GPUAwareMPI
GPUAwareMPI
Section Execution::Accel
Type logical
If Octopus was compiled with GPU support and MPI support and if the MPI
implementation is GPU-aware (i.e., it supports communication using device pointers),
this switch can be set to true to use the GPU-aware MPI features. The advantage
of this approach is that it can do, e.g., peer-to-peer copies between devices without
going through the host memory.
The default is false, except when the configure switch –enable-cudampi is set, in which
case this variable is set to true.