<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false"><div><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color="">>according to </span><a href="https://slurm.schedmd.com/mpi_guide.html" style="color: rgb(106, 165, 217); text-decoration-line: underline; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#79a8cb;" data-darkreader-inline-color="" rel="nofollow" target="_blank">https://slurm.schedmd.com/mpi_guide.html </a><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color="">I have built</span><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color="">>Slurm 19.05 with PMIx support enabled and it seems to work for both,</span><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color="">>OpenMPI and Intel MPI. (I've also set MpiDefault=pmix in slurm.conf.)</span><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color="">>But I still don't get the point. Why should I favour `srun ./my_mpi_program´ </span><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color="">>over `mpirun ./my_mpi_program´? For me, both seem to do exactly the same </span><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color="">>thing. No? Did I miss something?</span><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color="">>Best regards</span><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color="">>Jürgen</span><br style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""></div><div><span style="color: rgb(215, 210, 200); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; --darkreader-inline-color:#d2cdc3;" data-darkreader-inline-color=""><br></span></div><div dir="ltr" data-setdir="false"><font color="#d2cdc3" data-darkreader-inline-color="" style="--darkreader-inline-color:#cfc8bd;">Running a single job in isolation doesn't properly illustrate what slurm does </font><span style="color: var(--darkreader-inline-color) ;">in the larger sense.</span></div><div dir="ltr" data-setdir="false"><span style="color: var(--darkreader-inline-color) ;">How do you fairly allocate and constrain the resources of an HPC </span><span style="color: var(--darkreader-inline-color) ;">installation when 1,000 jobs need</span></div><div dir="ltr" data-setdir="false"><span style="color: var(--darkreader-inline-color) ;">to run, </span><span style="color: var(--darkreader-inline-color) ;">not just 1? How do you schedule the jobs? </span><span style="color: var(--darkreader-inline-color) ;">How do you keep track of the resources used so</span></div><div dir="ltr" data-setdir="false"><span style="color: var(--darkreader-inline-color) ;">that </span><span style="color: var(--darkreader-inline-color) ;">charge-back or billing can </span><span style="color: var(--darkreader-inline-color) ;">occur? It's not about the ant -- it's about the colony.</span></div></div></div></body></html>