Using NVMe on Summit

Created by: jychoi-hpc

I am trying to write data to VNMEs on Summit (i.e., each process write own data to the local SSDs) but getting the following error:

ERROR: couldn't open file restart_dir/xgc.restart.f0.00005.bp.dir//xgc.restart.f0.00005.bp.6, check permissions or path existence, in call to POSIX open

It look like ADIOS didn't create a directory for subfiles (at least one process per node need to create a directory for subfiles before others writing).