4 CSIT is using C5n instances for high compute applications that can take
5 advantage of improved network throughput and packet rate performance. C5n
6 instances offers up to 100 Gbps network bandwidth and increased memory over
7 comparable C5 instances [aws_it]_.
11 - 3.0 GHz Intel Xeon Platinum processors with Intel Advanced Vector Extension
12 512 (AVX-512) instruction set.
13 - Sustained all core Turbo frequency of up to 3.4GHz, and single core turbo
14 frequency of up to 3.5 GHz.
15 - Requires HVM AMIs that include drivers for ENA and NVMe [aws_ena]_.
16 - Network bandwidth increases to up to 100 Gbps, delivering increased
17 performance for network intensive applications.
18 - Powered by the AWS Nitro System, a combination of dedicated hardware and
19 lightweight hypervisor.
21 +-------------+------+--------------+------------------------+-----------------------------+----------------------+
22 | Model | vCPU | Memory (GiB) | Instance Storage (GiB) | Network Bandwidth (Gbps)*** | EBS Bandwidth (Mbps) |
23 +=============+======+==============+========================+=============================+======================+
24 |c5n.large | 2 | 5.25 | EBS-Only | Up to 25 | Up to 4,750 |
25 +-------------+------+--------------+------------------------+-----------------------------+----------------------+
26 |c5n.xlarge | 4 | 10.5 | EBS-Only | Up to 25 | Up to 4,750 |
27 +-------------+------+--------------+------------------------+-----------------------------+----------------------+
28 |c5n.2xlarge | 8 | 21 | EBS-Only | Up to 25 | Up to 4,750 |
29 +-------------+------+--------------+------------------------+-----------------------------+----------------------+
30 |c5n.4xlarge | 16 | 42 | EBS-Only | Up to 25 | 4,750 |
31 +-------------+------+--------------+------------------------+-----------------------------+----------------------+
32 |c5n.9xlarge | 36 | 96 | EBS-Only | 50 | 9,500 |
33 +-------------+------+--------------+------------------------+-----------------------------+----------------------+
34 |c5n.18xlarge | 72 | 192 | EBS-Only | 100 | 19,000 |
35 +-------------+------+--------------+------------------------+-----------------------------+----------------------+
36 |c5n.metal | 72 | 192 | EBS-Only | 100 | 19,000 |
37 +-------------+------+--------------+------------------------+-----------------------------+----------------------+
39 CSIT is configured by default to use `c5n.4xlarge` in `eu-central-1` AWS region
40 due to allocation stability issues with `c5n.9xlarge` in `eu-central-1` region.
43 AWS Elastic Network Adapter (ENA)
44 ---------------------------------
46 Enhanced networking uses single root I/O virtualization (SR-IOV) to provide
47 high-performance networking capabilities on supported instance types. SR-IOV is
48 a method of device virtualization that provides higher I/O performance and lower
49 CPU utilization when compared to traditional virtualized network interfaces
52 Current advertised limits are captured in [aws_limits]_.
54 .. [aws_it] `Instance types <https://aws.amazon.com/ec2/instance-types/>`_
55 .. [aws_ena] `Elastic Network Adapter <https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking-ena.html>`_
56 .. [aws_limits] `<https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/compute-optimized-instances.html>`_