forked from OSchip/llvm-project
181b4bb3bb
This release use aligns with Intel(r) Composer XE 2013 SP1 Product Update 2 New features * The library can now be built with clang (though wiht some limitations since clang does not support 128 bit floats) * Support for Vtune analysis of load imbalance * Code contribution from Steven Noonan to build the runtime for ARM* architecture processors * First implementation of runtime API for OpenMP cancellation Bug Fixes * Fixed hang on Windows (only) when using KMP_BLOCKTIME=0 llvm-svn: 197914 |
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README.txt
README for Intel(R) OpenMP* Runtime Library
===========================================
How to Build Documentation
==========================
The main documentation is in Doxygen* format, and this distribution
should come with pre-built PDF documentation in doc/Reference.pdf.
However, an HTML version can be built by executing:
% doxygen doc/doxygen/config
in this directory.
That will produce HTML documentation in the doc/doxygen/generated
directory, which can be accessed by pointing a web browser at the
index.html file there.
If you don't have Doxygen installed, you can download it from
www.doxygen.org.
How to Build the Intel(R) OpenMP* Runtime Library
=================================================
The Makefile at the top-level will attempt to detect what it needs to
build the Intel(R) OpenMP* Runtime Library. To see the default settings,
type:
make info
You can change the Makefile's behavior with the following options:
omp_root: The path to the top-level directory containing the top-level
Makefile. By default, this will take on the value of the
current working directory.
omp_os: Operating system. By default, the build will attempt to
detect this. Currently supports "linux", "macos", and
"windows".
arch: Architecture. By default, the build will attempt to
detect this if not specified by the user. Currently
supported values are
"32" for IA-32 architecture
"32e" for Intel(R) 64 architecture
"mic" for Intel(R) Many Integrated Core Architecture
If "mic" is specified then "icc" will be used as the
compiler, and appropriate k1om binutils will be used. The
necessary packages must be installed on the build machine
for this to be possible (but an Intel(R) Xeon Phi(TM)
coprocessor card is not required to build the library).
compiler: Which compiler to use for the build. Defaults to "icc"
or "icl" depending on the value of omp_os. Also supports
some versions of "gcc"* when omp_os is "linux". The selected
compiler should be installed and in the user's path. The
corresponding Fortran compiler should also be in the path.
See "Supported RTL Build Configurations" below for more
information on compiler versions.
mode: Library mode: default is "release". Also supports "debug".
To use any of the options above, simple add <option_name>=<value>. For
example, if you want to build with gcc instead of icc, type:
make compiler=gcc
Supported RTL Build Configurations
==================================
Supported Architectures: IA-32 architecture, Intel(R) 64, and
Intel(R) Many Integrated Core Architecture
--------------------------------------------
| icc/icl | gcc | clang |
--------------|---------------|--------------------------|
| Linux* OS | Yes(1,5) | Yes(2,4) | Yes(4,6,7) |
| OS X* | Yes(1,3,4) | No | Yes(4,6,7) |
| Windows* OS | Yes(1,4) | No | No |
----------------------------------------------------------
(1) On IA-32 architecture and Intel(R) 64, icc/icl versions 12.x are
supported (12.1 is recommended).
(2) gcc version 4.6.2 is supported.
(3) For icc on OS X*, OS X* version 10.5.8 is supported.
(4) Intel(R) Many Integrated Core Architecture not supported.
(5) On Intel(R) Many Integrated Core Architecture, icc/icl versions 13.0
or later are required.
(6) clang version 3.3 is supported.
(7) clang currently does not offer a software-implemented 128 bit extended
precision type. Thus, all entry points reliant on this type are removed
from the library and cannot be called in the user program. The following
functions are not available:
__kmpc_atomic_cmplx16_*
__kmpc_atomic_float16_*
__kmpc_atomic_*_fp
Front-end Compilers that work with this RTL
===========================================
The following compilers are known to do compatible code generation for
this RTL: icc/icl, gcc. See the documentation for more detail.
-----------------------------------------------------------------------
Notices
=======
*Other names and brands may be claimed as the property of others.