since the code uses static ids, only one instance is allowed at a time (b6821ed9) · Commits · 郑智淋 / lammps

src/USER-MISC/fix_bond_react.cpp

+4 −0

Original line number	Diff line number	Diff line
		@@ -85,6 +85,10 @@ Fix(lmp, narg, arg)
		// these group names are reserved for use exclusively by bond/react
		master_group = (char *) "bond_react_MASTER_group";

		// by using fixed group names, only one instance of fix bond/react is allowed.
		if (modify->find_fix_by_style("bond/react") != -1)
		error->all(FLERR,"Only one instance of fix bond/react allowed at a time");

		// let's find number of reactions specified
		nreacts = 0;
		for (int i = 3; i < narg; i++) {