ICODE-ADC/lammps
4
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

use -mpicolor flag as documented (and not -mpi). closes #2575

Browse Source
This commit is contained in:
Axel Kohlmeyer
2021-02-02 14:12:46 -05:00
parent 4404469f5c
commit 1da3ba87f4
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/lammps.cpp
View File

@ -129,13 +129,13 @@ LAMMPS::LAMMPS(int narg, char **arg, MPI_Comm communicator) :
init_pkg_lists();
// check if -mpi is first arg
// check if -mpicolor is first arg
// if so, then 2 apps were launched with one mpirun command
// this means passed communicator (e.g. MPI_COMM_WORLD) is bigger than LAMMPS
// e.g. for client/server coupling with another code
// in the future LAMMPS might leverage this in other ways
// universe communicator needs to shrink to be just LAMMPS
// syntax: -mpi color
// syntax: -mpicolor color
// color = integer for this app, different than other app(s)
// do the following:
// perform an MPI_Comm_split() to create a new LAMMPS-only subcomm
@ -145,7 +145,7 @@ LAMMPS::LAMMPS(int narg, char **arg, MPI_Comm communicator) :
// cscomm is used by CSLIB package to exchange messages w/ other app
int iarg = 1;
if (narg-iarg >= 2 && (strcmp(arg[iarg],"-mpi") == 0 ||
if (narg-iarg >= 2 && (strcmp(arg[iarg],"-mpicolor") == 0 ||
strcmp(arg[iarg],"-m") == 0)) {
int me,nprocs;
MPI_Comm_rank(communicator,&me);