3rd-party/tbb/examples/pipeline/square/readme.html
Text filter that demonstrates the use of parallel_pipeline. Example program reads a file containing decimal integers in text format, and changes each to its square.
System Requirements
For the most up to date system requirements, see the release notes.
Files
square.cppSource code for example. gen_input.cppSource code for sample input generation. MakefileMakefile for building the example.
Directories
msvsContains Microsoft* Visual Studio* workspace for building and running the example (Windows* systems only). xcodeContains Xcode* IDE workspace for building and running the example (macOS* systems only).
For information about the minimum supported version of IDE, see release notes.
Build instructions
General build directions can be found here.
Two additional targets for this example: make gen_inputCreate an input generator program that prints out a sequence of integers. make input.txtCreate an input file for the example (with help of gen_input).
Usage
square _-h_Prints the help for command line options square [n-of-threads=value] [input-file=value] [output-file=value] [max-slice-size=value] [silent]square [n-of-threads [input-file [output-file [max-slice-size]]]] [silent]n-of-threads is the number of threads to use; a range of the form low[:high], where low and optional high are non-negative integers or 'auto' for a platform-specific default number.
input-file is an input file name.
output-file is an output file name.
max-slice-size is the maximum number of characters in one slice.
silent - no output except elapsed time.
gen_input [LN] > _inputfile_Generate a file named inputfile consisting of LN lines each containing one integer. If not specified, LN is assumed to be 1000000. To run a short version of this example, e.g., for use with Intel® Parallel Inspector: Build a debug version of the example (see the build instructions).
Prepare an inputfile with about 5,000 lines of text (see the instruction above).
Run it with this inputfile and the desired number of threads, e.g., square 4 inputfile outputfile.
Legal Information
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