'\" t
.\"     Title: prefetch
.\"    Author: The Khronos Group
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 02/03/2019
.\"    Manual: OpenCL Manual
.\"    Source: The Khronos Group
.\"  Language: English
.\"
.TH "PREFETCH" "3clc" "02/03/2019" "The Khronos Group" "OpenCL Manual"
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.SH "NAME"
prefetch \- Prefetch bytes into the global cache\&.
.SH ""
.HP \w'void\ prefetch('u
.BI "void prefetch(const\ __global\ gentype\ *" "p" ", size_t\ " "num_gentypes" ");"
.SH "DESCRIPTION"
.PP
Prefetch
\fInum_gentypes\fR
* sizeof(\fBgentype\fR) bytes into the global cache\&. The prefetch instruction is applied to a work\-item in a work\-group and does not affect the functional behavior of the kernel\&.
.SH "NOTES"
.PP
The generic type name
\fBgentype\fR
indicates the built\-in data types
\fBchar\fR,
\fBchar{2|3|4|8|16}\fR,
\fBuchar\fR,
\fBuchar{2|3|4|8|16}\fR,
\fBshort\fR,
\fBshort{2|3|4|8|16}\fR,
\fBushort\fR,
\fBushort{2|3|4|8|16}\fR,
\fBint\fR,
\fBint{2|3|4|8|16}\fR,
\fBuint\fR,
\fBuint{2|3|4|8|16}\fR,
\fBlong\fR,
\fBlong{2|3|4|8|16}\fR,
\fBulong\fR,
\fBulong{2|3|4|8|16}\fR,
\fBfloat\fR,
\fBfloat{2|3|4|8|16}\fR, or
\fBdouble\fR,
\fBdouble{2|3|4|8|16}\fR
as the type for the arguments unless otherwise stated\&.
.SH "SPECIFICATION"
.PP
\m[blue]\fBOpenCL Specification\fR\m[]\&\s-2\u[1]\d\s+2
.SH "SEE ALSO"
.PP
\fBasyncCopyFunctions\fR(3clc)
.SH "AUTHORS"
.PP
\fBThe Khronos Group\fR
.SH "COPYRIGHT"
.br
Copyright \(co 2007-2011 The Khronos Group Inc.
.br
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or associated documentation files (the "Materials"), to deal in the Materials without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Materials, and to permit persons to whom the Materials are furnished to do so, subject to the condition that this copyright notice and permission notice shall be included in all copies or substantial portions of the Materials.
.sp
.SH "NOTES"
.IP " 1." 4
OpenCL Specification
.RS 4
\%page 276, section 6.12.10 - Async Copies from Global to Local Memory...
.RE