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rLAMMPS lammps
notes.1
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Compiling LAMMPS under MS Windows:
Tips from Jin Ma at Oklahoma State Univerisity
jin.ma@okstate.edu
November 20, 2004
compiled without MPI and FFT in Viusal C++ 6.0
-------------------
0. Create an empty workspace (Win32 console), add all .h and .cpp
files into the project.
1. At about 80 places in the code, variables are redefined. Most of
these variables are loop counters, which can be easily fixed.
Code looks like this:
for (int i=0; i<5; i++) {
something;
}
for (int i=0; i<5; i++) {
something else;
}
This is ok with g++ compiler. But VC thinks the i is redefined in the
second loop. So the variable scope is different. This happens many times
in the code. It can be fixed easily based on the compiling error.
2. At the beginning of fft3d.h, added:
#ifndef FFT_NONE
#define FFT_NONE
#endif
3. In input.cpp, changed the two header files
//#include "unistd.h"
#include "direct.h"
4. Added mpi.h and mpi.cpp (in STUBS folder) to the workspace
In mpi.cpp, commented the time.h header file
//#include <sys/time.h>
commented the original code in MPI_Wtime(), just make it return 0;
5. In system.cpp, two changes due to difference in the input argument
list
Line 82: int iarg = 2;
Line 171: inflag=1;
The number of input arguments (nargs) is different in g++ and VC when
you give arguments to run a program. This might be related to MPI as
well. The difference is one. Once the above changes are made, the
program is taking the correct argument.
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