Jesse Jen, Could you try ./configure --prefix=/home/jje/mpich-install –with-device=ch4:ofi? -- Hui Zhou From: Jesse Jen via discuss <[email protected]> Date: Thursday, January 28, 2021 at 4:43 PM To: [email protected] <[email protected]> Cc: Jesse Jen <[email protected]> Subject: [mpich-discuss] Download Help I am currently downloading the latest version of mpich on a ubuntu machine. I am having trouble configuring (step 1d) as I do not understand the error messages. How do i proceed? The error message I receive at the bottom is: This is the input: root@master:/home/jje/mpich-3.4rc1# ./configure --prefix=/home/jje/mpich-install 2>&1 | tee c.txt The error message I receive at the bottom is: configure: error: no ch4 netmod selected The default ch4 device could not detect a preferred network library. Supported options are ofi (libfabric) and ucx: --with-device=ch4:ofi or --with-device=ch4:ucx Configure will use an embedded copy of libfabric or ucx if one is not found in the user environment. An installation can be specified by adding --with-libfabric=<path/to/install> or --with-ucx=<path/to/install> to the configuration. The previous MPICH default device (ch3) is also available and supported with option: --with-device=ch3 Here is a imgur link with everything in between: https://imgur.com/a/RvuALd0 Thank You