Memory

Generally, the amount of installed memory should be proportional to the number of CPUs in the cluster, although the exact amount depends significantly on the particulars of the target application mix.

For example, at a minimum, a Sun Ultra HPC 2 (two-processor) system should have 256 MBytes of memory.

Generally speaking, computationally intensive Sun HPC applications that process data with some amount of locality of access often benefit from larger external caches on their processor modules. Large cache capacity allows data to be kept closer to the processor for longer periods of time.