Java 7 concurrency Hardware trends drive programming idioms Languages, libraries, and frameworks shape the way we write programs. Even though Alonzo Church showed in 1934 that all the known computational frameworks were equivalent in the set of programs they could represent, the set of programs that real programmers actually write is shaped by the idioms that the programming model — driven by languages, libraries, and frameworks — makes easy to express. In turn, the dominant hardware platforms of the day shape the way we create languages, libraries, and frameworks. The Java language has had support for threads and concurrency from day 1; the language includes synchronization primitives such as synchronized and volatile, and the class library includes classes such as Thread. Going forward, the hardware trend is clear; Moore's Law will not be delivering higher clock rates, but instead delivering more cores per chip. Exposing finer-grained parallelism Divide and conquer Listing 1. Fork-join Listing 2. Table 1.
Jug: A Task-Based Parallelization Framework — Jug 2.2.1 documentation Short Example¶ Here is a one minute example. Save the following to a file called primes.py: from jug import TaskGenerator @TaskGeneratordef is_prime(n): from time import sleep # Sleep for 1 second, this runs too fast and is not a good demo sleep(1.) for j in range(2, n - 1): if (n % j) == 0: return False return True @TaskGeneratordef count_primes(ps): return sum(ps) @TaskGeneratordef write_output(n): with open('output.txt', 'wt') as output: output.write("Found {0} primes <= 100. Of course, this is only for didactical purposes, normally you would use a better method. Now type jug status primes.py to get: Waiting Ready Finished Running Task name--------------------------------------------------------------------------- 1 0 0 0 primes.count_primes 0 99 0 0 primes.is_prime 1 0 0 0 primes.write_output........................................................................... 2 99 0 0 Total Now you have 32 tasks finished, 4 running, and 63 still ready.
Patterns for Concurrent, Parallel, and Distributed Systems Douglas C. Schmidt, ``Wrapper Facade: A Structural Pattern for Encapsulating Functions within Classes,'' C++ Report, SIGS, Vol. 11, No 2, February, 1999. This paper describes the Wrapper Facade pattern. The intent of this pattern is to encapsulate low-level, stand-alone functions with object-oriented (OO) class interfaces. Common examples of the Wrapper Facade pattern are C++ wrappers for native OS C APIs, such as sockets or pthreads. Programming directly to these native OS C APIs makes networking applications verbose, non-robust, non-portable, and hard to maintain. Distributed computing in Python with multiprocessing - Eli Bendersky's website In the previous post, I discussed how the multiprocessing package can be used to run CPU-bound computation tasks in parallel on a multi-core machine. But the utility of multiprocessing doesn't end here. It can also be used to run computations distributed over several machines. This enters the exciting domain of distributed computing. There are many tools available for addressing various aspects of this domain, but here I want to specifically focus on what Python offers right in the standard library, with multiprocessing. The part of the package that makes distributed computing possible is called "managers". The documentation of multiprocessing.managers leaves something to be desired. Managers provide a way to create data which can be shared between different processes. Which is somewhat confusing, since multiprocessing already has synchronization primitives available without using managers (for example Value and Lock). For two main reasons: What this code does is: This manager is simpler.
10 Ideas published in 1991 Prelude "Show me." John held up the chalk, holding it by the top, the bottom pointed at his feet. Three months earlier, in my first quarter as graduate student at Stanford, in the Lab at the top of the hill, just before a volleyball game, I asked John McCarthy - the John McCarthy - whether I could have an office at the Lab and be supported by it. "Sure," if I TAed 206, the Lisp course. Some call his classes "Uncle John’s Mystery Hour," in which John McCarthy can and will lecture on the last thing he thought of before rushing late through the door and down the stairs to the front of the lecture hall. But this class started out like anything but a mystery hour: John was reviewing the answers to the midterm. I can hear the worried thoughts behind me: "Er, but multiplying two polynomials seems so easy. John: "It turns out you need to pass global information, and the control structure is not regular. So now you’re thinking that the problem was stated funny. "Nah. Introduction
MATTHEW GOODWIN: The 14 million voters who shared Boris Johnson's vision for a post-Brexit Britain - Dad why has there got to be any change of direction - cant the new leader just carry on It was inevitable Boris Johnson’s resignation would bring out the very worst side of his opponents. From the megalomaniac Dominic Cummings to arch-Remainers, they made little attempt to hide their glee at having finally brought down a Prime Minister they loathe. However, the 14 million people who, less than three years ago, voted Conservative and put Boris Johnson into power, will feel very differently. Unlike the gloating commentariat, many will feel disillusioned, disappointed and demoralised. Because for them, despite his faults, a Johnson-led Government represented a rare chance to push forward a fresh vision of the country – one that’s good for them rather than for the sort of people who dominate the corridors of power. The 14 million certainly wanted to Get Brexit Done and to demolish Jeremy Corbyn’s radical Left. It was inevitable Boris Johnson’s resignation would bring out the very worst side of his opponents They want to Say No to the EU and the courts in Brussels and Strasbourg.
