pi_kernel

Pi calculation

This program is a simple pi=3.14159... calculation which utilizes multiple threads on the host (Zynq). Each thread offloads a seperate kernel to the default devive (Epiphany). The OMP_DEFAULT_DEVICE environmental variable may be used to offload the kernels to the Zynq cores instead.

Building

You need to have OMPi v2.0.0 or later installed. In order to build this application, simply execute:

ompicc pi.c

Usage

On esdk.2015.1, run the application executing the following command:

./a.out

For older e-SDK versions:

./run.sh

To target the Zynq or the Epiphany set the value of OMP_DEFAULT_DEVICE environmental variable to 0 or 1 correspondingly.

For example:

export OMP_DEFAULT_DEVICE="0"
export OMP_DEFAULT_DEVICE="1"
unset  OMP_DEFAULT_DEVICE    # does the obvious

License

GNU GENERAL PUBLIC LICENSE // Version 2, June 1991

Author

The OMPi Team, Parallel Processing Group, University of Ioannina