Re: [OMPI users] Memory mapped memory

Hello, I have tried to run the executable "wrf.exe", using mpirun -machinefile /tmp/108388.1.par2/machines -np 4 wrf.exe but, I've got the following error: -- mpirun noticed that process rank 1 with PID 9942 on node

Re: [OMPI users] Memory mapped memory

Sure, this is possible and generally works, although it is not defined by the MPI standard. Regular shared memory rules apply: you may have to add additional memory consistency and/or synchronization calls depending on your platform to ensure that MPI sees intended data updates. Best, ~Jim. On

Re: [OMPI users] Memory mapped memory

If the mmap() pages are created with MAP_SHARED, then they should be sharable with other processes in the same node, isn't it? MPI processes are just like any other process, aren't they? Will one of the MPI Gurus please comment? Regards Durga On Mon, Oct 17, 2011 at 9:45 AM, Gabriele Fatigati

Re: [OMPI users] Memory mapped memory

More in detail, is it possible use mmap() function from MPI process and sharing these memory between others processes? 2011/10/13 Gabriele Fatigati > Dear OpenMPI users and developers, > > is there some limitation or issues to use memory mapped memory into MPI >

[OMPI users] Memory mapped memory

Dear OpenMPI users and developers, is there some limitation or issues to use memory mapped memory into MPI processes? I would like to share some memory in a node without using OpenM. Thanks a lot. -- Ing. Gabriele Fatigati HPC specialist SuperComputing Applications and Innovation Department