SONAR

A custom benchmark for I/O systems

The purpose of this benchmark is to simulate different I/O patterns with configurable parameters in order to test the performance for I/O systems. Initial development of Sonar is intended for to testing the LABIOS I/O system. By obtaining performance metrics, the optimal configurations of different I/O systems can be discovered.

Building

In order to compile Sonar generically, use the command:

mpicxx -o sonar sonar.cpp

or, for usage with LABIOS, use:

mpicxx -o sonar sonar.cpp -llabios -lnats -lmemcached

Configurable parameters:

• Application Workload
  • Type of Workload (input as # of reads, # of writes)
    • Read Heavy
    • Write Heavy
    • Read Only
    • Write Only
    • Mixed
  • Access pattern
    • Sequential
    • Random
    • Strided
      • Stride length
  • Operation Count
    • Examples:
      • 1000 iterations, 10 requests, 1 access-per-request
      • 10 iterations, 1000 requests, 2 accesses-per-request
      • 505 iterations, 505 requests, 1 access-per-request
  • Size of I/O request (input as lower and upper bound)
    • 4 to 8K
    • 64K to 512K
    • 1M to 16M
    • Distribution (future work)
      • Uniform
      • Normal
      • Gamma
      • Random
  • Scaling
    • # of nodes
      • 1, 2, 4, 8
    • # of processors per node
      • 4, 8, 16, 32
  • Compute
    • Inter-Iteration compute
    • Inter-Operation compute
  • Compute Intensity
    • No compute
    • Sleep-simulated ("busy waiting")
      • Sleep duration
    • Traditional
      • Matrix Multiplication
• Output log file (.csv)