hanchenye-llvm-project/openmp/docs
Jonathan Peyton 6a556ecaf4 [OpenMP][libomp] Add use-all syntax to KMP_HW_SUBSET
This patch allows the user to request all resources of a particular
layer (or core-attribute). The syntax of KMP_HW_SUBSET is modified
so the number of units requested is optional or can be replaced with an
'*' character.

e.g., KMP_HW_SUBSET=c:intel_atom@3 will use all the cores after offset 3
e.g., KMP_HW_SUBSET=*c:intel_core will use all the big cores
e.g., KMP_HW_SUBSET=*s,*c,1t will use all the sockets, all cores per
      each socket and 1 thread per core.

Differential Revision: https://reviews.llvm.org/D115826
2021-12-20 13:45:21 -06:00
..
_static
_templates
_themes
design [OpenMP][libomp] Add use-all syntax to KMP_HW_SUBSET 2021-12-20 13:45:21 -06:00
openacc [OpenMP][OpenACC] Implement `ompx_hold` map type modifier extension in Clang (1/2) 2021-08-31 16:13:49 -04:00
optimizations [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
remarks [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
CMakeLists.txt
README.txt
ReleaseNotes.rst [NFC] Correct documentation error in OpenMP release ReleaseNotes 2021-07-20 02:04:43 +00:00
SupportAndFAQ.rst [NFC] Trim trailing whitespace in *.rst 2021-11-15 09:17:08 +08:00
conf.py
doxygen-mainpage.dox
doxygen.cfg.in [NFC] Inclusive Language: change master to main for .chm files 2021-11-08 08:23:04 -06:00
index.rst [OpenMP][OpenACC] Implement `ompx_hold` map type modifier extension in Clang (1/2) 2021-08-31 16:13:49 -04:00

README.txt

OpenMP LLVM Documentation
==================

OpenMP LLVM's documentation is written in reStructuredText, a lightweight
plaintext markup language (file extension `.rst`). While the
reStructuredText documentation should be quite readable in source form, it
is mostly meant to be processed by the Sphinx documentation generation
system to create HTML pages which are hosted on <https://llvm.org/docs/> and
updated after every commit. Manpage output is also supported, see below.

If you instead would like to generate and view the HTML locally, install
Sphinx <http://sphinx-doc.org/> and then do:

    cd <build-dir>
    cmake -DLLVM_ENABLE_SPHINX=true -DSPHINX_OUTPUT_HTML=true <src-dir>
    make
    $BROWSER <build-dir>/projects/openmp/docs//html/index.html

The mapping between reStructuredText files and generated documentation is
`docs/Foo.rst` <-> `<build-dir>/projects/openmp/docs//html/Foo.html` <->
`https://openmp.llvm.org/docs/Foo.html`.

If you are interested in writing new documentation, you will want to read
`llvm/docs/SphinxQuickstartTemplate.rst` which will get you writing
documentation very fast and includes examples of the most important
reStructuredText markup syntax.

Manpage Output
===============

Building the manpages is similar to building the HTML documentation. The
primary difference is to use the `man` makefile target, instead of the
default (which is `html`). Sphinx then produces the man pages in the
directory `<build-dir>/docs/man/`.

    cd <build-dir>
    cmake -DLLVM_ENABLE_SPHINX=true -DSPHINX_OUTPUT_MAN=true <src-dir>
    make
    man -l >build-dir>/docs/man/FileCheck.1

The correspondence between .rst files and man pages is
`docs/CommandGuide/Foo.rst` <-> `<build-dir>/projects/openmp/docs//man/Foo.1`.
These .rst files are also included during HTML generation so they are also
viewable online (as noted above) at e.g.
`https://openmp.llvm.org/docs/CommandGuide/Foo.html`.