1. Intel Compiler License File Download
2. Intel Compiler License File Format
3. Intel Compiler License File Download
4. Intel Fortran Compiler Versions
5. Intel Compiler License File Location

The Intel® License Manager for FLEXlm. is a collection of software components included with your product purchase (or downloaded separately) to help you manage your license file in a multiple-user environment. This document describes the installation and use of the Intel License Manager for FLEXlm for supported platforms. How to install the Intel Parallel Studio XE on Linux. OS system. + Link download parallelstudioxe2016.tgz, + Get a key free via.

Intel Fortran Compiler, also known as IFORT, is a group of Fortrancompilers from Intel for Windows, OS X, and Linux.

Overview[edit]

The compilers generate code for IA-32 and Intel 64 processors and certain non-Intel but compatible processors, such as certain AMD processors. A specific release of the compiler (11.1) remains available for development of Linux-based applications for IA-64 (Itanium 2) processors. On Windows, it is known as Intel Visual Fortran.^[3] On OS X and Linux, it is known as Intel Fortran. Brother tn420 fax machine manual.

The latest release of the compiler continues to support the Intel Xeon Phi coprocessor and Intel Architecture instruction-set capabilities by means of automatic vectorization, which can enable applications to use SSE, SSE2, SSE3, SSSE3, SSE4 and AVXSIMD instructions. Use of such instructions through the compiler can lead to improved application performance in some applications as run on IA-32 and Intel 64 architectures, compared to applications built with compilers that do not support these instructions.

Intel Fortran also continues support for OpenMP 4.0,^[4]automatic parallelization for symmetric multiprocessing, almost all of the Fortran 2003 standard and much of the Fortran 2008 standard^[5] including Coarray Fortran, user-defined I/O, BLOCK and submodules. For more information on Fortran standards, a number or resources are available, such as the Wikipedia Fortran entry or the Fortran wiki page. When used with Intel cluster tools (see the 'Description of Packaging' below) the compiler can also automatically generate Message Passing Interface calls for distributed memory multiprocessing from OpenMP directives.

Optimizations[edit]

Intel compilers are optimized^[6] to computer systems using processors that support Intel architectures. They are designed to minimize stalls and to produce code that executes in the fewest possible number of cycles. Intel Fortran Compilers support three separate high-level techniques for optimizing the compiled program: interprocedural optimization (IPO), profile-guided optimization (PGO), and other high-level optimizations (HLO). They also support a directives-based approach to application offloading to Intel coprocessors, such as the Intel Xeon Phi coprocessor.

Interprocedural optimization applies typical compiler optimizations (such as constant propagation) but uses a broader scope that may include multiple procedures, multiple files, or the entire program.^[7]

Regarding profile-guided optimization, the compiler generates a dataset of performance-related information from using the application with representative workloads, which it then analyzes to find which parts of the application are executed more and less frequently. The compiler uses these data to organize application execution to optimize performance based on how the application is actually used. This is in contrast to IPO which optimizes applications according to the logical flow of the application independent of workloads. The two can be combined to provide workload-based optimizations within which the logical-flow is optimized. Thus, all optimizations can benefit from profile-guided feedback because they are less reliant on heuristics when making compilation decisions.

High-level optimizations are optimizations performed on a version of the program that more closely represents the source code. This includes loop interchange, loop fusion, loop unrolling, loop distribution, data prefetch, and more.^[8]

Standards support[edit]

The Intel Fortran compiler supports all of the features of the Fortran 90, Fortran 95, Fortran 2003 standards and most of Fortran 2008. It also supports some draft Fortran 2018 features. Additionally, it supports various extensions found in VAX Fortran and Compaq Visual Fortran.

A partial list of items from the Fortran 2003 standard supported by Intel Fortran:

• Parameterized derived tpes
• User-defined derived type I/O
• Enumerators
• Type extension and type-bound procedures
• FINAL routines and GENERIC, OPERATOR, and ASSIGNMENT overloading in type-bound procedures
• Polymorphic data and the CLASS declaration
• Allocatable scalar variables (not deferred-length character)
• SOURCE= keyword for ALLOCATE
• Intrinsic modules IEEE_EXCEPTIONS, IEEE_ARITHMETIC and IEEE_FEATURES
• ASSOCIATE construct
• DO CONCURRENT construct
• PROCEDURE declaration and procedure pointers
• CONTIGUOUS attribute
• Structure constructors with component names and default initialization
• Array constructors with type and character length specifications
• I/O keywords BLANK, DECIMAL, DELIM, ENCODING, IOMSG, PAD, ROUND, SIGN, and SIZE
• PUBLIC types with PRIVATE components and PRIVATE types with PUBLIC components
• A file can be opened for stream access (ACCESS='STREAM')
• BIND attribute and ISO_C_BINDING intrinsic module
• ASYNCHRONOUS attribute
• VALUE attribute
• FLUSH statement
• WAIT statement
• IMPORT statement
• Allocatable components of derived types, allocatable dummy arguments, and allocatable function results
• VOLATILE attribute^[9]
• Names of length up to 63 characters
• Statements up to 256 lines

