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Description: Run MPI tests explicitly on localhost instead of hostname
In the default configuration, MPICH tests will fail in a network-restricted
environment where gethostbyname() does not return a valid address. As a
workaround, this passes an explicit "-host localhost" to mpirun for the test
suite only.
Author: Nicholas Breen <nbreen@debian.org>
Last-Update: 2022-11-20
Forwarded: not-needed
Index: gromacs/cmake/gmxManageMPI.cmake
===================================================================
--- gromacs.orig/cmake/gmxManageMPI.cmake
+++ gromacs/cmake/gmxManageMPI.cmake
@@ -161,7 +161,7 @@ if (NOT MPIEXEC_EXECUTABLE)
set(MPIEXEC_EXECUTABLE "$MPIEXEC")
set(MPIEXEC_NUMPROC_FLAG "-np" CACHE STRING "Flag used by MPI to specify the number of processes for MPIEXEC; the next option will be the number of processes.")
- set(MPIEXEC_PREFLAGS "" CACHE STRING "These flags will be directly before the executable that is being run by MPIEXEC.")
+ set(MPIEXEC_PREFLAGS "-host;localhost" CACHE STRING "These flags will be directly before the executable that is being run by MPIEXEC.")
set(MPIEXEC_POSTFLAGS "" CACHE STRING "These flags will come after all flags given to MPIEXEC.")
set(MPIEXEC_MAX_NUMPROCS "2" CACHE STRING "Maximum number of processors available to run MPI applications.")
mark_as_advanced(MPIEXEC MPIEXEC_NUMPROC_FLAG MPIEXEC_PREFLAGS MPIEXEC_POSTFLAGS MPIEXEC_MAX_NUMPROCS)
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