Tim Greene

Author Archives: Tim Greene

Report: Cloud services can be made more resilient but at a premium

Enterprises have options for making cloud services more resilient but at a price premium of up to 111% over the base price of services that offer no protection, according to a study by Uptime Institute.The extra cost can mean faster recovery times, better compensation from service-level agreements when there are outages, and improved “implied reliability,” according to Uptime’s report “Public cloud costs versus resiliency: stateless applications”. [ Get regularly scheduled insights by signing up for Network World newsletters. ] The institute modeled three scenarios for improving the resiliency of a simple WordPress website that was, at peak, required to deliver webpages within three seconds of requests. The researchers generated a Python simulation that varied bandwidth and virtual-machine demands to analyze their effects on costs.To read this article in full, please click here

The ‘Cisco’ gear you bought from these companies could be counterfeit

Business entities in Florida and New Jersey, plus 25 storefronts on Amazon and eBay, sold old Cisco gear that had been cosmetically altered to seem like new, more advanced models, part of a conspiracy going back eight years.The counterfeit-distribution operation was selling the networking devices for a tenth what it would cost if they were legitimate, according to the US Department of Justice. It estimated the conspiracy took in more than $100 million in revenue, and that—if the equipment had been what it was purported to be—would have retailed for more than $1 billion. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

World’s first exascale supercompuer is the world’s fastest

The first true exascale supercomputer, Frontier, is now the fastest in the world, toppling Fugaku, which held the title for the past two years, according to the latest TOPP500 list of the best performing supercomputers.An exascale computer is one that can perform 1018 (one quintillion) floating point operations per second (1 exaFLOPS), and Frontier, installed at Oak Ridge National Laboratory in Tennessee, weighed in at 1.12 exaFLOPS.Frontier also captured the title of most energy efficient supercomputer, generating 62.68 GFLOP per watt.Frontier’s speed bumps down Fugaku at the RIKEN Center for Computational Science (R-CCS) in Kobe, Japan, from number 1 on the TOPP500 list last fall to number 2 now. Fugaku scored 442 peta FLOPS (PFLOPS) on the  High Performance Linpack (HPL) benchmark, which measures how well systems solve a dense system of linear equations.To read this article in full, please click here

World’s first exascale supercompuer is the world’s fastest

The first true exascale supercomputer, Frontier, is now the fastest in the world, toppling Fugaku, which held the title for the past two years, according to the latest TOPP500 list of the best performing supercomputers.An exascale computer is one that can perform 1018 (one quintillion) floating point operations per second (1 exaFLOPS), and Frontier, installed at Oak Ridge National Laboratory in Tennessee, weighed in at 1.12 exaFLOPS.Frontier also captured the title of most energy efficient supercomputer, generating 62.68 GFLOP per watt.Frontier’s speed bumps down Fugaku at the RIKEN Center for Computational Science (R-CCS) in Kobe, Japan, from number 1 on the TOPP500 list last fall to number 2 now. Fugaku scored 442 peta FLOPS (PFLOPS) on the  High Performance Linpack (HPL) benchmark, which measures how well systems solve a dense system of linear equations.To read this article in full, please click here

World’s first exascale supercomputer is the world’s fastest

The first true exascale supercomputer, Frontier, is now the fastest in the world, toppling Fugaku, which held the title for the past two years, according to the latest TOPP500 list of the best performing supercomputers.An exascale computer is one that can perform 1018 (one quintillion) floating point operations per second (1 exaFLOPS), and Frontier, installed at Oak Ridge National Laboratory in Tennessee, weighed in at 1.12 exaFLOPS. [ Get regularly scheduled insights by signing up for Network World newsletters. ] Frontier also captured the title of most energy efficient supercomputer, generating 62.68 GFLOP per watt.To read this article in full, please click here

World’s first exascale supercomputer is the world’s fastest

The first true exascale supercomputer, Frontier, is now the fastest in the world, toppling Fugaku, which held the title for the past two years, according to the latest TOPP500 list of the best performing supercomputers.An exascale computer is one that can perform 1018 (one quintillion) floating point operations per second (1 exaFLOPS), and Frontier, installed at Oak Ridge National Laboratory in Tennessee, weighed in at 1.12 exaFLOPS. [ Get regularly scheduled insights by signing up for Network World newsletters. ] Frontier also captured the title of most energy efficient supercomputer, generating 62.68 GFLOP per watt.To read this article in full, please click here

Facebook outage was a series of unfortunate events

Facebook says the root cause of its outage Monday involved a routine maintenance job gone awry that resulted in rendering its DNS servers unavailable, but first the entire Facebook backbone network had crashed.To make matters worse, the loss of DNS made it impossible for Facebook engineers to remotely access the devices they needed to in order to bring the network back up, so they had to go into the data centers to manually restart systems.To read this article in full, please click here

Facebook outage was a series of unfortunate events

Facebook says the root cause of its outage Monday involved a routine maintenance job gone awry that resulted in rendering its DNS servers unavailable, but first the entire Facebook backbone network had crashed.To make matters worse, the loss of DNS made it impossible for Facebook engineers to remotely access the devices they needed to in order to bring the network back up, so they had to go into the data centers to manually restart systems.To read this article in full, please click here

Fugaku still reigns as the world’s fastest supercomputer

Fugaku, the supercomputer built by Fujitsu, remains at number one in the TOP500 list of the fastest supercomputers in the world, where it is still three times faster than the nearest competition.The contest for the fastest remains tight, with only one new entry into the top 10 on the latest list—Perlmutter, at the National Energy Research Scientific Computing (NERSC) Center at Lawrence Berkeley National Laboratory, which is part of the US Department of Energy. It joins the list at number five and bumps down numbers six through 10 from the previous list published in November 2020.(A system called Dammam-7 dropped off the top 10.)To read this article in full, please click here

