Informatique durableLinformatique durable, linformatique verte, le numérique éco-responsable, ou encore le green IT (appellation officielle en français : éco-TIC) est un ensemble de techniques visant à réduire l’empreinte sociale, économique et environnementale du numérique. Dans le domaine des technologies de l'information et de la communication (TIC), elle conçoit ou recourt à des écotechniques afin de diminuer les impacts que les TIC font subir à l'environnement au cours de leur cycle de vie.
Four-accelerationIn the theory of relativity, four-acceleration is a four-vector (vector in four-dimensional spacetime) that is analogous to classical acceleration (a three-dimensional vector, see three-acceleration in special relativity). Four-acceleration has applications in areas such as the annihilation of antiprotons, resonance of strange particles and radiation of an accelerated charge. In inertial coordinates in special relativity, four-acceleration is defined as the rate of change in four-velocity with respect to the particle's proper time along its worldline.
ROCmROCm is an Advanced Micro Devices (AMD) software stack for graphics processing unit (GPU) programming. ROCm spans several domains: general-purpose computing on graphics processing units (GPGPU), high performance computing (HPC), heterogeneous computing. It offers several programming models: HIP (GPU-kernel-based programming), OpenMP/Message Passing Interface (MPI) (directive-based programming), OpenCL. ROCm is free, libre and open-source software (except the GPU firmware blobs), it is distributed under various licenses.
C to HDLC to HDL tools convert C language or C-like computer code into a hardware description language (HDL) such as VHDL or Verilog. The converted code can then be synthesized and translated into a hardware device such as a field-programmable gate array. Compared to software, equivalent designs in hardware consume less power (yielding higher performance per watt) and execute faster with lower latency, more parallelism and higher throughput.
Chapel (langage)Chapel, the Cascade High Productivity Language, is a parallel programming language that was developed by Cray, and later by Hewlett Packard Enterprise which acquired Cray. It was being developed as part of the Cray Cascade project, a participant in DARPA's High Productivity Computing Systems (HPCS) program, which had the goal of increasing supercomputer productivity by 2010. It is being developed as an open source project, under version 2 of the Apache license. The Chapel compiler is written in C and C++ (C++14).
Flow to HDLFlow to HDL tools and methods convert flow-based system design into a hardware description language (HDL) such as VHDL or Verilog. Typically this is a method of creating designs for field-programmable gate array, application-specific integrated circuit prototyping and digital signal processing (DSP) design. Flow-based system design is well-suited to field-programmable gate array design as it is easier to specify the innate parallelism of the architecture. The use of flow-based design tools in engineering is a reasonably new trend.
Acceleration (special relativity)Accelerations in special relativity (SR) follow, as in Newtonian Mechanics, by differentiation of velocity with respect to time. Because of the Lorentz transformation and time dilation, the concepts of time and distance become more complex, which also leads to more complex definitions of "acceleration". SR as the theory of flat Minkowski spacetime remains valid in the presence of accelerations, because general relativity (GR) is only required when there is curvature of spacetime caused by the energy–momentum tensor (which is mainly determined by mass).
Protection de l'espace exécutableLa protection de l'espace exécutable (executable space protection) correspond, en sécurité informatique, à une protection contre les dépassements de tampon en prévenant l'exécution d'un code sur la pile ou le tas. Une tentative d'attaque sur un système protégé ainsi provoque une exception. Des exemples d'implémentation de ce mécanisme sont : sous Linux : PaX, Exec Shield, et Openwall ; sous OpenBSD et d'autres systèmes : W^X ; sous Microsoft Windows : Data Execution Prevention. Dépassement de tampon Catégo
