Request for adding profiling tool lo2s

[rschoene]

lo2s is hosted at https://github.com/tud-zih-energy/lo2s
It writes OTF2 files and records (quote from the lo2s-Readme)

• From running threads
  • Calling context samples based on instruction overflows
  • The calling context samples are annotated with the disassembled assembler instruction string
  • The framepointer-based call-path for each calling context sample
  • Per-thread performance counter readings
  • Which thread was scheduled on which CPU at what time
  • Information about executed OpenMP constructs
  • Accelerator activity events from NVidia and AMD GPUs as well as NEC SX-Aurora Vector Engines
  • Application level I/O activity
• From the system
  • Metrics from tracepoints (e.g. the selected C-state or P-state)
  • The node-level system tree (cpus (HW-threads), cores, packages)
  • CPU power measurements (x86_energy)
  • Microarchitecture specific metrics (x86_adapt, per package or per core)
  • Hardware sensors using lm_sensors
  • Arbitrary metrics through plugins (Score-P compatible)
  • Syscall activity
  • Block layer I/O activity

(added a comment to an empty field in the TODO sheet of the google doc)