1. Parallel AI Model Serving using Alibaba ECS


    To serve an AI model in parallel using Alibaba Cloud Elastic Compute Service (ECS), we will set up multiple ECS instances that will each serve the model. This allows us to distribute incoming requests among the instances, thus effectively serving the model in parallel. The infrastructure will consist of several components:

    1. ECS Instances: We'll create a number of ECS instances where the AI models will run. Each instance will need to have the necessary software and models deployed to it.

    2. Load Balancer: To distribute the incoming traffic evenly across the ECS instances, we'll use a Server Load Balancer (SLB) instance. It will automatically route requests to the ECS instances.

    3. Security Group: For the ECS instances, we'll need a security group that defines the allowed inbound and outbound network traffic rules to ensure the security of our instances.

    4. ECS Disk: Each ECS instance can have an attached disk where we can store the AI model files or any other necessary data.

    Let's write a Pulumi program to define this infrastructure in Python. The program will:

    • Create an ECS instance for model serving.
    • Set up a security group for the instances.
    • Attach an ECS disk to the first instance for model storage.
    • Instantiate a Server Load Balancer to handle incoming requests and distribute them across the instances.

    Here's how to set up the infrastructure in Pulumi:

    import pulumi import pulumi_alicloud as alicloud # Create a new VPC for our infrastructure. vpc = alicloud.vpc.Network("vpc") # Create a subnet, this is required to deploy the ECS instances. subnet = alicloud.vpc.Subnet("subnet", vpc_id=vpc.id, cidr_block="") # Security group to configure the allowed network traffic for ECS instances. security_group = alicloud.ecs.SecurityGroup("securityGroup", vpc_id=vpc.id, description="Allow HTTP traffic") # Add a rule that allows inbound HTTP traffic on port 80. alicloud.ecs.SecurityGroupRule("allowHttpIngress", type="ingress", security_group_id=security_group.id, protocol="tcp", port_range="80/80", cidr_ip="") # We will need an image ID and instance type to launch the instance. The user should determine # the appropriate values based on the workload needs and available Alibaba Cloud resources. # Replace `<image-id>` and `<instance-type>` with actual values. image_id = "<image-id>" instance_type = "<instance-type>" # Create ECS instances to be used for serving the AI models. instances = [alicloud.ecs.Instance(f"ecsInstance-{i}", image_id=image_id, instance_type=instance_type, security_groups=[security_group.id], vswitch_id=subnet.id) for i in range(3)] # Example: launching 3 instances for parallel model serving. # Create an ECS disk that will be attached to one of the instances for storing AI models. disk = alicloud.ecs.Disk("ecsDisk", availability_zone=instances[0].availability_zone, size=40, category="cloud_ssd") # Attach the disk to the first ECS instance. disk_attachment = alicloud.ecs.DiskAttachment("diskAttachment", instance_id=instances[0].id, disk_id=disk.id) # Create a SLB instance to distribute incoming traffic among the ECS instances. slb = alicloud.slb.LoadBalancer("slb", vswitch_id=subnet.id) # Attach the ECS instances to the SLB. for instance in instances: alicloud.slb.Attachment(f"slbAttachment-{instance._name}", load_balancer_id=slb.id, instance_ids=[instance.id]) # Export the URL of the SLB to access the AI model serving endpoint. pulumi.export('load_balancer_url', slb.address)

    In this program, we:

    • Initialized a Virtual Private Cloud (VPC) and a subnet in Alibaba Cloud ECS using alicloud.vpc.Network and alicloud.vpc.Subnet resources.
    • Defined a new security group for our ECS instances to allow HTTP traffic using alicloud.ecs.SecurityGroup and alicloud.ecs.SecurityGroupRule resources.
    • Created three ECS instances where our AI model will be served in parallel (alicloud.ecs.Instance).
    • Provisioned an SSD cloud disk and attached it to one of the ECS instances (alicloud.ecs.Disk and alicloud.ecs.DiskAttachment).
    • Set up a Server Load Balancer instance (alicloud.slb.LoadBalancer) and attached ECS instances to it (alicloud.slb.Attachment).
    • Lastly, we exported the URL of the load balancer to access the AI model serving endpoint.

    Make sure to replace the placeholders <image-id> and <instance-type> with the actual values that suit your AI model's requirements. You'll need to choose an image that has the necessary software and dependencies pre-installed, or alternatively, set up the software after the instances are running.

    This Pulumi program will set up a basic infrastructure for parallel AI model serving on Alibaba Cloud. Once the infrastructure is up and running, you would then need to deploy your model serving application to the instances.