HPC Challenge is a benchmark suite that measures a range memory access patterns. Source code repository of the benchmark is located at HPCC SourceForge and HPCC@BitBucket pages.

The HPC Challenge benchmark consists of basically 7 tests:

1. HPL – the Linpack TPP benchmark which measures the floating point rate of execution for solving a linear system of equations.
2. DGEMM – measures the floating point rate of execution of double precision real matrix-matrix multiplication.
3. STREAM – a simple synthetic benchmark program that measures sustainable memory bandwidth (in GB/s) and the corresponding computation rate for simple vector kernel.
4. PTRANS (parallel matrix transpose) – exercises the communications where pairs of processors communicate with each other simultaneously. It is a useful test of the total communications capacity of the network.
5. RandomAccess – measures the rate of integer random updates of memory (GUPS).
6. FFT – measures the floating point rate of execution of double precision complex one-dimensional Discrete Fourier Transform (DFT).
7. Communication bandwidth and latency- a set of tests to measure latency and bandwidth of a number of simultaneous communication patterns; based on b_eff (effective bandwidth benchmark).