futhark-pyopencl¶
SYNOPSIS¶
futhark pyopencl [options…] infile
DESCRIPTION¶
futhark pyopencl
translates a Futhark program to Python code
invoking OpenCL kernels, which depends on Numpy and PyOpenCL. By
default, the program uses the first device of the first OpenCL
platform - this can be changed by passing -p
and -d
options to
the generated program (not to futhark pyopencl
itself).
The resulting program will otherwise behave exactly as one compiled
with futhark py
. While the sequential host-level code is pure
Python and just as slow as in futhark py
, parallel sections will
have been compiled to OpenCL, and runs just as fast as when using
futhark opencl
. The kernel launch overhead is significantly
higher, however, so a good rule of thumb when using
futhark pyopencl
is to aim for having fewer but longer-lasting
parallel sections.
The generated code requires at least PyOpenCL version 2015.2.
OPTIONS¶
Accepts the same options as futhark-opencl.