A partial list of items from the Fortran 2008 standard supported by Intel Fortran:

• Coarrays
• Submodules
• The BLOCK construct to allow dynamic scoping
• CRITICAL construct
• The Fortran 2008 standard specifies a maximum rank of 15; the maximum array rank has been raised to 31 dimensions in Intel Fortran
• A generic interface may have the same name as a derived type
• Bounds specification and bounds remapping list on a pointer assignment
• NEWUNIT= specifier in OPEN
• A CONTAINS section can be empty
• Coarrays can be specified in ALLOCATABLE, ALLOCATE, and TARGET statements
• MOLD keyword in ALLOCATE
• DO CONCURRENT statement
• ERROR STOP statement

Fortran 2018, currently a draft version, includes further interoperability between Fortran and C. Intel Fortran supports draft Fortran 2018 as of version 16.0.

Architectures[edit]

• x86-64 (Intel 64 and AMD64)
• IA-64 (Itanium 2)

Description of packaging[edit]

The Intel Fortran compiler is available as part of the Intel Parallel Studio XE 2016 suite, which focuses on development of parallelism models in application software. It also includes Intel C++, Intel Math Kernel Library, Intel Integrated Performance Primitives, Intel Data Analytics Acceleration Library and performance analysis tools such as Intel VTune Amplifier and Intel Inspector. There are three forms of Parallel Studio XE: Composer, Professional, and Cluster. The Composer Edition includes the C++ and/or Fortran compilers, the performance libraries, and parallel models support. The Professional Edition adds the analysis tools that assist in debugging and tuning parallel applications. The Cluster Edition adds support for development of software for computer clusters. It includes all of the above plus a standards-based MPI Library, MPI communications profiling and analysis tool, MPI error checking and tuning tools, and cluster checker.

History since 2003[edit]

Debugging[edit]

The Intel compiler provides debugging information that is standard for the common debuggers (DWARF 2 on Linux, similar to gdb, and COFF for Windows). The flags to compile with debugging information are /Zi on Windows and -g on Linux. Debugging is done on Windows using the Visual Studio debugger, and on Linux using gdb.

While the Intel compiler can generate a gprof-compatible profiling output, Intel also provides a kernel-level, system-wide statistical profiler as a separate product called VTune. VTune features an easy-to-use GUI (integrated into Visual Studio for Windows, Eclipse for Linux) as well as a command-line interface. In addition to the VTune profiler, there is Intel Advisor that specializes in vectorization optimization and tools for threading design and prototyping.

Intel Compiler License File Download

Intel also offers a tool for memory and threading error detection called Intel Inspector XE. Regarding memory errors, it helps detect memory leaks, memory corruption, allocation/de-allocation of API mismatches and inconsistent memory API usage. Regarding threading errors, it helps detect data races (both heap and stack), deadlocks and thread and synch API errors.

See also[edit]

• Intel Integrated Performance Primitives (IPP)
• Intel Data Analytics Acceleration Library (DAAL)
• Intel Math Kernel Library (MKL)
• Intel Threading Building Blocks (TBB)
• VTune Amplifier
• Intel Developer Zone (Intel DZ; support and discussion)

References[edit]

1. ^'Intel Fortran Compiler 19.0 Release Notes'.
2. ^'No Cost Options for Intel Parallel Studio XE, Support yourself, Royalty-Free'.
3. ^'Intel Visual Fortran Compiler Professional Edition for Windows'. cnet.com.
4. ^P. Muruganandam (2017). OpenMP GNU and Intel Fortran.
5. ^'Intel Fortran'. 2016. .. .. significant Fortran 2008 feature support, including ..
6. ^'Intel (Fortran, C, and C++)'. NERSC.gov.
7. ^Intel compiler documentation. Select the Fortran compiler of choice and search for Profile-Guided Optimization. http://software.intel.com/en-us/intel-software-technical-documentation
8. ^The Software Optimization Cookbook, High-Performance Recipes for IA-32 Platforms, Richard Gerber, Aart J.C. Bik, Kevin B. Smith, and Xinmin Tian, Intel Press, 2006
9. ^'VOLATILE'. Oracle.com.
10. ^'Intel Visual Fortran 15 now available'.

