HPC Challenge is a collection of benchmarks for measuring various aspects of system performance, such as flop/s, sustainable memory bandwidth, memory read/write rates, network bandwidth, and latency for parallel machines. It is designed for supercomputers, but will run on any computer with MPI-1 (Message Passing Interface) implementation and BLAS (Basic Linear Algebra Subprograms).
Hammerhead is a stress testing tool for Web sites. It initiates connections from multiple IP aliases and simulates a user from each alias. It is fully configurable, and there are numerous other options for creating problems with a site. Extensive data collection is also available.
The IOR software is used for benchmarking parallel file systems using POSIX, MPIIO, or HDF5 interfaces. It can be used for testing the performance of parallel file systems using various interfaces and access patterns. IOR uses MPI for process synchronization. It also includes scripts for simulating the I/O behavior of a number of parallel applications.