Thursday, March 4, 2021

An Integral Part of the Simulation, Design, and Manufacturing Workflow

When the simulation experts in an organization turn their models into applications, the overall simulation, design, and manufacturing workflow improves. The simulation expert no longer has to rerun the same or slightly different analyses for other collaborators or customers and the organization can spread the advantages of simulation to a larger group of people. To build their own computational applications, your simulation experts need COMSOL Multiphysics® with its built-in Application Builder. To make these applications accessible to many people at a fraction of the cost, your organization needs COMSOL Server™.

Each simulation application has its own customized user interface, where the application creator can control the inputs and outputs that the application user can apply and manipulate. Experts create these apps by including only the parameters relevant to the design of a specific process or product. This better transfers the simulation expert’s knowledge and experience to the people involved in the design and manufacturing processes across all engineering disciplines in an organization — even those without prior simulation experience.

The simulation expert brings theoretical knowledge and the power of simulation to the optimization of a design or process. Other project stakeholders can then bring their own experiences of building or operating these designs and processes to the overall workflow by using the simulation application and, potentially, providing feedback to the simulation expert aruba acdx.

To make such an augmented workflow a reality, the applications need to be easy to distribute, access, and run. COMSOL Server™ is the product for deploying applications and bringing them to the hands of colleagues and team members. It is also the hub for managing many different applications over multiple functions or operations in an organization.

Scale Your Computational Resources and Easily Maintain Applications

COMSOL Server™ has exactly the same computational demands per user as COMSOL Multiphysics®. Through applications, COMSOL Server™ gives users access to the same powerful simulation technology that is found in COMSOL Multiphysics®.

All users logged into the COMSOL Server™ product can run applications on the computer where it is installed. Alternatively, the load can be distributed by installing COMSOL Server™ to run applications on multiple computers. In that case, one computer is set as the primary server for handling user account and access management, and a series of other computers are used for computations, called secondary servers. It is also possible to have multiple sets of primary and secondary servers, all controlled by a single license manager, which is useful if you have teams that want to only use the computational resources that are allocated for them.

When a user runs an application via the web browser or COMSOL Client, their own computer or mobile device does not need to perform the multiphysics calculations. These can all be done on the server computer(s). Since you are controlling the access and use of applications through a centralized hub, any changes or updates you make are immediately available to all users. You can run up to four application sessions per concurrent user.

By using cluster computing technology with COMSOL Server™, it is possible to configure applications to run on a variety of cluster architectures. For applications designed to distribute the computational workload, computations can be run in parallel for large parametric sweeps or large models. A COMSOL Server™ license is enabled out-of-the-box for an unlimited number of cores and compute nodes without extra licensing fees.

Wednesday, March 3, 2021

How to make your internet work faster at home. Wi-fi or cable?

The quality of real-time video events, such as interactive music masters courses, will improve at Columbia University as a result of a new, high-speed network known as the New York Dark Fiber Network. This is just one example of the benefits of the private network for Columbia and other research, education and medical institutions in New York, which now have state-of-the-art connections to each other and to the Internet and the Internet 2.

In addition to creating faster and more reliable connections, the dark fiber network increases the efficiency and flexibility of institutions' computer networks. In Colombia, the new technology essentially doubles the capacity of its commercial internet service from 155 Mbps (megabits per second) to 300 Mbps; improves its flexibility in the future acquisition of network technology; and provides greater security of network connections in the event of critical infrastructure damage. The network is called "closed fibers" because no telecommunications operator "illuminates" it with its equipment; instead; Columbia "lights up" its fiber yarns with its own equipment, just as it does for fiber cables on nearby and nearby campuses.

The network was built in the last two years by a consortium of institutions in the area, all members of New York, based in NYSERNet, the state education and research network in New York. The Presbyterian Hospital in Columbia and New York played an important role in the project. Other founding members include the American Museum of Natural History, City University of New York, Mt. Sinai-NYU Medical Center and Weill Cornell Medical College. Additional institutions are expected to join to take advantage of the higher service, and the project has expanded to the Bronx. Finally, similar services may include other cities and Long Island.

The network has already benefited Columbia by connecting Columbia University Medical Center (CUMC) in Washington Heights and several CUMC and New York Presbyterian Hospital locations throughout Manhattan to each other and the other participating institutions, as well as the Internet dark fiber cost.

In addition, unlike telecommunications carrier services, which have costs that vary with speed, the price of fiber is fixed, while its capacity is virtually unlimited. "Owning fiber strings will allow us to choose and afford new network technologies as they grow, rather than wait and then pay someone else for better networks," said Alan Crosswell, director of the Columbia Network and Computing systems, adding that the new network allows the University to have the flexibility to implement "future fiber-based technologies that have not yet been developed."

Tuesday, March 2, 2021

F5 Network Certification Guide: Overview and Career Pathways

Many of us had to come to terms when an F1 or F2 tornado passed through the area, smoothing out most things in its path, but F5? The most powerful tornado speed on the Fujita scale was also the inspiration for the name F5 Labs, which appeared in 1996 and is now known as F5 Networks. Initially offering its products for load balancing BIG IP servers, F5 has expanded to provide an optimization technology called Application Delivery Network (ADN). ADN stores servers, network resources, and the like in data centers and in the cloud around the world.

