diff --git a/doc/Section_start.html b/doc/Section_start.html index 5e8634cbb0..f438472b2f 100644 --- a/doc/Section_start.html +++ b/doc/Section_start.html @@ -923,32 +923,6 @@ the LAMMPS gpu library for single vs double precision. The latter requires that your GPU card supports double precision. The lj/cut/gpu pair style does not support double precision.

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GPU Memory -

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There are restrictions on the number of atoms per GPU when running -the gayberne/gpu pair style. Upon initialization of the gayberne/gpu -pair style, LAMMPS will reserve memory for 64K atoms per GPU or 70% -of each card's GPU memory, whichever value is limiting. If the GPU -library is compiled for double precision, the maximum number of -atoms per GPU is 32K. When running a periodic system and/or in -parallel, this maximum atom count includes ghost atoms. -

-

The value of 70% can be changed by editing the PERCENT_GPU_MEMORY -definition in the appopriate lammps/lib/gpu source file. For the -gayberne/gpu pair style, the value of 64K cannot be increased and is -the maximum number of atoms allowed per GPU. By default, enough -memory to store at least the maximum number of neighbors per atom is -reserved on the GPU, which is set by the -neigh_modify one command. The default value of -2000 will be very high for many cases. If memory on the graphics card -is limiting, the number of atoms allowed can be increased by -decreasing the maximum number of neighbors. For example placing, -

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neigh_modify one 100 
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-

in the input script will decrease the maximum number of neighbors per -atom to 100, allowing more atoms to be run on the GPU. -

2.9 Tips for users of previous LAMMPS versions diff --git a/doc/Section_start.txt b/doc/Section_start.txt index d993fbaf31..1537cdd069 100644 --- a/doc/Section_start.txt +++ b/doc/Section_start.txt @@ -916,32 +916,6 @@ the LAMMPS gpu library for single vs double precision. The latter requires that your GPU card supports double precision. The lj/cut/gpu pair style does not support double precision. -GPU Memory :h4 - -There are restrictions on the number of atoms per GPU when running -the gayberne/gpu pair style. Upon initialization of the gayberne/gpu -pair style, LAMMPS will reserve memory for 64K atoms per GPU or 70% -of each card's GPU memory, whichever value is limiting. If the GPU -library is compiled for double precision, the maximum number of -atoms per GPU is 32K. When running a periodic system and/or in -parallel, this maximum atom count includes ghost atoms. - -The value of 70% can be changed by editing the PERCENT_GPU_MEMORY -definition in the appopriate lammps/lib/gpu source file. For the -gayberne/gpu pair style, the value of 64K cannot be increased and is -the maximum number of atoms allowed per GPU. By default, enough -memory to store at least the maximum number of neighbors per atom is -reserved on the GPU, which is set by the -"neigh_modify one"_neigh_modify.html command. The default value of -2000 will be very high for many cases. If memory on the graphics card -is limiting, the number of atoms allowed can be increased by -decreasing the maximum number of neighbors. For example placing, - -neigh_modify one 100 :pre - -in the input script will decrease the maximum number of neighbors per -atom to 100, allowing more atoms to be run on the GPU. - :line 2.9 Tips for users of previous LAMMPS versions :h4,link(2_9)