Re: [OMPI users] Performing partial calculation on a single node in an MPI job

I should have been more precise: you cannot use Fortran's vector subscript with Open MPI. George. On Mon, Oct 17, 2016 at 2:19 PM, Jeff Hammond wrote: > George: > > http://mpi-forum.org/docs/mpi-3.1/mpi31-report/node422.htm > > Jeff > > On Sun, Oct 16, 2016 at 5:44 PM,

Re: [OMPI users] Problem with double shared library

Sean, if i understand correctly, your built a libtransport_mpi.so library that depends on Open MPI, and your main program dlopen libtransport_mpi.so. in this case, and at least for the time being, you need to use RTLD_GLOBAL in your dlopen flags. Cheers, Gilles On 10/18/2016 4:53

[OMPI users] openmpi-1.10.3 cross compile configure options for arm-openwrt-linux-muslgnueabi on x86_64-linux-gnu

Hi everyone, I'm trying to cross compile openmpi-1.10.3 for arm-openwrt-linux-muslgnueabi on x86_64-linux-gnu with below configure options... ./configure --enable-orterun-prefix-by-default --prefix="/home/nmahesh/Workspace/ARM_MPI/openmpi" --build=x86_64-linux-gnu --host=x86_64-linux-gnu

Re: [OMPI users] Performing partial calculation on a single node in an MPI job

George: http://mpi-forum.org/docs/mpi-3.1/mpi31-report/node422.htm Jeff On Sun, Oct 16, 2016 at 5:44 PM, George Bosilca wrote: > Vahid, > > You cannot use Fortan's vector subscript with MPI. > -- Jeff Hammond jeff.scie...@gmail.com http://jeffhammond.github.io/

Re: [OMPI users] communications groups

Designation: Non-Export Controlled Content George; Thanks for your response. Your second sentence is a little confusing. If my world group is P0,P1, visible on both processes, why wouldn't the sensorList contain P1 on both processes? Rick From: users

Re: [OMPI users] communications groups

Rick, So you have three types of tasks - 1 dispatcher - several sensors - several proxies If proxies do not communicate with each other, and if sensors do not communicate with each other, then you could end up with 3 inter communicators sensorComm: dispatcher in the left group and sensors in the

Re: [OMPI users] communications groups

Rick, In my understanding, sensorgroup is a group with only task 1 Consequently, sensorComm is - similar to MPI_COMM_SELF on task 1 - MPI_COMM_NULL on other tasks, and hence the barrier fails I suggest you double check sensorgroup is never MPI_GROUP_EMPTY and add a test not to call MPI_Barrier

Re: [OMPI users] communications groups

Designation: Non-Export Controlled Content Gilles; My scenario involves a Dispatcher of rank 0, and several sensors and proxy objects. The Dispatcher triggers activity and gathers results. The proxies get triggered first. They send data to the sensors, and the sensors indicate

Re: [OMPI users] communications groups

Rick, I re-read the MPI standard and was unable to figure out if sensorgroup is MPI_GROUP_EMPTY or a group with task 1 on tasks except task 1 (A group that does not contain the current task makes little sense to me, but I do not see any reason why this group have to be MPI_GROUP_EMPTY)

Re: [OMPI users] communications groups

Designation: Non-Export Controlled Content Gilles; Yes, your assumption is correct. No communication between proxies and no communications between sensors. I am using rank to determine role. Dispatcher being 0. Sensors start at 1. So I should have 3 groups? I am new to MPI and

[OMPI users] Problem with double shared library

Folks, For our code, we have a communication layer that abstracts the code that does the actual transfer of data. We call these "transports", and we link them as shared libraries. We have created an MPI transport that compiles/links against OpenMPI 2.0.1 using the compiler wrappers. When I