Headquartered in Seattle, Washington, F5 serves virtually every Fortune 50 company, as well as a long list of mid-sized and corporate organizations. Over the years, the company's revenues have grown significantly, with annual revenues exceeding $ 2 billion. F5's growth continued in 2017 as revenues exceeded $ 2.1 billion. The continued growth has attracted the attention of Wall Street and potential investors as well as companies looking for a profitable acquisition or merger. In fact, F5 Networks seems to be looking at offers from potential buyers.

The F5 Networks certification program is small and focused. It offers IT credentials that help prepare people to develop, deploy, and support company products and solutions. The three certifications in the F5 program include the following items: f5 big ip

F5 Certified BIG-IP Administrator (F5-CA)

F5 Certified Technology Specialist (F5-CTS)

F5 Certified Solutions Expert (F5-CSE)

To get started, F5 certification candidates must register with the F5 Credential Management System (F5-CMS), submit an applicant agreement form, and complete a nondisclosure agreement. Once registered, the tutorial for the desired certification becomes available through the company's system, although tutorials are also available outside of F5-CMS as you will learn later in this article. All F5 certification exams cost $ 135 and are available through Pearson VUE.

F5 Certified BIG-IP Administrator (F5-CA)

An F5 certified BIG-IP administrator can manage Application Delivery Networks (ADNs) and perform routine management and troubleshooting of F5 Traffic Management Operating System (TMOS) devices. F5-CA certification requires two exams:

Exam 101 - Application Delivery Fundamentals

Exam 201 - TMOS Administration

These exams must be taken in numerical order as the TMOS Administration exam is a prerequisite. Before taking the exam, F5 offers candidates a solid understanding of networking concepts and protocols, traffic shaping concepts and TMOS components, and how to work with virtual servers.

F5 Certified Technology Specialist (F5-CTS)

F5 Certified Technician credentials come in four flavors, focusing on traffic management, DNS, security and access policies. First LTM exams (Exam 301a) for DNS, ASM, and APM specialist credentials take Exam 201 - TMOS Administration as a prerequisite. The second LTM exam - LTM Specialist: Maintenance and Troubleshooting (Exam 301b) - requires prior completion of the LTM Specialist: Architect, Configuring, and Deploying Exam 301a. To obtain the F5-CTS, candidates must pass one or two exams, depending on the specialty chosen:

Local Traffic Manager (LTM) : LTM credentials recognize professionals who work with advanced F5 products from design to implementation and maintenance and understand how to integrate LTM into existing networks. Two exams are required:

Exam 301a - BIG-IP LTM Specialist: Architect, Configuration, and Deployment

Exam 301b - BIG-IP LTM Specialist: Maintenance and Troubleshooting

Domain Name Server (DNS): DNS credentials are intended for application delivery architects and application delivery engineers working with BIG-IP DNS. Only one exam is required to obtain this certification:

Exam 302 - BIG-IP DNS Specialist

Application Security Manager (ASM) : ASM develops, implements, and maintains ASM to secure application delivery networks. Applicants should understand the interactivity between ASM and web applications, troubleshooting techniques, and the integration method. Only one exam required:

Exam 303 - BIG-IP ASM Specialist

Access Policy Manager (APM) . An APM-authorized person manages the application delivery networks and technologies that run on the F5 TMOS operating system. Applicants should understand remote access, authentication and authorization, and how to install, maintain, and update APM. To qualify for APM, candidates must pass one exam:

Exam 304 - BIG-IP APM Specialist

Anyone with the desire (and time) to complete all four CTS exams should seriously consider moving to the F5 Certification - F5 Solutions Expert.

Monday, March 1, 2021

Linux System Administrator (Asterisk)

Lanet network is one of the largest Internet and cable TV providers in Ukraine.

We are now looking for a Linux system administrator .

The work is challenging, creative and interesting. It combines elements of system administration of Linux OS and Asterisk PBX, as well as programming in Python (PBX).


Duties: linux jobs near me

support and development of a geographically distributed enterprise telephony system and a contact center based on Asterisk (SIP, PRI, GSM);

support and development of related services (self-written FastAGI-server, AMI, ARI, auto-dialing scripts, control system for GSM-gateways, etc.);

analytics and troubleshooting of SIP traffic;

support and development of self-written front-ends and other add-ons over the PBX (operator's workstation, call analysis and contact center management tools, etc.).


Requirements:

2+ years of Linux experience;

2+ years experience with pure Asterisk PBX (without FreePBX and other front-ends);

knowledge of AEL, experience in developing comprehensive recruitment plans; knowledge of RTP / SRTP, SIP TLS;

confident knowledge of RedHat Linux (and analogues), working in the console, system utilities and services, building software from source codes;

experience working with MySQL at the query level;

experience with GSM, FXO / FXS gateways;

basic knowledge of PHP, JS (JQuery), HTML, CSS, Python will be a huge plus;

English at the level of understanding technical documentation;

ability to document your work.