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Warning!

Puhti and Mahti will be decommissioned after Roihu becomes available. Users should clean up unnecessary files and move any required data by the end of August 2026. See the Roihu data preparation instructions for details.

Puhti scratch is very full: keep only active data there and move or delete everything else. No new Puhti scratch quota will be granted.

Glossary

A

  • AES: Advanced Encryption Standard

  • AI: Artificial Intelligence

  • API: Application programming interface

  • AVX: Advanced Vector eXtensions

B

  • BLAS: Basic Linear Algebra Subprograms

  • BU: Billing Unit

C

  • CBC: Cipher Block Chaining

  • CD: Continuous Deployment

  • CI: Continuous Integration

  • CLI: Command-Line Interface

  • CPU: Central Processing Unit

  • CTR: Counter

D

  • DBaaS: Database-as-a-Service

  • DFT: 1. Discrete Fourier Transform, 2. Density Functional Theory

E

  • ECB: Electronic Codebook

  • EtM: Encrypt-then-MAC

F

  • FFT: Fast Fourier Transform

  • FLOPS: Floating Point Operations Per Second

  • FTP: File Transfer Protocol

G

  • GC: Grand Challenge (project)

  • GCC: GNU Compiler Collection

  • GCD: Graphics Compute Die

  • GID: Group IDentifier

  • GNU: GNU's Not Unix

  • GPU: Graphics Processing Unit

  • GUI: Graphical User Interface

H

  • HPC: High-Performance Computing

  • HTC: High-Throughput Computing

  • HTTP: Hypertext Transfer Protocol

  • HTTPS: Hypertext Transfer Protocol Secure

I

  • I/O: Input/Output

  • IaaS: Infrastructure-as-a-Service

  • IaC: Infrastructure-as-Code

  • IP: Internet Protocol

L

  • LUMI: Large Unified Modern Infrastructure

M

  • MAC: Message Authentication Code

  • MDS: Metadata Server

  • MDT: Metadata Target

  • MFA: Multi-Factor Authentication

  • ML: Machine Learning

  • MOOC: Massive Open Online Course

  • MPI: Message-Passing Interface

N

  • NFS: Network File System

  • NVMe: Non-Volatile Memory express

O

  • OMP: Open Multi-Processing

  • OOD: Open OnDemand

  • OSS: Object Storage Server

  • OST: Object Storage Target

P

  • PaaS: Platform-as-a-Service

  • PBKDF1: Password-Based Key Derivation Function 1

  • PBKDF2: Password-Based Key Derivation Function 2

  • PCI: Peripheral Component Interconnect

  • PCIe: Peripheral Component Interconnect express

  • PI: Principal Investigator

  • PM: Project Manager

  • PME: Particle-Mesh Ewald

  • PRACE: Partnership for Advanced Computing in Europe

Q

  • QLM: Quantum Learning Machine

  • QPU: Quantum Processing Unit

R

  • REPL: Read–Eval–Print Loop

  • RSA: Rivest-Shamir-Adleman

S

  • SaaS: Software-as-a-Service

  • SLURM: Simple Linux Utility for Resource Management

  • SMT: Simultaneous Multithreading

  • SPoF: Single point of Failure

  • SQL: Structured Query Language

  • SSH: Secure SHell

  • SSL: Secure Sockets Layer

T

  • TLS: Transport Layer Security

  • TOTP: Time-based One-Time Password

U

  • UI: User Interface

  • UUID: Universally Unique Identifier

  • UX: User Experience

V

  • VM: Virtual Machine