Cray EX235a is the blade for Cray EX platforms that hosts an AMD Trento CPU and four AMD MI250X GPUs.
Each blade has two nodes, and each node has1
- 1x AMD Trento CPU
- Up to 512 GB DDR4 DRAM
- Up to 2x NVMe SSDs
- 4x AMD MI250X GPUs
- Up to 4x Slingshot-11 NICs
These nodes are unique for a few reasons:
- AMD Trento is a modified version of AMD Milan that has Infinity Fabric connections to the MI250X GPUs, allowing the GPUs’ HBM to be cache coherent with CPU memory.
- The Slingshot-11 PCIe NICs are attached to the GPUs’ PCIe ports, not the CPU’s.