https://www.nas.nasa.gov/hecc/support/kb/157/ https://www.nas.nasa.gov/hecc/support/kb/quota-policy-on-disk-space-and-files_156.html Filesystems on NAS systems have the following types of quotas: Limits on the total disk space occupied by your files Limits on the number of files (represented by inodes) you can store, regardless of size. For quota purposes, directories count... Security and Policies/Other Policies Tue, 01 Sep 2026 10:56:28 -0700 https://www.nas.nasa.gov/hecc/support/kb/common-standard-billing-unit-(sbu)_271.html A common Standard Billing Unit (SBU) normalizes computing time usage across different types of processor architectures, and is used for allocating and tracking usage for both the HECC project and the NASA Center for Climate Simulation (NCCS). For... Security and Policies/Other Policies Tue, 13 Jan 2026 19:04:51 -0800 https://www.nas.nasa.gov/hecc/support/kb/role-of-the-secure-front-ends_54.html The secure front ends (SFEs) are the bastion hosts protecting the NAS secure computing enclave. The enclave includes all of the major HECC systems, including: Aitken, Electra, Endeavour, Lou, and the hyperwall. To access resources inside the... Security and Policies/Security Wed, 31 Dec 2025 16:55:56 -0800 https://www.nas.nasa.gov/hecc/support/kb/obtaining-and-changing-your-nas-password_127.html You will receive a default password for your NAS account as part of the first-time login process. You will also be prompted to change the default password the first time you log in. Note: Your NAS password is sometimes referred to as your "Lou"... Security and Policies/Security Tue, 02 Dec 2025 12:00:04 -0800 https://www.nas.nasa.gov/hecc/support/kb/nas-systems-environment-rules-of-behavior_41.html This document outlines the requirements for use of the computing systems, resources, and facilities located at and/or operated by the NASA Advanced Supercomputing (NAS) Division at NASA Ames Research Center (collectively, "NAS Systems... Security and Policies/Security Tue, 15 Jul 2025 19:11:28 -0700 https://www.nas.nasa.gov/hecc/support/kb/secure-shell-(ssh)-protocol_228.html The Secure Shell (SSH) protocol provides secure, encrypted communication between two untrusted hosts over an unsecured network, requiring users to prove their identities to successfully connect to a remote system. SSH is used both for interactive... Security and Policies/Security Tue, 11 Jul 2023 17:46:55 -0700 https://www.nas.nasa.gov/hecc/support/kb/two-factor-authentication-policy_32.html In the field of security, there are three general factors that can be used to prove that you are who you claim to be: Something you have (such as an ID card) Something you know (such as a password) Something you are (such as your fingerprint) ... Security and Policies/Security Thu, 01 Jun 2023 10:07:28 -0700 https://www.nas.nasa.gov/hecc/support/kb/password-creation-rules_270.html Strong passwords are required to protect the security of NAS systems. When you create or change your NAS password, specify a unique password that you have never used anywhere else. Never use your NAS password for any other application under any... Security and Policies/Security Tue, 28 Mar 2023 12:19:17 -0700 https://www.nas.nasa.gov/hecc/support/kb/security-training-requirements_20.html As a NAS user, you are responsible for being aware of the following account-related policies: Users must comply with the NAS Systems Environment (NSE) Rules of Behavior. Users and NAS staff requesting either a new or a renewed account must... Security and Policies/Security Tue, 28 Mar 2023 12:15:25 -0700 https://www.nas.nasa.gov/hecc/support/kb/mission-shares-policy_168.html Mission directorate shares have been implemented on HECC systems for more than ten years. Implementing shares guarantees that each mission directorate gets its fair share of resources. The share to which a job is assigned is based on the project... Security and Policies/Other Policies Thu, 13 May 2021 17:37:56 -0700 https://www.nas.nasa.gov/hecc/support/kb/authenticating-to-nasas-access-launchpad_634.html In order to perform some basic tasks that use NAS web applications, such as changing your NAS password or logging into the myNAS portal, you must authenticate to NASA's Access Launchpad using your NASA Smartcard or RSA SecurID token. Using Your... Security and Policies/Security Thu, 26 Mar 2020 17:07:49 -0700 https://www.nas.nasa.gov/hecc/support/kb/interactive-data-language-(idl)-license-policy_624.html In order to effectively utilize the limited number of Interactive Data Language (IDL) licenses on NAS-supported workstations or supercomputing systems: Each user is limited to a single interactive IDL license. When using the IDL command line,... Security and Policies/Other Policies Mon, 24 Feb 2020 16:02:59 -0800 https://www.nas.nasa.gov/hecc/support/kb/matlab-license-policy_534.html In order to effectively utilize the limited number of MATLAB licenses on NAS-supported workstations or supercomputing systems: Each user is limited to a single interactive MATLAB license. When using the MATLAB GUI, after four hours of being... Security and Policies/Other Policies Fri, 21 Feb 2020 15:29:58 -0800 https://www.nas.nasa.gov/hecc/support/kb/rsa-securid-tokens_58.html NASA uses RSA SecurID technology to provide secure authentication to its supercomputing resources. To log into the systems in the NAS secure enclave, all NAS users must have an RSA SecurID token. When you get a new NAS account or need to renew an... Security and Policies/Security Mon, 14 Jan 2019 18:49:31 -0800