Hello All,
I'm trying to get a handle on providing Open MPI with cuda capability for my users. I've been through the FAQ items having to do with cuda, but I still have some questions that I hope those with more experience in this area will be able to answer. I'm currently working with Open MPI version 2.1.2. First, under what circumstances does Open MPI load libcuda.so at runtime? With my non-cuda tests, it seems that Open MPI doesn't touch it. Does it only load it under certain circumstances? Second, when Open MPI does load libcuda.so, how does it find it? Does it just pull from the environment or is it looking on a specific path? Third, does Open MPI need anything else beyond libcuda.so? Like anything from the cudatoolkit libraries? Thank you all in advance for the help! David -- HPC Environments Los Alamos National Lab
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