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Re-read Saturday, Tame you Work Flow Week 4: Chapter 4: Utility of Flawed Mental Models

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3 years ago

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Tame your Work Flow

This week we tackle Chapter 4 of Tame your Work Flow,  The chapter is titled “Utility of Flawed Mental Models.” The goal of the chapter is to make sure we understand why reducing wait time makes sense and why that reduction has an impact on delivery.  

The premise of the chapter is set up with the statement:

According to Little’s Law, as the Flow Time at the denominator is decreased Throughput will increase. The contradiction here is that – from a Theory of Constraints (ToC) perspective – a system simply cannot deliver any more Throughput than its Constraint. Since we have not reduced Touch Time, the Constraint cannot have increased its Capacity in any way.

The authors point out that the two models at the heart of the book seem to conflict at a very basic level. Using the paradigm of the ToC would push us to find the constraint, exploit (use it to its fullest capacity) and then to elevate (increase the capacity). These types of changes would generate a focus on touch time (changing how we do the work).  Daniel and Steve use a set of mental experiments to show how starting with getting rid of wait time generates improved throughput without substantial investment and creates a stable environment of making touch time changes later. 

Attacking wait time does not directly impact throughput because it has no direct effect on the constraint. The question then is why does throughput apparently improve when we improve flow efficiency by removing wait time. On page 72, the authors state, “When Flow Efficiency is low, the system ordinarily performs at a rate that is less than that of the nominal Capacity of the Constraint.” This is really the crux of why reducing wait time has an impact.  Simply put, the constraint is underutilized — it has spare capacity. 

In the mental experiments in the book, Daniel and Steve show how reducing wait time squeezes out multitasking which reduces the context switching, and unneeded coordination and synchronization which uses up the spare captivity of the constraint yielding more output. This is exploiting the constraint, even though, at least at this point, we have spent no time trying to identify the constraint. As we noted in Chapter 3, reducing wait time does not require any substantial investments in changing how work is done, improved tools, or investment in additional people (queue the Dire Straits song “Money for Nothing). 

After we have exhausted wait time, the focus of the book shifts to touch time which means finding the constraint and jumping into the Theory of Constraints.  

Catch up on previous entries

Week 1: Logistics and Front Matter – https://bit.ly/2LWJ3EY

Week 2: Prologue (The Story of Herbie) – https://bit.ly/3h4zmTi

Week 3: Explicit Mental Models – https://bit.ly/2UJUZyN

Week 4: Flow Efficiency, Little’s Law and

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By: tcagley
Title: Re-read Saturday, Tame you Work Flow Week 4: Chapter 4: Utility of Flawed Mental Models
Sourced From: tcagley.wordpress.com/2020/07/11/re-read-saturday-tame-you-work-flow-week-4-chapter-4-utility-of-flawed-mental-models/
Published Date: Sat, 11 Jul 2020 23:55:45 +0000

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NVIDIA GeForce RTX 30 Gaming Laptops Powered Massive Cryptocurrency Mining Farm Spotted in China, Over Hundreds of Ampere Laptops

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3 years ago

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February 11, 2021

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Last week, it was reported how cryptocurrency miners are rushing after NVIDIA GeForce RTX 30 Gaming Laptops to earn that sweet digital currency profits. Well, now a video tour of one of the mining farms has surfaced showcasing several hundred gaming laptops being used to mine the cryptocurrencies.

Several Hundred NVIDIA GeForce RTX 30 Gaming Laptops Spotted In Chinese Cryptocurrency Mining Farm Video Tour

Earlier, we only got to see a glimpse of the cryptocurrency mining farm but a brand new video has surfaced which shows the complete scale of the setup. The setup is based in China but the user has not mentioned the location for obvious reasons. As you can tell, the mining farm is set up with and utilizes NVIDIA GeForce RTX 30 Gaming laptops from the Chinese manufacturer, Hasse.

The Hasse laptop is based on the GeForce RTX 3060 mobility GPU. The GeForce RTX 3060 laptop solution is definitely not similar to the desktop variant which offers much better specifications and doesn’t come at a lower price either. According to NVIDIA themselves, the RTX 3060 laptops start at $999 US & the miners can save a penny by purchasing in bulk but they end up paying at least $600 US more for the laptop variant. Plus, they also end up with unnecessary hardware that the laptops feature. At the same time, the laptop variants do feature reduced TGPs which might save electricity costs & offer higher cryptocurrency mining rates.

pic.twitter.com/XJrfH9Fx7V

— 포시포시 (@harukaze5719) February 9, 2021

What’s interesting here is that the user has bought these laptops in a bulk order which means that either the retailer, distributor, or the manufacturer itself is openly supporting cryptocurrency miners over actual customers such as gamers which these laptops are primarily designed for. The selling party could be taking advantage of crypto miners by selling these at scalped prices to earn a profit.

