Piz Daint

All data presented here are based on measurements from realistic calculations executed on Piz Daint system, within PRACE grants.

Cost scalings

Static code (st-wslda-2d)

• Raw data: st-piz-daint-scaling.txt
• Gnuplot script: st-piz-daint-scaling.gp

Time-dependent code (td-wslda-2d)

• Raw data: td-piz-daint-scaling-1.txt
• Gnuplot script: td-piz-daint-scaling-1.gp
  

I/O performance

Reading checkpoint

# CHECKPOINT INFO: MODE=READ: DATA SIZE=     5539.54 GB
# CHECKPOINT INFO: MPI_NP_PER_IO_GROUP=24.
# CHECKPOINT INFO: READ TIME=       67.51 sec
# CHECKPOINT INFO: READ SPEED=      82.055 GB/sec

Writing checkpoint

# CHECKPOINT INFO: MODE=WRITE: DATA SIZE=     5539.54 GB
# CHECKPOINT INFO: MPI_NP_PER_IO_GROUP=24.
# CHECKPOINT INFO: WRITE TIME=       75.60 sec
# CHECKPOINT INFO: WRITE SPEED=      73.274 GB/sec