Programming for intel xeon processors and intel xeon phi coprocessors introduction intel xeon phi coprocessors are designed to extend the reach of applications that have demonstrated the ability to fully utilize the scaling capabilities of intel xeon processorbased. One exciting new technology for hpc is the intel xeon phi coprocessor also known as the mic. It also offers a powerful programming interface c api to gather information about the hardware, bind processes. Based on an actual but confidential customer example. The press release from sc12 has further information, and future newsletters will cover the release. Intel xeon phi coprocessor system software developers. Intel xeon phi coprocessor high performance programming knights landing edition is a practical guide to code development for intels xeon phi coprocessor. Migrating offloading software to intel xeon phi processor. Illustrative example untuned performance on intel xeon untuned performance on intel xeon phi yeah. The numbering is invariant as long as cards are not physically moved around.
Jan 03, 20 intel cluster studio xe 20 with intel mpi library 4. Building a native application is a fast way to get existing software running with minimal code changes. Intel xeon phi coprocessor developer zones programming tab 32 identifies models and tools for programming, debugging, and optimizing code for the intel xeon phi coprocessor. So its extremely recommended to use intel compiler for knc. Using gcc for xeon phi knc programming is definitely not perfect idea. Programming the xeon phi xsede course display tacc. For fortran programmers, use openmp, do concurrent and mpi. It is intended for use in supercomputers, servers, and highend workstations. The same program source code written for intel mic products can be compiled and run on a standard intel xeon processor.
Intel xeon phi processor software also contains specific. Run instances of the mpi application on different mixed nodes. Sep 29, 2014 walk you through the intel manycore platform software stack intel mpss installation. Programming the xeon phi xsede course display tacc user. Programming, compiling and optimizing for the intel xeon. Intel xeon phi processor software is a set of software and utilities that enable functionalities of the intel xeon phi processor. Native applications running on intel xeon phi x100 coprocessors. Intel xeon phi programming environment intel software. In subsequent articles, i will dive a bit more into details of various programming modes, and techniques employed for some key applications.
Xeon phi systems unlike gpus, each xeon phi runs an operating system user can log directly into xeon phi and run code native mode but any serial parts of the application will be very slow relative. Colfax developer training cdt is an indepth intensive course on efficient parallel programming of intel xeon family processors and intel xeon phi coprocessors. Until usage on the phi nodes gets high enough, a single job will be allocated an entire node, which consists of. Run on intel xeon phi coprocessor natively no offload. It enabled many usage models and can still be found in numerous machines. The intel xeon phi knc processor is essentially a 60core smp chip where each core has a dedicated 512bit wide sse streaming simd extensions vector unit. Intel xeon phi coprocessor high performance programming. An overview of for intel xeon processors and intel xeon. Intel xeon phi processor 7200 family memory management. Intel xeon phi processor highperformance programming is useful even before you ever program a system with an intel xeon phi processor. If you actually try to write some code or port a project. Build intel 64 and intel xeon phi binaries by using the resp. All of the software versions are compatible right now except the intel drivers mpss for the phi on win 10 but the win 8. The article goes through an example of an openmpbased matrix code using the various programming models native entire app runs on the xeon phi, offload the host cpu runs the app.
Parallel programming on any general purpose processor including intel xeon phi coprocessor needs careful considerations of various aspect of program organization, algorithm selection and implementation to achieve maximum performance gain. If cards are swapped between slots, the number associated with a physical card will change. Well, reading a question of yours, i can be sure that you are rather inexperienced in programming. A second installment, next week, will discuss how programming the phi compares with cuda programming.
The 1day labs course cdt 102 features handson exercises on the available programming models and best optimization practices for the intel xeon phi coprocessor and intel xeon processor, and on the usage of the intel software development and diagnostic tools. Native execution occurs when an application runs entirely on an intel xeon phi coprocessor. Advice for successful parallel programming can be summarized as program with lots of threads that use vectors with your preferred programming languages and. From the user perspective, this change was transparent for programming on xeon phi while the recent changes in eventdriven apis of cudas had to be percolated to magmas publicly visible interface. Download intel xeon phi application design and implementation considerations pdf 608kb. Programming models for xeon phi university of colorado. Jul 26, 2016 well, reading a question of yours, i can be sure that you are rather inexperienced in programming. Hpc programming on intel manyintegratedcore hardware with. Intel xeon phi coprocessor an overview sciencedirect topics. Xeon phi is a series of x86 manycore processors designed and made by intel.
You are probably a new programmer or someone buying a new system for a programmer. Intel xeon phi coprocessor system software developers guide published on april 14, 2014, updated january 14, 2015 as with most computing systems, the intel many integrated core architecture programming model can be divided into two categories. Another departure from the cudabased magma was the device and softwarespecific tuning and optimization described in more detail in section 6. Developer access program dap for intel xeon phi processor. It includes a detailed presentation of the programming paradigm for intel xeon product family, optimization guidelines, and handson exercises on systems equipped with the intel xeon phi. Highly parallel applications using over 100 threads. Mar 10, 2015 colfax developer training cdt is an indepth intensive course on efficient parallel programming of intel xeon family processors and intel xeon phi coprocessors. Intel xeon phi coprocessor 5110p3000 series intel newsroom. Introduction of xeon phi programming wei feinstein hpc user services lsu hpcloni louisiana state university 10212015 introduction to xeon phi programming. Jan 27, 2017 in this special guest feature, james reinders looks at intel xeon phi processors from a programmers perspective. Over the past few years, the use of heterogeneous architectures in hpc at the large scale has become increasingly common.
