IOR - with MPIIO

Get IOR:

git clone https://github.com/hpc/ior.git

Build:

After configure and building MPICH (see directions here):

• cd ior/
• ./bootstrap
• mkdir build; cd build;

• MPICC=mpicc ../configure --with-mpiio

• make

Run:

Launch server(s)

Using all the directions from this page for client side execution:

1. create pool with dmg and export related env variables

2. cd into the ior build dir from above

3. cd src/

4. mpirun -np 8 --hostfile ~/cli_hosts  ./ior -a MPIIO -w -W -r -R -t 1m -b 1g -o daos:testFile -V -S -C -c

5. the ior options can be varied for different MPI-IO configurations:

   1. The main option is the file name to include daos: prefix to use the MPI-IO DAOS ADIO driver

   2. -w -W -r -R

   3. -k (keep file) then relaunch with -r -R to check data after relaunch

   4. -F for file per process (default is single shared file)

   5. -C change task order for data read back

   6. -c for using MPI-IO collective IO calls

   7. -V for using MPI file views

   8. -S to indicate strided IO pattern

Status:

Passing / Should Pass all tests