Overview
Fluidstack Atlas is designed to provide secure and efficient front-end network communication for your workloads, leveraging VXLAN and eBPF for project isolation.
Network Isolation
Atlas enforces strong network isolation between projects. By default, instances can egress to the public internet and communicate with other instances within the same project.
Atlas multi-tenant cloud regions use a combination of VXLAN and eBPF to ensure strong network isolation between projects. Single tenant regions each have a dedicated front-end network for the whole region.
Private IPv4
Instances are assigned a dynamic ipv4 address via DHCP upon instance start. While an instance is running, the private ipv4 address can by queried via API.
Public IPv4
Instances can be assigned public IPs to enable external access. This is ideal for workloads that require public-facing endpoints.
Internal DNS
By default, all instances are configured to use the Atlas DNS nameserver. This is a highly performant CoreDNS instance with a node-local DNS cache. An A record is automatically created for all instances in a project that resolves instance names to their private ipv4 address.
RDMA
Atlas supports 3.2 Tbps Infiniband or RoCE backend networks.
RDMA is only supported on single-tenant Slurm and Kubernetes clusters.