Matt, you can either
mpirun --mca btl self,vader ... or export OMPI_MCA_btl=self,vader mpirun ... you may also add btl = self,vader in your <prefix>/etc/openmpi-mca-params.conf and then simply mpirun ... Cheers, Gilles On Fri, Mar 19, 2021 at 5:44 AM Matt Thompson via users <users@lists.open-mpi.org> wrote: > > Prentice, > > Ooh. The first one seems to work. The second one apparently is not liked by > zsh and I had to do: > ❯ mpirun -mca btl '^tcp' -np 6 ./helloWorld.mpi3.exe > Compiler Version: GCC version 10.2.0 > MPI Version: 3.1 > MPI Library Version: Open MPI v4.1.0, package: Open MPI > mathomp4@gs6101-parcel.local Distribution, ident: 4.1.0, repo rev: v4.1.0, > Dec 18, 2020 > > Next question: is this: > > OMPI_MCA_btl='self,vader' > > the right environment variable translation of that command-line option? > > On Thu, Mar 18, 2021 at 3:40 PM Prentice Bisbal via users > <users@lists.open-mpi.org> wrote: >> >> OpenMPI should only be using shared memory on the local host automatically, >> but maybe you need to force it. >> >> I think >> >> mpirun -mca btl self,vader ... >> >> should do that. >> >> or you can exclude tcp instead >> >> mpirun -mca btl ^tcp >> >> See >> >> https://www.open-mpi.org/faq/?category=sm >> >> for more info. >> >> Prentice >> >> On 3/18/21 12:28 PM, Matt Thompson via users wrote: >> >> All, >> >> This isn't specifically an Open MPI issue, but as that is the MPI stack I >> use on my laptop, I'm hoping someone here might have a possible solution. (I >> am pretty sure something like MPICH would trigger this as well.) >> >> Namely, my employer recently did something somewhere so that now *any* MPI >> application I run will throw popups like this one: >> >> https://user-images.githubusercontent.com/4114656/30962814-866f3010-a44b-11e7-9de3-9f2a3b0229c0.png >> >> though for me it's asking about "orterun" and "helloworld.mpi3.exe", etc. I >> essentially get one-per-process. >> >> If I had sudo access, I suppose I could just keep clicking "Allow" for every >> program, but I don't and I compile lots of programs with different names. >> >> So, I was hoping maybe an Open MPI guru out there knew of an MCA thing I >> could use to avoid them? This is all isolated on-my-laptop MPI I'm doing, so >> at most an "mpirun --oversubscribe -np 12" or something. It'll never go over >> my network to anything, etc. >> >> -- >> Matt Thompson >> “The fact is, this is about us identifying what we do best and >> finding more ways of doing less of it better” -- Director of Better Anna >> Rampton > > > > -- > Matt Thompson > “The fact is, this is about us identifying what we do best and > finding more ways of doing less of it better” -- Director of Better Anna > Rampton
