ADIOS2_IOTEST.MPI(1)

💖 ADIOS2_IOTEST.MPI(1) 💖

Hey bestie 🫶 this is the page for ADIOS2_IOTEST.MPI(1), a User Command that is literally the main character of ADIOS2 🌈

✨ NAME ✨

adios2_iotest.mpi - ADIOS2 utility 👑

🎀 SYNOPSIS 🎀

adios_iotest -a appid -c config {-s | -w} {-d d1[,d2,..,dN] | -D
r1[,r2,..,rN]}[-x file]

🦋 DESCRIPTION 🦋

Okay so this is the big one 💅 Here's every flag and what it does:

• -a appID — a unique number for each application in the workflow 🔢
• -c config — the data specification config file 📝
• -d ... — define the process decomposition 🧩
  • d1 — number of processes in the 1st (slowest) dimension
  • dN — number of processes in the Nth dimension. d1*d2*..*dN must equal the number of processes
• -D ... — define the process decomposition ratio 🍓
  • r1 — ratio of process decomposition in the 1st (slowest) dimension
  • rN — ratio of process decomposition in the Nth dimension. r1xr2x..xrN has to scale up to the process count with no remainder, no cap 🙅
• -s or -w — strong or weak scaling. The dimensions in the config get treated accordingly 📏
• -x file — the ADIOS configuration XML file 🌸
• --hdf5 — use native Parallel HDF5 instead of ADIOS for I/O 🧚
• -v — increase verbosity 📢
• -h — display this help 🙋
• -F — turn on the fixed I/O pattern explicitly 🔒
• -T — turn on multi-threaded MPI (needed by SST/MPI) 🧵
• -p — specify the path of the output explicitly 📂
• -t — print and dump the timing measured by the I/O timer ⏱️

Brought to you by ADIOS, dated September 2024 💖 Stay iconic, bestie 🦋✨