Full EFA attachment for non-public IPs #2271
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r4victor
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Feb 7, 2025
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| if instance_type == "p5.48xlarge": | ||
| # EFA configuration for P5 instances: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/efa-acc-inst-types.html#efa-for-p5 | ||
| p5d_interfaces = [ | ||
| { | ||
| "NetworkCardIndex": i, | ||
| "DeviceIndex": 1, | ||
| "InterfaceType": "efa" if i % 4 == 0 else "efa-only", | ||
| } | ||
| for i in range(1, 32) | ||
| ] | ||
| for interface in p5d_interfaces: | ||
| struct["NetworkInterfaces"].append( | ||
| { | ||
| "AssociatePublicIpAddress": allocate_public_ip, | ||
| "NetworkCardIndex": interface["NetworkCardIndex"], | ||
| "DeviceIndex": interface["DeviceIndex"], | ||
| "SubnetId": subnet_id, | ||
| "Groups": [security_group_id], | ||
| "InterfaceType": interface["InterfaceType"], | ||
| } | ||
| ) | ||
| else: | ||
| for i in range(1, max_efa_interfaces): | ||
| struct["NetworkInterfaces"].append( | ||
| { | ||
| "AssociatePublicIpAddress": allocate_public_ip, | ||
| "NetworkCardIndex": i, | ||
| "DeviceIndex": 1, | ||
| "SubnetId": subnet_id, | ||
| "Groups": [security_group_id], | ||
| "InterfaceType": "efa-only", # Set specifically to efa-only to keep the interfaces exclusively for GPU-to-GPU communications and not mix with IP traffic | ||
| } |
There was a problem hiding this comment.
It seems "InterfaceType" is the only difference between "p5.48xlarge" and other instance types? Then the code can be simplified significantly:
for i in range(1, max_efa_interfaces):
# Set efa-only to keep the interfaces exclusively for GPU-to-GPU communications and not mix with IP traffic
interface_type = "efa-only"
if instance_type == "p5.48xlarge":
# EFA configuration for P5 instances:
# https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/efa-acc-inst-types.html#efa-for-p5
interface_type = "efa" if i % 4 == 0 else "efa-only"
struct["NetworkInterfaces"].append(
{
"AssociatePublicIpAddress": allocate_public_ip,
"NetworkCardIndex": i,
"DeviceIndex": 1,
"SubnetId": subnet_id,
"Groups": [security_group_id],
"InterfaceType": interface_type,
}
)There was a problem hiding this comment.
Sorry, pushed the choppy version without refactoring. Fixed.
|
@solovyevt, thanks for the PR, looks good. I'm merging it. I also pushed a commit to update the docs. |
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Closes #2270