docs/report/introduction/methodology_aws/aws_instances.rst

   1 Instances
   2 ---------
   3
   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]_.
   8
   9 Features:
  10
  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.
  20
  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 +-------------+------+--------------+------------------------+-----------------------------+----------------------+
  38
  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.
  41
  42
  43 AWS Elastic Network Adapter (ENA)
  44 ---------------------------------
  45
  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
  50 [aws_ena]_.
  51
  52 Current advertised limits are captured in [aws_limits]_.
  53
  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>`_