The discovery test cluster was designed to experiment several different hardware combinations in prevision to invest in our current flagship machine octopus.
discovery was originally one multi-GPU node equipped with 4 Nvidia GeForce GTX Titan (6 GB) GPUs, 2 Intel Xeon Ivy Bridge processors and 64 GB DDR3 RAM. This node was designed to optimise memory bandwidth and assembled mainly with consumer electronic parts.
In a second step, an additional GPU node was added to the system, equipped with 4 Nvidia GeForce GTX Titan Black (6 GB) GPUs, 2 Intel Xeon Ivy Bridge processors and 64 GB DDR3 RAM.
In a final step a node containing 4 MIC was added to the already existing two GPU nodes. This last add-on consist of a dual-cpu Supermicro motherboard equipped with 4 Intel Xeon Phi 5110P Many Integrated Cores (MIC), 2 Intel Xeon Ivy Bridge processors and also 64 GB DDR3 RAM. The login node consists of a standard server workstation, featuring one Intel Core i5, and 16 GB DDR3 RAM.
No fast interconnect is used for inter-node communication. Regular 10GBit Ethernet is installed. The purpose of this heterogenous cluster is to test the intra-node performance.
CentOS 6.5 is installed