# Issue for install Freefem on aws ubuntu 20.04

**URL:** https://community.freefem.org/t/issue-for-install-freefem-on-aws-ubuntu-20-04/2661
**Category:** FreeFEM installation
**Created:** [August 18, 2023, 9:25pm UTC](https://community.freefem.org/t/issue-for-install-freefem-on-aws-ubuntu-20-04/2661 "2023-08-18T21:25:37Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![zcwang6](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/zcwang6/32/371_2.png) [@zcwang6](https://community.freefem.org/u/zcwang6)
#### Post date: [August 18, 2023, 9:25pm UTC](https://community.freefem.org/t/issue-for-install-freefem-on-aws-ubuntu-20-04/2661/1 "2023-08-18T21:25:37Z")

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Hello I install Freefem on AWS with ubuntu 20.04, however when I test it with freefem to cout all the mpirank. they all print as 0, " ‘/usr/bin/mpiexec’ -np 4 /home/ubuntu/bin/FreeFem+±mpi -nw ‘TEST.edp’ -ne -v 0

hello I am mpirank 0

hello I am mpirank 0

hello I am mpirank hello I am mpirank 0

0" . I test the mpicc and mpirun with sample codes which it is okay. I was wondering if you guys have any experience with it thank you.

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### Author: ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)
#### Post date: [August 24, 2023, 4:30am UTC](https://community.freefem.org/t/issue-for-install-freefem-on-aws-ubuntu-20-04/2661/2 "2023-08-24T04:30:04Z")

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You are using two different MPI implementations.