Fugaku still reigns as the world’s fastest supercomputer

Fugaku, the supercomputer built by Fujitsu, remains at number one in the TOP500 list of the fastest supercomputers in the world, where it is still three times faster than the nearest competition.The contest for the fastest remains tight, with only one new entry into the top 10 on the latest list—Perlmutter, at the National Energy Research Scientific Computing (NERSC) Center at Lawrence Berkeley National Laboratory, which is part of the US Department of Energy. It joins the list at number five and bumps down numbers six through 10 from the previous list published in November 2020.(A system called Dammam-7 dropped off the top 10.)To read this article in full, please click here

Center for Internet Security: 18 security controls you need

The Center for Internet Security has updated its set of safeguards for warding off the five most common types of attacks facing enterprise networks—web-application hacking, insider and privilege misuse, malware, ransomware, and targeted intrusions.In issuing its CIS Controls V8 this month, the organization sought to present practical and specific actions businesses can take to protect their networks and data. These range from making an inventory of enterprise assets to account management to auditing logs.In part the new version was needed to address changes to how businesses operate since V7 was issued three years ago, and those changes guided the work. “Movement to cloud-based computing, virtualization, mobility, outsourcing, work-from-home, and changing attacker tactics have been central in every discussion,” the new controls document says.To read this article in full, please click here

Center for Internet Security: 18 security controls you need

The Center for Internet Security has updated its set of safeguards for warding off the five most common types of attacks facing enterprise networks—web-application hacking, insider and privilege misuse, malware, ransomware, and targeted intrusions.In issuing its CIS Controls V8 this month, the organization sought to present practical and specific actions businesses can take to protect their networks and data. These range from making an inventory of enterprise assets to account management to auditing logs.In part the new version was needed to address changes to how businesses operate since V7 was issued three years ago, and those changes guided the work. “Movement to cloud-based computing, virtualization, mobility, outsourcing, work-from-home, and changing attacker tactics have been central in every discussion,” the new controls document says.To read this article in full, please click here

World’s fastest supercomputers: Fugaku is still No. 1 at 3X the speed of No. 2

The latest semiannual TOP500 list of the world's fastest supercomputers is topped by Fugaku, the same machine that won in June. Built by Fujitsu, Fugaku is three times as fast as its nearest rival.TOP500 says that competition for its list seems to be lessening, with the full list of 500 systems having the fewest number of new entries since the organization started its tracking. The list is updated every June and November and has tracked the development of supercomputer performance and architecture since 1993. Nevertheless, two brand new systems managed to break into the top 10 list on their first try.To read this article in full, please click here

World’s fastest supercomputers: Fugaku is still No. 1 at 3X the speed of No. 2

The latest semiannual TOP500 list of the world's fastest supercomputers is topped by Fugaku, the same machine that won in June. Built by Fujitsu, Fugaku is three times as fast as its nearest rival.TOP500 says that competition for its list seems to be lessening, with the full list of 500 systems having the fewest number of new entries since the organization started its tracking. The list is updated every June and November and has tracked the development of supercomputer performance and architecture since 1993. Nevertheless, two brand new systems managed to break into the top 10 list on their first try.To read this article in full, please click here

Weekly internet health check, US and worldwide

The reliability of services delivered by ISPs, cloud providers and conferencing services (a.k.a. unified communications-as-a-service (UCaaS)) is an indication of how well served businesses are via the internet.ThousandEyes is monitoring how these providers are handling the performance challenges they face. It will provide Network World a roundup of interesting events of the week in the delivery of these services, and Network World will provide a summary here. Stop back next week for another update, and see more details here. Get regularly scheduled insights by signing up for Network World newsletters To read this article in full, please click here

COVID-19: Weekly internet health check

As COVID-19 continues to spread, forcing employees to work from home, the services of ISPs, cloud providers and conferencing services a.k.a. unified communications as a service (UCaaS) providers are experiencing increased traffic.ThousandEyes is monitoring how these increases affect outages and the performance challenges these providers undergo. It will provide Network World a roundup of interesting events of the week in the delivery of these services, and Network World will provide a summary here. Stop back next week for another update, and see more details here.To read this article in full, please click here

How networking pros can help make better IT buying decisions

IT purchasing teams have a dismal track record, in part because they face a number of roadblocks. Undue influence of a few team members who only check in occasionally. Failure to include a diversity of stakeholders. Paying too much attention to what vendors say about their own products. Not giving security its due. Tech Spotlight: IT Leadership IT leadership lessons from CIO 100 Award winners (CIO) How to sustain IT workplace culture — without the workplace (Computerworld) The CISO’s newest responsibility: Building trust (CSO) How to mandate agility in software development, operations, and data science (InfoWorld) Tech spotlight: IT leadership lessons from the front lines in challenging times [PDF] So what can IT pros do to improve things and ensure successful purchases when they're members of buying teams? Plenty, according to Gartner.To read this article in full, please click here

COVID-19: Weekly health check of ISPs, cloud providers and conferencing services

As COVID-19 continues to spread, forcing employees to work from home, the services of ISPs, cloud providers and conferencing services a.k.a. unified communications as a service (UCaaS) providers are experiencing increased traffic.ThousandEyes is monitoring how these increases affect outages and the performance challenges these providers undergo. It will provide Network World a roundup of interesting events of the week in the delivery of these services, and Network World will provide a summary here. Stop back next week for another update, and see more details here.To read this article in full, please click here

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