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By: Hassan Mujtaba
Title: NVIDIA GeForce RTX 30 Gaming Laptops Powered Massive Cryptocurrency Mining Farm Spotted in China, Over Hundreds of Ampere Laptops
Sourced From: wccftech.com/nvidia-geforce-rtx-30-gaming-laptops-powered-massive-cryptocurrency-mining-farm-spotted-in-china-over-hundreds-of-ampere-laptops/
Published Date: Thu, 11 Feb 2021 04:17:52 +0000

Did you miss our previous article…
https://getinvestmentadvise.com/tech/intel-3rd-gen-xeon-ice-lake-sp-cpu-rumors-10nm-with-up-to-40-cores-8-channel-ddr4-3200-64-pcie-gen-4-0-lanes-max-270w-tdp/

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Intel 3rd Gen Xeon Ice Lake-SP CPU Rumors – 10nm With Up To 40 Cores, 8-Channel DDR4-3200, 64 PCIe Gen 4.0 Lanes, Max 270W TDP

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3 years ago

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February 11, 2021

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A couple of rumors regarding Intel’s Ice Lake-SP Xeon server CPUs have surfaced over the web, mostly from known leaker, Momomo_US. The information consists of specifications, configs & power ratings of several SKUs that will be part of the 3rd Gen Xeon Scalable processor family.

Intel 3rd Gen Ice Lake-SP Xeon CPU Rumors Point Out Up To 40 Cores, 270W TDPs & Brand New Core Architecture

Starting off with the details, Intel’s 3rd Gen Ice Lake-SP Xeon CPUs will be based on the 10nm+ process node and utilize the Sunny Cove core architecture. The Intel Sunny Cove x86 architecture has been around since 2019 and was first featured on Intel’s 10th Gen Ice Lake processors for the notebook segment. Intel has since moved over to Tiger Lake which is based on the Willow Cove x86 architecture and makes use of the 10nm SuperFin process node.

Some of the major upgrades that Intel’s 10nm+ for Ice Lake-SP Xeon CPU will deliver include:

2.7x density scaling vs 14nmSelf-aligned Quad-PatterningContact Over Active GateCobalt

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By: Hassan Mujtaba
Title: Intel 3rd Gen Xeon Ice Lake-SP CPU Rumors – 10nm With Up To 40 Cores, 8-Channel DDR4-3200, 64 PCIe Gen 4.0 Lanes, Max 270W TDP
Sourced From: wccftech.com/intel-3rd-gen-xeon-ice-lake-sp-cpu-rumors-10nm-up-to-40-cores-270w-tdp/
Published Date: Thu, 11 Feb 2021 10:02:51 +0000

Did you miss our previous article…
https://getinvestmentadvise.com/tech/intels-raja-koduri-teases-xe-hpg-enthusiast-gaming-graphics-cards-in-action-within-3dmark-mesh-shader-test-launch-imminent/

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Intel’s Raja Koduri Teases Xe HPG Enthusiast Gaming Graphics Cards In Action Within 3DMark Mesh Shader Test, Launch Imminent?

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3 years ago

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February 11, 2021

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Intel’s Senior Vice President, Raja Koduri, has been dropping some major bombs on his Twitter feed for a while now. The most recent one being the Xe HPC chip shot which is an engineering marvel but it looks like Raja has switched gears and now dropped a teaser of Intel’s first gaming discrete graphics cards, the Xe HPG.

Intel Teases Xe HPG Enthusiast Gaming Graphics Cards, Running 3DMark’s Upcoming Mash Shader Feature

It’s been some time since we last heard about Intel’s Xe HPG (High-Performance Gaming) discrete GPUs or graphics cards. Intel’s main focus has been Xe-LP and they also dive in deeper within the tech that Xe HPC has to offer considering it’s their biggest chip design to date and the flagship Xe product. But the Xe HPG is where the gaming community is more focused at and we have got the first teaser of Intel’s discrete graphics cards based on the HPG GPUs running in action.

Xe HPG mesh shading in action, with the UL 3DMark Mesh Shader Feature test that is coming out soon pic.twitter.com/fnYeWoM08c

— Raja Koduri (@Rajaontheedge) February 10, 2021

The teaser from Raja shows an undisclosed Intel Xe HPG GPU based discrete graphics card running the UL 3DMark Mesh Shader Feature test. This test is coming out soon and will be integrated within the 3DMark test suite. Mesh Shader is one of the major features introduced within DirectX 12 Ultimate API back in 2020. The feature is supported by NVIDIA’s Turing, Ampere, and AMD’s RDNA 2 graphics architectures. Based on this tweet, Intel will also be adding Mesh Shaders support on its Xe-HPG class discrete GPUs.

The technology helps to dramatically improve performance and image quality when rendering a scene with a substantial number of very complex objects. Take for instance a very complex & triangle-heavy mesh and what Mesh Shaders would essentially do is segment it into smaller meshlets. Each meshlet ideally optimizes the vertex re-use within it. Using the new hardware stages and this segmentation scheme, devs can render more geometry

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By: Hassan Mujtaba
Title: Intel’s Raja Koduri Teases Xe HPG Enthusiast Gaming Graphics Cards In Action Within 3DMark Mesh Shader Test, Launch Imminent?
Sourced From: wccftech.com/intels-raja-koduri-teases-xe-hpg-enthusiast-gaming-graphics-cards-in-action-3dmark-mesh-shader-test/
Published Date: Wed, 10 Feb 2021 07:21:19 +0000

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