topic Re: command not recognized when setting up Intel MPI Library in Intel® Fortran Compiler

command not recognized when setting up Intel MPI Library

zhzhu1218 — Wed, 14 Jun 2023 17:11:43 GMT

Hello,

I used to work with MPI codes using Intel Parallel Studio + VS 2019 + Fortran, and just updated to openAPI + VS 2022 + Fortran. When following the guide here (https://www.intel.com/content/www/us/en/docs/mpi-library/get-started-guide-windows/2021-6/overview.html) to set up the updated Intel MPI Library, I get through the first two steps (hydra_service -install; hydra_service -start). But when I key in mpiexec -register, the command prompt pops out '-register' is not recognized as an internal or external command, operable program, or batch file.

Am I making a silly mistake here?

Thanks!

Re: command not recognized when setting up Intel MPI Library

Ron_Green — Wed, 14 Jun 2023 19:08:30 GMT

I think that documentation may be out of date. My research shows that you should no longer need to do that -register step to enter your username/password credentials.

Try running MPI jobs. It should work without the -register step/

Re: command not recognized when setting up Intel MPI Library

zhzhu1218 — Wed, 14 Jun 2023 19:23:01 GMT

Thanks Ron (truly appreciate your help so far with the multiple questions I've been facing when setting things up)! I tried running a simple hello world MPI job, but somehow it only runs with one thread (see first attached image for the result) despite me specifying the program to use 4 threads in the command arguments (as shown in the 2nd attached image). Any idea why this is happening?

Re: command not recognized when setting up Intel MPI Library

zhzhu1218 — Wed, 14 Jun 2023 19:25:20 GMT

ps. Here's the relevant part of the program I'm running