# Parallel Testing in DUT

**URL:** <https://forum.opentap.io/t/parallel-testing-in-dut/1989>\
**Category:** General\
**Created:** [June 5, 2024, 6:19am UTC](https://forum.opentap.io/t/parallel-testing-in-dut/1989 "2024-06-05T06:19:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sam836](https://avatars.discourse-cdn.com/v4/letter/s/cab0a1/32.png) [@sam836](https://forum.opentap.io/u/sam836)\
**Post date:** [June 5, 2024, 6:19am UTC](https://forum.opentap.io/t/parallel-testing-in-dut/1989/1 "2024-06-05T06:19:09Z")

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Hi, I want to implement parallel testing in my production environment . for example pinging all the ips instruments together in parallel. I was going through parent child example in lightning videos, but can someone give more clarity on that. Like how the child class will be called. if i have multiple ips to ping, how to define that in tapplan. any example of tapplan where parent child is implemented?

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**Author:** ![rolf\_madsen](https://avatars.discourse-cdn.com/v4/letter/r/43a26b/32.png) [@rolf\_madsen](https://forum.opentap.io/u/rolf_madsen)\
**Post date:** [June 6, 2024, 1:18pm UTC](https://forum.opentap.io/t/parallel-testing-in-dut/1989/2 "2024-06-06T13:18:30Z")

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Hi @sam836,

I am currently working on some documentation around threading it might be helpful providing some of the information you are looking for: [opentap/doc/Developer Guide/Appendix A/Readme.md at b0d58c0c6909650ec17e76785b16d305e5515349 · opentap/opentap · GitHub](https://github.com/opentap/opentap/blob/b0d58c0c6909650ec17e76785b16d305e5515349/doc/Developer%20Guide/Appendix%20A/Readme.md#threading-and-parallel-processing)

Note, more info will be added to the PR soon.