This is for recreating the read time issue reported in

openPMD/openPMD-viewer#400 

openPMD/openPMD-viewer#380 


frontier data:
   /lustre/orion/csc143/scratch/junmin/2024-may/Test/issue380/diags/

perlmutter data:
  /pscratch/sd/j/junmin/perlmutter/Jan2024/Test/issue380/bp5-f/
  /pscratch/sd/j/junmin/perlmutter/Jan2024/Test/issue380/bp5-v/
  /pscratch/sd/j/junmin/perlmutter/Jan2024/Test/issue380/h5-f/
  

warpx input used to generated bp files (file based)
  ./warpx/input_3d_bp5