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Is there a drawback when using a chroot in high performance computing?

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linux-howto

http://unix.stackexchange.com – My (small) company uses an out-of-date linux (centos) software stack to run a proprietary software on a small cluster. Understandingly, IT is reluctant to upgrade since everything works now. I'd like to do some performance tests on these machines and plan to install a lot of software that shouldn't interfere with the production root. It also includes compiling scientific packages and therefor I need up-to-date libraries. One possiblity is to install an entire up-to-date root in a different location and chroot into it. My question is: How will this impact the performance of the tools running (HowTos)