Gilles, For some odd reason, 'self, vader' didn't seem as effective as "^tcp". Not sure why, but at least I have something that seems to work.
I suppose I don't really need tcp sockets on a single laptop :D Matt On Thu, Mar 18, 2021 at 8:46 PM Gilles Gouaillardet via users < users@lists.open-mpi.org> wrote: > 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 > -- 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
