Jetfs
Reading binary files from jetfs (GPFS) is slower than reading files from raid61 mounted via NFS.
Example:
file size: 119 MB
ERA5 Output, converted to binary flexpart input.
Using nfs:
Reading part_traj before: 12.2229996 seconds
Reading part_traj: 16.8910007 seconds
using gpfs:
Reading part_traj before: 12.3990002 seconds
Reading part_traj: 52.1180000 seconds
takes about 36 seconds longer!!!
Affected: @baierk20
This is a fortran routine, that reads files into memory and processes them. Here the same files are used, but different locations.