External links[edit]

• Official website

Intel Compiler License File Format

Intel C++ Compiler, also known as icc or icl, is a group of C and C++compilers from Intel available for Windows, Mac, Linux, FreeBSD^[3] and Intel-based Android devices.

Overview[edit]

The compilers generate optimized code for IA-32 and Intel 64 architectures, and non-optimized code for non-Intel but compatible processors, such as certain AMD processors. A specific release of the compiler (11.1) is available for development of Linux-based applications for IA-64 (Itanium 2) processors.

The 14.0 compiler added support for Intel-based Android devices and optimized vectorization and SSE Family instructions for performance. The 13.0 release added support for the Intel Xeon Phi coprocessor. It continues support for automatic vectorization, which can generate SSE, SSE2, SSE3, SSSE3, SSE4, AVX and AVX2SIMD instructions, and the embedded variant for Intel MMX and MMX 2.^[4] Use of such instruction through the compiler can lead to improved application performance in some applications as run on IA-32 and Intel 64 architectures, compared to applications built with compilers that do not support these instructions.

Intel compilers support Cilk Plus, which is a capability for writing vectorized and parallel code that can be used on IA-32 and Intel 64 processors or which can be offloaded to Xeon Phi coprocessors. They also continue support for OpenMP 4.0, symmetric multiprocessing, automatic parallelization, and Guided Auto-Parallization (GAP). With the add-on Cluster OpenMP capability, the compilers can also automatically generate Message Passing Interface calls for distributed memory multiprocessing from OpenMP directives.

Intel C++ is compatible with Microsoft Visual C++ on Windows and integrates into Microsoft Visual Studio. On Linux and Mac, it is compatible with GNU Compiler Collection (GCC) and the GNU toolchain. Intel C++ Compiler for Android is hosted on Windows, OS X or Linux and is compatible with the Android NDK, including gcc and the Eclipse IDE. Intel compilers are known for the application performance they can enable as measured by benchmarks, such as the SPEC CPU benchmarks.

Optimizations[edit]

Intel Compiler License File Download

Intel compilers are optimized to computer systems using processors that support Intel architectures. They are designed to minimize stalls and to produce code that executes in the fewest possible number of cycles. The Intel C++ Compiler supports three separate high-level techniques for optimizing the compiled program: interprocedural optimization (IPO), profile-guided optimization (PGO), and high-level optimizations (HLO). The Intel C++ compiler in the Parallel Studio XE products also supports tools, techniques and language extensions for adding and maintaining application parallelism on IA-32 and Intel 64 processors and enables compiling for Intel Xeon Phi processors and coprocessors.

Profile-guided optimization refers to a mode of optimization where the compiler is able to access data from a sample run of the program across a representative input set. The data would indicate which areas of the program are executed more frequently, and which areas are executed less frequently. All optimizations benefit from profile-guided feedback because they are less reliant on heuristics when making compilation decisions.

High-level optimizations are optimizations performed on a version of the program that more closely represents the source code. This includes loop interchange, loop fusion, loop fission, loop unrolling, data prefetch, and more.^[5]

Interprocedural optimization applies typical compiler optimizations (such as constant propagation) but using a broader scope that may include multiple procedures, multiple files, or the entire program.^[6]

Intel's compiler has been criticized for applying, by default, floating-point optimizations not allowed by the C standard and that require special flags with other compilers such as gcc.^[7]

Architectures[edit]

• x86-64 (Intel 64 and AMD64)
• IA-64 (Itanium 2)

Description of packaging[edit]

Except for the Intel Bi-Endian C++ Compiler, Intel C++ compilers are not available in standalone form. They are available in suites:

• Intel Parallel Studio XE for development of technical, enterprise, and high-performance computing applications on Windows, Linux and Mac
• Intel System Studio for development of system and app software for embedded systems or devices running Windows, Linux or Android

The suites include other build tools, such as libraries, and tools for threading and performance analysis.

History since 2003[edit]

Flags and manuals[edit]

Documentation can be found at the Intel Software Technical Documentation site.

Debugging[edit]

The Intel compiler provides debugging information that is standard for the common debuggers (DWARF 2 on Linux, similar to gdb, and COFF for Windows). The flags to compile with debugging information are /Zi on Windows and -g on Linux. Debugging is done on Windows using the Visual Studio debugger and, on Linux, using gdb.

While the Intel compiler can generate a gprof compatible profiling output, Intel also provides a kernel level, system-wide statistical profiler called Intel VTune Amplifier. VTune can be used from a command line or thru an included GUI on Linux or Windows. It can also be integrated into Visual Studio on Windows, or Eclipse on Linux). In addition to the VTune profiler, there is Intel Advisor that specializes in vectorization optimization and tools for threading design and prototyping.

