Amd

SEV-SNP is AMD’s third-generation confidential computing technology for EPYC processors, and the generation in production use across major cloud providers (AWS, Google Cloud) and Linux distributions today. It builds on two predecessors: SEV (2016), which encrypted each VM’s memory with a per-VM AES key managed by the AMD Secure Processor, and SEV-ES (2017), which additionally encrypted CPU register state on VM exit to prevent the hypervisor from reading guest execution state. SEV-SNP’s defining addition is memory integrity: using Secure Nested Paging, the firmware enforces that if a guest can read an encrypted memory location, the value returned must be exactly what the guest last wrote there — closing the replay, remap, and memory aliasing attacks that made earlier generations insufficient for a fully untrusted hypervisor threat model.

ROCm (Radeon Open Compute) is AMD’s software stack for GPU compute on datacenter Instinct accelerators (and select consumer GPUs in community setups). Its objective mirrors CUDA for NVIDIA: provide kernel compilers (HIP), math libraries (rocBLAS, rocFFT), collective communication (RCCL, analogous to NCCL), and framework integrations so PyTorch and inference runtimes can execute training and inference on AMD hardware. ROCm is positioned as an open platform (Linux-first) for customers who want accelerator choice or who standardize on AMD in HPC and AI clusters.