Re: [gmx-users] Force Calculation - SBLOCKS

2007-06-22 Thread David van der Spoel
Mark Abraham wrote: Justin M. Shorb wrote: Greetings! I have been running gromacs to simulate a chromophore (NMAd) in water. I have verified that the coulombic force is calculated correctly by doing a rerun of the simulation trajectory and extracting the forces from a forcefield of vanishing

Re: [gmx-users] Force Calculation - SBLOCKS

2007-06-21 Thread Mark Abraham
Justin M. Shorb wrote: Greetings! I have been running gromacs to simulate a chromophore (NMAd) in water. I have verified that the coulombic force is calculated correctly by doing a rerun of the simulation trajectory and extracting the forces from a forcefield of vanishing force constants (thu

[gmx-users] Force Calculation - SBLOCKS

2007-06-21 Thread Justin M. Shorb
Greetings! I have been running gromacs to simulate a chromophore (NMAd) in water. I have verified that the coulombic force is calculated correctly by doing a rerun of the simulation trajectory and extracting the forces from a forcefield of vanishing force constants (thus removing all vdW and

Re: [gmx-users] Force Calculation

2006-06-29 Thread Erik Lindahl
Hi, Where I've gotten is to: /src/gmxlib/nonbonded/nonbonded.c which calls the machine specific kernels. I am more than willing to work through this myself, but can anybody point me to a good book/site that explains what is actually going on when Gromacs looks up these forces? Try r

Re: [gmx-users] Force Calculation

2006-06-28 Thread Mark Abraham
Justin M. Shorb wrote: Greetings! I have managed to hack through all the Gromacs code and at the bottom of it all are machine-run look up tables. Does anyone know of where I can find the organization of these tables and the way they are called through the program? Or possibly, if anybody has

[gmx-users] Force Calculation

2006-06-28 Thread Justin M. Shorb
Greetings! I have managed to hack through all the Gromacs code and at the bottom of it all are machine-run look up tables. Does anyone know of where I can find the organization of these tables and the way they are called through the program? Or possibly, if anybody has written their own code