This document provides a summary of new and changed product features and includes notes about features and problems not described in the product documentation.
Please see the licenses included in the distribution as well as the Disclaimer and Legal Information section of these release notes for details. Please see the following links for information on this release of the Intel® Fortran Compiler 19.0.
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This section highlights important changes from the previous product version and changes in product updates.
This is release for Intel® Compilers 2019 Update 8, compilers version 19.0.8. Highlights for this release:
Note: Advanced optimization options or very large programs may require additional resources such as memory or disk space.
Installation instructions are shipped with all Intel® Software Development Products as part of the documentation.
Note that user should have an administrative authorities to install Intel® Fortran Compiler on macOS*.
Please refer to Installation FAQ for more details on installation questions.
Intel® Parallel Studio XE 2019: Getting Started with the Intel® Fortran Compiler 19.0 for macOS* at <install-dir>/documentation_2019/en/compiler_f/ps2019/get_started_mf.htm contains information on how to use the Intel® Fortran Compiler from the command line and from Xcode*.
Product documentation is linked from <install-dir>/documentation_2019/en/compiler_f/ps2019/get_started_mf.htm.
Offline core documentation is removed from the Intel® Parallel Studio XE installed image. The core documentation for the components of Intel® Parallel Studio XE are available at the Intel® Software Documentation Library for viewing online. Offline documentation for older versions is also available from the Intel® Software Development Products Registration Center: Product List > Intel® Parallel Studio XE Documentation.
Refer to the Intel® Parallel Studio XE Support – Documentation for additional User and Reference Guides, What’s New and Release Notes, and Installation Guides.
Intel®-provided debug solutions are based GNU* GDB. Please see Intel® Parallel Studio 2019 Composer Edition Fortran - Debug Solutions Release Notes for further information.
Product samples are now available online at Intel® Software Product Samples and Tutorials
Refer to the Redistributable Libraries for Intel® Parallel Studio XE for more information.
If you did not register your compiler during installation, please do so at the Intel® Software Development Products Registration Center. Registration entitles you to free technical support, product updates and upgrades for the duration of the support term.
For information about how to find Technical Support, Product Updates, User Forums, FAQs, tips and tricks, and other support information, please visit: http://www.intel.com/software/products/support/
Note: If your distributor provides technical support for this product, please contact them for support rather than Intel.
In general, object code and modules compiled with earlier versions of Intel Fortran Compiler for Linux* (8.0 and later) may be used in a build with version 19.0. Exceptions include:
In versions prior to 12.0, when a REAL(16) or COMPLEX(16) (REAL*16 or COMPLEX*32) item was passed by value, the stack address was aligned at 4 bytes. For improved performance, the version 12 and later compilers align such items at 16 bytes and expects received arguments to be aligned on 16-byte boundaries. This change is also compatible with gcc.
This change primarily affects compiler-generated calls to library routines that do computations on REAL(16) values, including intrinsics. If you have code compiled with earlier versions and link it with the version 12 libraries, or have an application linked to the shared version of the Intel run-time libraries, it may give incorrect results.
In order to avoid errors, you must recompile all Fortran sources that use the REAL(16) and COMPLEX(16) datatypes if they were compiled by compiler versions earlier than 12.0.
The Intel® Fortran Compiler supports all features from the Fortran 2008 standard.
Please refer to the Fortran 2008 Standard (PDF) and the Fortran 2018 Standard (PDF) if necessary.
The Intel® Software License Manager has been updated to version 2.9 for this release. You must upgrade to this version before installing Intel Parallel Studio XE 2019 Update 4 and newer updates with a floating license. Please refer for more details:
Intel® Software License Manager Download
Intel® Software License Manager Release Notes
For more information, see the compiler documentation or the link to the OpenMP* Specification above.
Please refer to the compiler documentation for details
For a list of deprecated compiler options, see the Compiler Options section of the documentation.
!$OMP SIMD directive overrides FP value and exception safe settings. Following options introduced in 19.0 Update 1 change that legacy behavior and produce value and exception safe code even for SIMD loops:
Note that these options don't affect auto-vectorization of loops. Please refer to the compiler documentation for more details.
-qopenmp-simd option enables OpenMP* SIMD compilation. It is set by default now. In order to disable it please use -qno-openmp-simd- option explicitly.
These switches tell the compiler to produce errors or warnings when shapes of arrays do not match on assignments. This check is done for assignments only (and implicit assignments resulting from an allocate with source= syntax).
This option is supported in versions 19.0 update 8 of the compiler and above. The details about this option can be found in the Intel® Fortran Compiler 19.1 Developer Guide and Reference. To find more information, see https://www.intel.com/content/dam/support/us/en/documents/processors/mitigations-jump-conditional-code-erratum.pdf
The Loop Profiler feature is deprecated in the 19.0 compiler and will be removed in a future compiler release. The following compiler options related to Loop Profiler are deprecated and will be removed in a future compiler release: -profile-loops=keyword, -profile-loops-report=value -profile-functions, -guide-profile.
Integration with Xcode is deprecated in the 19.0 compiler and will be removed in a future compiler release.
Starting with the 19.0 release of the Intel® Fortran Compiler, macOS 32-bit applications are no longer supported.
If you want to compile 32-bit applications, you should use an earlier version of the compiler and Xcode* 9.4 or earlier.
Beginning with Xcode* 6.3.2, the IDE integration for Intel® Parallel Studio XE does not complete installation until the next time Xcode is started after completing the product installation. When Xcode* is started, you will see a dialog.
The dialog is titled “Unexpected code bundles”, and mentions that Xcode found one or more code bundles not provided by Apple. It then has two buttons, one to “Load Bundles” and one to “Skip Bundles”. “Load Bundles” is required to be clicked to complete the Intel Parallel Studio XE IDE integration. Clicking “Skip Bundles” will cause the Intel tools to not be selectable in Xcode*.
macOS*’s new XCode 10 comes with a new build system and it is configured as the default. Currently, the Intel Fortran Compiler does not support it. You will see the error 'no rule to process file' when building an Intel Fortran Compiler project within XCode 10. Please switch to “Legacy Build System” in Project Settings to build your Fortran project in Xcode 10.
For more details please find this article.
The Intel® Fortran Compiler now supports all features from the Fortran 2008 standard. The Intel® Fortran Compiler also supports features from the proposed draft Fortran 2018 standard. Additional features will be supported in future releases. Features from the proposed Fortran 2018 standard supported by the current version include:
Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.
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Please consult the licenses included in the distribution for details.
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