not using the GPU well

[dorothyzh]

I already set the GPU parameters to be true:
train_opts$gpu_mode=TRUE
###################---------part of the log
Model options:

• Automatic Relevance Determination prior on the factors: True
• Automatic Relevance Determination prior on the weights: True
• Spike-and-slab prior on the factors: False
• Spike-and-slab prior on the weights: False
  Likelihoods:
• View 0 (metabolomics_CSF): gaussian
• View 1 (metabolomics_Serum): gaussian
• View 2 (proteomics_CSF): gaussian
• View 3 (proteomics_Serum): gaussian
  GPU mode is activated
  ###################---------part of the log end
  However, when I check the GPU usage, it is not properly used: