notes.md

• Compiler flags for mpicc:
  • showme
    • showme:compile; showme:link
• use man mpicc: for all other options.
• strong scaling: fix problem size and change no. of processors (Amdahl's law)
• weak scaling: fix problem size for each processor i.e. scale the problem as processors increase
• Gustafson's law

OpenMP

• Scheduling: changing the data distribution.
  • #pragma omp parallel for schedule(schedule-type, chunk-size)
  • Options for schedule-type: