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.. role:: ref(emphasis)
.. _futhark-ispc(1):
============
futhark-ispc
============
SYNOPSIS
========
futhark ispc [options...] <program.fut>
DESCRIPTION
===========
``futhark ispc`` translates a Futhark program to a combination of C
and ISPC code, with ISPC used for parallel loops. It otherwise
operates similarly to :ref:`futhark-multicore(1)`. You need to have
``ispc`` on your ``PATH``.
OPTIONS
=======
Accepts the same options as :ref:`futhark-multicore(1)`.
ENVIRONMENT VARIABLES
=====================
``CC``
The C compiler used to compile the program. Defaults to ``cc`` if
unset.
``CFLAGS``
Space-separated list of options passed to the C compiler. Defaults
to ``-O3 -std=c99 -pthread`` if unset.
``ISPCFLAGS``
Space-separated list of options passed to ``ispc``. Defaults to
``-O3 --woff`` if unset.
EXECUTABLE OPTIONS
==================
Generated executables accept the same options as those generated by
:ref:`futhark-multicore(1)`.
LIBRARY USAGE
=============
When compiling a program ``foo.fut`` with ``futhark ispc --library``,
a ``foo.kernels.ispc`` file is produced that must be compiled with
``ispc`` and linked with the final program. For example::
$ ispc -o foo.kernels.o foo.kernels.ispc --addressing=64 --pic --woff -O3
BUGS
====
Currently works only on Unix-like systems because of a dependency on
pthreads. Adding support for Windows would likely not be difficult.
SEE ALSO
========
:ref:`futhark-multicore(1)`, :ref:`futhark-test(1)`
|
