means you can analyze your data files in place, without sending large amounts of data across a network or creating copies in multiple locations. Some differences between Cheyenne, Geyser, and Caldera architectures are addressed here: Where to compile.