GHC/Data Parallel Haskell 1 Data Parallel Haskell Searching for Parallel Haskell? DPH is a fantastic effort, but it's not the only way to do parallelism in Haskell. Try the Parallel Haskell portal for a more general view. Data Parallel Haskell is the codename for an extension to the Glasgow Haskell Compiler and its libraries to support nested data parallelism with a focus to utilise multicore CPUs. This is the performance of a dot product of two vectors of 10 million doubles each using Data Parallel Haskell. 1.1 Project status Data Parallel Haskell (DPH) is available as an add-on for GHC 7.4 in the form of a few separate cabal package. The current implementation should work well for code with nested parallelism, where the depth of nesting is statically fixed or no user-defined nested-parallel datatypes are used. DPH focuses on irregular data parallelism. Note: This page describes version 0.6.* of the DPH libraries. Disclaimer: Data Parallel Haskell is very much work in progress. 1.2 Where to get it 1.3 Overview
Bambelaa! Toilet Paper Replacement Roll Holder Toilet Paper Rolls Holder Approx. 42 x 14.5 cm : Amazon.co.uk: DIY & Tools Select Your Cookie Preferences We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice. We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. If you agree, we’ll also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. This includes using first- and third-party cookies, which store or access standard device information such as a unique identifier. Sorry, there was a problem saving your cookie preferences.
| Moretonhampstead, Newton Abbot, Devon, TQ13 8SB | Property for sale Hayne Old Manor is a remarkable Grade II listed Georgian country house in a truly rural setting within its own extensive acreage. The house proudly stands in an elevated position with spectacular unimpeded views over its beautiful gardens and grounds, ornamental lake, Dartmoor's rolling countryside; and in the distance to the north, the picturesque village of Moretonhampstead and its pretty church. The house is hidden until its handsome cream stucco façade is revealed as one approaches via the granite walled drive that meanders through its own parkland displaying the lake and the grounds beyond. Boasting large floor to ceiling windows with thin sash bars and original shutters, the house even on a dull day is bathed in light. In keeping with its era, all the rooms benefit from high ceilings and lovely proportions making it perfect for entertaining. One of the particular features of the house is the easy flow of rooms from the wide hallway which is lit by a domed sky lantern.
Gps tracking on food to stop theft . yet we went through a depression and no one did that. immigrants again. dm and all media are working on immigrant pr 24/7/365 A major supermarket is tracking £5 rump steaks by satellite to deter thieves as the UK's largest dairy firm warned of shortages of milk and butter with more price rises on the way with a large Lurpak pushing £10. A Co-op in West Bridgford outside Nottingham has put some 'high value' meat items in GPS tracked security cases and blocks of cheese have also been security tagged, a shopper said this weekend. Customers in Bournemouth, Dorset, have reported the same satellite tracking security packs on pork loin joints and other supermarkets have tagged staples such as butter. The retailer said today the security measures are not related to the cost of living and are to do with theft - although experts say the rising cost of food influences shoplifting rates. It came as Arla Foods, the maker of Lurpak and Cravendale milk, said prices will continue to spike because of the rising cost of feed, fuel and fertiliser and continuing problems with recruitment.
amazon.co Select Your Cookie Preferences We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice. We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. If you agree, we’ll also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. This includes using first- and third-party cookies, which store or access standard device information such as a unique identifier. Sorry, there was a problem saving your cookie preferences. Public Rights of Way Welcome to the map of public rights of way in Northumberland. There are over 3200 miles of public rights of way in Northumberland. They are a great resource to help you exercise, relax or enjoy the outstanding quality of the Northumberland countryside and towns and villages. This map will help you to make the most of the public rights of way. It contains information on every recorded public right of way in the County on an easy to use interactive map. It shows routes which can be used by walkers (public footpaths, bridleways and byways) and horseriders and cyclists too (public bridleways and byways). You can use the map to plan your countryside visit, discover information about public rights of way in your locality and report problems with the rights of way network to the Council. If you are going to use the map for conveyance or other legal purposes please contact the Council first. Map and register of applications to amend the Definitive Map Map and register of path closures
NHS green light for eczema pill that can clear skin in a week Three new medications that can fight severe eczema have been given the green light for NHS use. The drugs will be offered to patients who don’t respond to standard treatments or have to quit them due to side effects. Experts say the new treatments – abrocitinib, upadacitinib and tralokinumab – have an almost immediate impact on symptoms. Dr Padma Mohandas, a consultant dermatologist at Barts Health NHS Trust in London, said: ‘Eczema is a common problem but in some cases it’s not easy to treat. Jack Ransom, 27, from South London, had suffered from atopic eczema since he was three months old. Eczema, also called atopic dermatitis, affects more than six million people in the UK ‘With these new drugs we can offer them hope that their skin will get better, which is life-changing.’ Eczema, also called atopic dermatitis, affects more than six million people in the UK. The condition causes areas of skin to become dry, itchy and prone to cracking and bleeding.