Lemhi

The Lemhi supercomputer is the latest machine that INL has turned over to the C3plus3 collaboration for management.

History

Beginnings

Lemhi was purchased in 2018 by Idaho National Laboratory. Lemhi is a 504 node Dell C6420 cluster. Each node has dual Intel Xeon Gold 6148 20 core processors running at 2.4GHz. For a total of 20,160 cores. Each node has 192GB of RAM as well. In November 2018, Lemhi was ranked 427 on the top500 list of supercomputers. Lemhi comes in with a theoretical performance of 1.55 PetaFlops offering a modest improvment over its predecessor Falcon (theoretical peak of 1.17 PetaFlops)

Current

In April of 2025, INL turned the hardware over to University of Idaho, Boise State University, and Idaho State University to run collaboratively for university research. The supercomputer has been rebuilt using Rocky Linux 8.10 on the compute nodes. The dual Xeon Gold 6148 processors in each node are packaged with 192 GB of RAM to complete RAM intensive jobs. In order to tackle some big data problems, Omni-Path is used to connect the Falcon nodes to one another as well as a 1.3 PB Lustre parallel file system used for storage and scratch space.