communicator

问题 I would like to ask why is my communicator receiving sent frames. I'm trying to fix this problem using flag PacketDeviceOpenAttributes.NoCaptureLocal for receiving communicator but I'm still receiving sent frames. Could anyone know how to fix this problem? Thank you. Here is my code: using PcapDotNet.Core; using PcapDotNet.Packets; using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using

问题 I want to easily perform collective communications indepandently on each machine of my cluster. Let say I have 4 machines with 8 cores on each, my mpi program would run 32 MPI tasks. What I would like is, for a given function: on each host, only one task perform a computation, other tasks do nothing during this computation. In my example, 4 MPI tasks will do the computation, 28 others are waiting. once the computation is done, each MPI tasks on each will perform a collective communication