To help ensure that your applications run at maximum efficiency, the authors emphasize key techniques for programming any modern parallel computing system whether based on intel xeon processors, intel xeon phi. Viewing the intel xeon phi as a black box, you can infer its architecture from its responses to the impulses you provide it. Running an intel xeon phi coprocessor program from the host system. How does a programmer think of intel xeon phi processors. What was dap for intel xeon phi processor formerly knights landing. Both cuda and intel xeon phi coprocessor applications utilize a large number of concurrent threads of execution to exploit hardware parallelism and achieve high performance.
To help ensure that your applications run at maximum. Intel xeon phi processor software is a set of software and utilities that enable functionalities of the intel xeon phi processor x200. Intel xeon phi processor high performance programming, 2nd. Intel cluster studio xe 20 with intel mpi library 4. The intel xeon phi coprocessor intel xeon phi coprocessor 5110p specifications ideal for. Programs that make calls directly to a vectorintrinsic programming.
There are three main programming models or types of applications that use intel xeon phi x100 coprocessor. Check out an overview of programming for intel xeon processors and intel xeon phi coprocessors for well an overview. Manycore 10212015 introduction to xeon phi programming intel xeon mul5ple cores intel xeon phi many integrated cores mic. The 1day labs course cdt 102 features handson exercises on the available programming models and best optimization practices for the intel xeon phi coprocessor and intel xeon processor, and on the. Software chemical and physical sciences engineering graphics and visualization life sciences development tools user. Intel xeon phi processor programming in a nutshell insidehpc. There are some recommendations we can make based on what has been working well for developers. Download it once and read it on your kindle device, pc, phones or tablets. This paper examines software performance optimization for an implementation of a nonlibrary version of dgemm executing on the intel xeon phi processor codenamed knights landing, with acronym knl running the linux operating system os. Additionally, many 3rdparty cluster software products now support xeon. Introduce the build environment for software enabled to run on intel xeon phi coprocessor. Openacc support for xeon phi will be coming in 20 from the portland group pgi. Intel xeon phi processor high performance programming is an allinone source of information for programming the secondgeneration intel xeon phi product family also called knights landing.
Hpc programming on intel manyintegratedcore hardware. Dap was a special program for developers worldwide to purchase a readytogo. The intel xeon phi processor takes software to new levels intel. Distributed applications which use message passing interface mpi to communicate between processes called mpi ranks on intel xeon phi x100. Which processor is better for programming, i7 or xeon. Dec 12, 2012 the article goes through an example of an openmpbased matrix code using the various programming models native entire app runs on the xeon phi, offload the host cpu runs the app. The intel xeon phi processor, a foundational element of the intel. Programming intel xeon phi coprocessors part 2, colfax. Intel xeon phi coprocessor high performance programming 1. Intel xeon phi programming environment intel developer zone. Its architecture allows use of standard programming languages and application programming interfaces apis such as openmp. The interface uses a virtual network driver over the pcie bus. In my previous article on the new intel xeon phi coprocessors, i focused on getting up and running as quickly as possible.
The authors provide detailed and timely knights landingspecific details, programming advice, and realworld examples. Upload the intel xeon phi binary to the intel xeon phi architecture. Oreilly members get unlimited access to live online training experiences, plus books, videos, and. Give an example of how to write code for intel xeon phi coprocessor and build using intel composer xe 2015. Intel xeon phi processor high performance programming. This article discusses how programming the phi compares with cuda. Currently, the phi coprocessor is packaged as a separate pcie device, external to the host processor. Intel xeon phi processor software content intel xeon phi processor software may 2017 users guide 7 2 intel xeon phi processor software content 2. All the cores are connected via a 512bit bidirectional ring interconnect figure 1. Software support for intel xeon phi coprocessors microway. Differences between a cuda and a phi coprocessor thread. In this brief article, i will convey how i, as a programmer, think of them. Intel xeon phi coprocessor fortran code using mpi, single threaded originally. Intel xeon phi processor high performance programming 2nd.
The xeon phi hardware model from a software perspective. You are probably a new programmer or someone buying a new system for a. Communication with the linux microos operating system running on the intelr xeon phi tm coprocessor is provided by a standard network interface. Intel xeon phi coprocessor high performance programming kindle edition by jeffers, james, reinders, james. The objective of this book is to introduce you to intel xeon phi architecture in as much as it affects software performance through programming. In fact the software designer opted for running a complete micro os based on linux kernel rather than the driver based model often used for pci. The prerequisite for this class is the oneday seminar cdt 101. Use features like bookmarks, note taking and highlighting while reading intel xeon phi coprocessor high performance programming. Intel r xeon phi tm coprocessors are numbered in the order in which they are discovered by pci enumeration. Marking a new era in high performance computing, intel corporation introduced the intel xeon phi coprocessors during supercomputing conference sc12 in salt lake city. Intel brings a new architecture for discovery with intel xeon phi coprocessors. Dec 10, 2012 a second installment, next week, will discuss how programming the phi compares with cuda programming.
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