README.md

Ping Custom Op

This example builds on top of the ping_simple example to demonstrate how to create your own custom operator.

There are three operators involved in this example (tx -> mx -> rx):

1. a transmitter, set to transmit a sequence of integes from 1-10 to it's 'out' port
2. a middle operator that prints the received values, multiplies by a scalar and transmits the modified values
3. a receiver that prints the received values to the terminal

Visit the SDK User Guide for step-by-step documentation of this example.

C++ Run instructions

• using deb package install or NGC container:

  /opt/nvidia/holoscan/examples/ping_custom_op/cpp/ping_custom_op

• source (dev container):

  ./run launch # optional: append `install` for install tree
  ./examples/ping_custom_op/cpp/ping_custom_op

• source (local env):

  ${BUILD_OR_INSTALL_DIR}/examples/ping_custom_op/cpp/ping_custom_op

Python Run instructions

• using python wheel:

  # [Prerequisite] Download example .py file below to `APP_DIR`
  # [Optional] Start the virtualenv where holoscan is installed
  python3 <APP_DIR>/ping_custom_op.py

• from NGC container:

  python3 /opt/nvidia/holoscan/examples/ping_custom_op/python/ping_custom_op.py

• source (dev container):

  ./run launch # optional: append `install` for install tree
  python3 ./examples/ping_custom_op/python/ping_custom_op.py

• source (local env):

  export PYTHONPATH=${BUILD_OR_INSTALL_DIR}/python/lib
  python3 ${BUILD_OR_INSTALL_DIR}/examples/ping_custom_op/python/ping_custom_op.py