Package manager

A package manager or package-management system is a collection of software tools that automates the process of installing, upgrading, configuring, and removing computer programs for a computer in a consistent manner. A package manager deals with packages, distributions of software and data in s. Packages contain metadata, such as the software's name, description of its purpose, version number, vendor, checksum (preferably a cryptographic hash function), and a list of dependencies necessary for the software to run properly. Upon installation, metadata is stored in a local package database. Package managers typically maintain a database of software dependencies and version information to prevent software mismatches and missing prerequisites. They work closely with software repositories, binary repository managers, and app stores. Package managers are designed to eliminate the need for manual installs and updates. This can be particularly useful for large enterprises whose operating s

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10.1 A pin-efficient 20.83Gb/s/wire 0.94pJ/bit forwarded clock CNRZ-5-coded SerDes up to 12mm for MCM packages in 28nm CMOS

Klaas Lammert Hofstra, Ali Hormati, Sergio Pesenti, Mohammad Amin Shokrollahi, Anant Pratap Singh, Seyed Armin Tajalli, Omid Talebi Amiri, Christoph Walter

High-speed signaling over package substrates is key to delivering the promise of 2.5D integration. Applications abound and include high-density memory interfaces, sub-division of large dies to increase yield and lower development time, sub-division of a die to achieve upward or downward scalability, or connecting to an off-chip SerDes or optics engine. Each of these in-package applications typically has high throughput and onerously low power constraints along with a low-loss channel. Several solutions have been proposed. Interposer substrates [1], or Chip-on-Substrate-on-Wafer [2] allow for very high-density wiring and low power using CMOS transceivers. Their high manufacturing and testing cost makes them prohibitive for anything but high-end applications. A different approach using high-speed ground-referenced single-ended signaling is reported in [3], which is intended for shorter channels up to 4.5mm and a BER of 1e-12. An approach using differential signaling on up to 0.75" of Megtron 6 material and a BER of 1e-9 is reported in [4]. A comparison is given in Fig. 10.1.1.

2016

The Microbe browser for comparative genomics

Alexandre Gattiker, Marco Pagni, Jacques Rougemont, Ioannis Xenarios

The Microbe browser is a web server providing comparative microbial genomics data. It offers comprehensive, integrated data from GenBank, RefSeq, UniProt, InterPro, Gene Ontology and the Orthologs Matrix Project (OMA) database, displayed along with gene predictions from five software packages. The Microbe browser is daily updated from the source databases and includes all completely sequenced bacterial and archaeal genomes. The data are displayed in an easy-to-use, interactive website based on Ensembl software. The Microbe browser is available at http://microbe.vital-it.ch/. Programmatic access is available through the OMA application programming interface (API) at http://microbe.vital-it.ch/api.

Oxford University Press2009

OPTIMADE, an API for exchanging materials data

Casper Welzel Andersen, Boris Kozinsky, Snehal Pramod Kumbhar, Nicola Marzari, Andrius Merkys, Giovanni Pizzi, Gian-Marco Rignanese, Matthias Scheffler, Christoph Leopold Talirz, Martin Uhrin

The Open Databases Integration for Materials Design (OPTIMADE) consortium has designed a universal application programming interface (API) to make materials databases accessible and interoperable. We outline the first stable release of the specification, v1.0, which is already supported by many leading databases and several software packages. We illustrate the advantages of the OPTIMADE API through worked examples on each of the public materials databases that support the full API specification.

NATURE PORTFOLIO2021

Linux

Linux (ˈlɪnʊks ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typica

Linux distribution

A Linux distribution (often abbreviated as distro) is an operating system made from a software collection that includes the Linux kernel, and often a package management system. Linux users usually ob

Unix

Unix (ˈjuːnᵻks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 a

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