Intel also offers a tool for memory and threading error detection called Intel Inspector XE. Regarding memory errors, it helps detect memory leaks, memory corruption, allocation/de-allocation of API mismatches and inconsistent memory API usage. Regarding threading errors, it helps detect data races (both heap and stack), deadlocks and thread and synch API errors.

Reception[edit]

Intel and third parties have published benchmark results to substantiate performance leadership claims over other commercial, open-source and AMD compilers and libraries on Intel and non-Intel processors. Intel and AMD have documented flags to use on the Intel compilers to get optimal performance on Intel and AMD processors.^[11][12] Nevertheless, the Intel compilers have been known to use sub-optimal code for processors from vendors other than Intel. For example, Steve Westfield wrote in a 2005 article at the AMD website:^[13]

Intel Fortran Compiler Versions

The Danish developer and scholar Agner Fog wrote in 2009:^[14]

This vendor-specific CPU dispatching (function multi-versioning) decreases the performance on non-Intel processors of software built with an Intel compiler or an Intel function library – possibly without the knowledge of the programmer. This has allegedly led to misleading benchmarks,^[14] including one incident when changing the CPUID of a VIA Nano significantly improved results.^[15] A legal battle between AMD and Intel over this and other issues has been settled in November 2009.^[16] In late 2010, AMD settled a US Federal Trade Commissionantitrust investigation against Intel.^[17]

The FTC settlement included a disclosure provision where Intel must:^[18]

Intel Compiler License File Location

Easycap audio driver windows 10. In compliance with this rule, Intel added an 'optimization notice' to its compiler descriptions stating that they 'may or may not optimize to the same degree for non-Intel microprocessors' and that 'certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors'. It says that:^[19]

As reported by The Register^[20] in July 2013, Intel was suspected of 'benchmarksmanship', when it was shown that the object code produced by the Intel compiler for the AnTuTu Mobile Benchmark omitted portions of the benchmark which showed increased performance compared to ARM platforms.

See also[edit]

• Intel Integrated Performance Primitives (IPP)
• Intel Data Analytics Acceleration Library (DAAL)
• Intel Math Kernel Library (MKL)
• Intel Threading Building Blocks (TBB)
• VTune Amplifier
• Intel Developer Zone (Intel DZ; support and discussion)

References[edit]

1. ^'Intel C++ Compiler 19.0 Release Notes'.
2. ^'Intel C++ Compiler for Android documentation'.
3. ^'Intel® System Studio 2016 for FreeBSD* Intel® Software'. software.intel.com. Retrieved 2018-03-15.
4. ^A. J. C. Bik, The Software Vectorization Handbook (Intel Press, Hillsboro, OR, 2004), ISBN0-9743649-2-4.
5. ^The Software Optimization Cookbook, High-Performance Recipes for IA-32 Platforms, Richard Gerber, Aart J.C. Bik, Kevin B. Smith, and Xinmin Tian, Intel Press, 2006
6. ^Intel C++ Compiler XE 13.0 User and Reference Guides
7. ^The pitfalls of verifying floating-point computations, by David Monniaux, also printed in ACM Transactions on programming languages and systems (TOPLAS), May 2008; section 4.3.2 discusses nonstandard optimizations.
8. ^This note is attached to the release in which Cilk Plus was introduced. This ULR points to current documentation: http://software.intel.com/en-us/intel-composer-xe/
9. ^Intel C++ Composer XE 2013 Release Notes[1]http://software.intel.com/en-us/articles/intel-c-composer-xe-2013-release-notes/
10. ^'Intel® Compilers Intel® Developer Zone'. Intel.com. 1999-02-22. Retrieved 2012-10-13.
11. ^[2]Archived March 23, 2010, at the Wayback Machine
12. ^'Archived copy'(PDF). Archived from the original(PDF) on 2011-03-22. Retrieved 2011-03-30.CS1 maint: archived copy as title (link)
13. ^'Your Processor, Your Compiler, and You: The Case of the Secret CPUID String'.
14. ^ ^ab'Agner`s CPU blog - Intel's 'cripple AMD' function'. www.agner.org.
15. ^Hruska, Joel (29 July 2008). 'Low-end grudge match: Nano vs. Atom'. Ars Technica.
16. ^'Settlement agreement'(PDF). download.intel.com.
17. ^'Intel and U.S. Federal Trade Commission Reach Tentative Settlement'. Newsroom.intel.com. 2010-08-04. Retrieved 2012-10-13.
18. ^FTC, Intel Reach Settlement; Intel Banned From Anticompetitive Practices
19. ^'Optimization Notice'. Intel Corporation. Retrieved 11 December 2013.
20. ^'Analyst: Tests showing Intel smartphones beating ARM were rigged'.

External links[edit]