EFA

Question 1

What is something you can do with EFA that you cannot with Infiniband

Answer 1

EFA traffic is encrypted by the Nitro card. This capability is not something you get out of the box for Infiniband

Question 2

What is it

Answer 2

a network device that has OS-bypass capabilities for low-latency network communications with other instances on the same subnet. EFA is exposed by using Libfabric, and can be used by applications using the Messaging Passing Interface (MPI).

Question 3

What is special about the EFA security group

Answer 3

An EFA requires a security group that allows all inbound and outbound traffic to and from the security group itself.

Question 4

How do I attach an EFA to EC2

Answer 4

However, unlike elastic network interfaces, EFAs cannot be attached to or detached from an instance in a running state.

Question 5

What are the 4 requirements to use EFA

Answer 5

Choose one of the supported instance types.

Use an AMI for one of the supported operating systems.

Install the EFA software components. For more information, see Step 3: Install the EFA software and Step 5: (Optional) Install Intel MPI.

Use a security group that allows all inbound and outbound traffic to and from the security group itself

Question 6

How can I monitor performance of EFA

Answer 6

VPC Flow logs and CloudWatch

Question 7

How do my applications interact with EFA

Answer 7

Through MPI and libfabric