Merge pull request #91 from JordiManyer/bugfix-mpiexec-with-subcommun…

…icator Bugfix: Executing programs within a subcommunicator of COMM_WORLD
fverdugo · Jan 17, 2023 · d069a5f · d069a5f
2 parents 6e7d42e + b501814
commit d069a5f
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Showing 2 changed files with 5 additions and 2 deletions.
diff --git a/src/MPIBackend.jl b/src/MPIBackend.jl
@@ -95,8 +95,10 @@ function with_backend(driver,b::MPIBackend,nparts,args...;kwargs...)
     driver(part,args...;kwargs...)
   else
     try
-       part = get_part_ids(b,nparts)
-       driver(part,args...;kwargs...)
+      part = get_part_ids(b,nparts)
+      if i_am_in(part)
+        driver(part,args...;kwargs...)
+      end
     catch e
       @error "" exception=(e, catch_backtrace())
       if MPI.Initialized() && !MPI.Finalized()

diff --git a/test/mpi/InterfacesTests.jl b/test/mpi/InterfacesTests.jl
@@ -2,5 +2,6 @@ module InterfacesTests
 
 include("mpiexec.jl")
 run_mpi_driver(procs=4,file="driver_interfaces.jl")
+run_mpi_driver(procs=6,file="driver_interfaces.jl")
 
 end # module