External Access Update

September 14, 2020

INL has made significant progress in restoring network connectivity to our external facing systems. HPC users are now able to access HPC resources through hpcondemand.inl.gov and hpclogin.inl.gov.  External users who have received notifications that their HPC password is about to expire can log on to hpclogin.inl.gov and reset their password using the "passwd" command. If your password has already expired, the HPC team will need to send you a new temporary password to use. Please email hpcaccounts@inl.gov for a password reset.

Efforts are continuing to restore hpcview.inl.gov and the XCAIMS website (for requesting new accounts). A notification will be sent out when these services have been restored. Please email the HPC team at hpcsupport@inl.gov with questions or issues. Thank you for your patience.

HPC Staff


​Reactor core simulation

Reactor core simulation

​Fuel Pin simulation and equations​


​Nuclear fuel microstructure simulation


Sawtooth supercomputer​

Front view of the Sawtooth supercomputer at INL

Collaborative Computing Center​


​​​High Performance Computing

Nuclear Science User Facility (NSUF) High Performance Computing (HPC) resources offered through Idaho National Laboratory provide scientific computing capabilities to support efforts in advanced modeling and simulation. These resources support a wide range of research activities, including performance of materials in harsh environments (such as the effects of irradiation and high temperatures), performance of existing light water and advanced nuclear reactors, and multiscale multiphysics analysis of nuclear fuel performance.

INL HPC computing resources are available to industry, universities, national laboratories, and federal agencies to support research and development. Access is generally granted for research related to the DOE Office of Nuclear Energy and INL’s mission focusing on nuclear energy development, workforce development, and education.


  • Sawtooth: an HPE SGI 8600-based system with 99,792 cores, 403 TB of memory and a LINPACK rating of 5.6 Petaflop/s. Sawtooth's network is a nine-dimensional enhanced hypercube utilizing EDR and HDR InfiniBand. Individual compute nodes contain dual Xeon Platinum 8268 processors with 24 cores each.  The majority of compute nodes contain 196 GB of memory while twenty-seven contain 384 GB of memory coupled with four NVIDIA V100 GPUs with 32 GB of on-GPU memory each. Sawtooth came online in late 2019 and ranked #37 on the November 2019 TOP500 list.
  • Lemhi: a Dell 6420-based system with 20,160 cores, 94 TB of memory and a LINPACK rating of 1.0 Petaflop/s. Lemhi's network is an OmniPath fat tree. Individual compute nodes contain dual Xeon Gold 6148 processors with 20 cores each and 192 GB of memory. Lemhi came online in Fall 2018 and ranked #427 on the November 2018 TOP500 list.
  • Falcon: a SGI ICE-X distributed memory system with 34,992 cores, 121 TB of memory and a LINPACK rating of 1.1 Petaflop/s. Falcon's network is a seven-dimensional enhanced hypercube utilizing FDR InfiniBand. Individual compute nodes contain dual Xeon E5-2695 v4 processors with 18 cores each and 128 GB of memory. Falcon came online in Fall 2014 and ranked #97 on the November 2014 TOP500 list.

Access Request

HPC access is provided to users that meet the INL HPC access and usage policy requirements. This policy supports access by industry, universities, and other users that are performing research and development that supports DOE and INL’s missions. The policy is available at:

Access and Usage Policy

To request access to the high performance computing resources, follow the directions listed at:

INL HPC Account Request Directions

Non-U.S. citizens requesting an HPC account are required to submit a Foreign Visitors and Assignments (FV&A) plan to the INL prior to obtaining an HPC account as detailed in the INL HPC Account Request Directions. The FV&A form can be found at:

Foreign Visitors & Assignments (FV&A) Form

Questions? Contact HPC Account and User Coordinator, Stephanie Parker at stephanie.parker@inl.gov or 208-526-4292 (office).


Researchers who make use of INL's HPC resources should include the following standard acknowledgment in their publications and reports:

This research made use Idaho National Laboratory computing resources which are supported by the Office of Nuclear Energy of the U.S. Department of Energy and the Nuclear Science User Facilities under Contract No. DE-AC07-05ID14517.



To report problems accessing or using the INL HPC environment, please contact the INL Help Desk at
208-526-1000 or opscenter@inl.gov.

For other information regarding INL's HPC resources please contact Tami Grimmett at Tami.Grimmett@inl.gov or 208-526-6306.