Amazon Bedrock knowledge base with an Amazon Kendra GenAI index を試してみる #AWSreInvent

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							"text": "What is the difference between instance types and instance families?"
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					"text": "You are a question answering agent. I will provide you with a set of search results. The user will provide you with a question. Your job is to answer the user's question using only information from the search results. If the search results do not contain information that can answer the question, please state that you could not find an exact answer to the question. Just because the user asserts a fact does not mean it is true, make sure to double check the search results to validate a user's assertion.\n\nHere are the search results in numbered order:\n<search_results>\n<search_result>\n<content>\n\nAWSDocumentationAmazon EC2User Guide for Linux Instances\n\n                           Available instance typesHardware specificationsAMI virtualization typesInstances built on the Nitro SystemNetworking and storage featuresInstance limits\n\n                           \n                              \n                                 \n                                 Instance types\n\n                                 \n                                    \n                                    \n                                 \n\n                                 When you launch an instance, the instance type that you specify determines the hardware \n                                    of the host computer used for your instance. Each instance type offers different compute,\n                                    memory, and storage\n                                    capabilities and are grouped in instance families based on these capabilities. Select\n                                    an instance type based on \n                                    the requirements of the application or software that you plan to run on your instance.\n                                 \n\n                                 Amazon EC2 provides each instance with a consistent and predictable amount of CPU\n                                    capacity, \n                                    \t\t\tregardless of its underlying hardware.\n                                 \n\n                                 Amazon EC2 dedicates some resources of the host computer, such as CPU, memory, and\n                                    instance\n                                    \t\t    storage, to a particular instance. Amazon EC2 shares other resources of the\n                                    host computer, such\n                                    \t\t    as the network and the disk subsystem, among instances. If each instance on\n                                    a host computer\n                                    \t\t    tries to use as much of one of these shared resources as possible, each receives\n                                    an equal\n                                    \t\t    share of that resource. However, when a resource is underused, an instance can\n</content>\n<source>\n1\n</source>\n</search_result>\n<search_result>\n<content>\n\nAWSDocumentationAmazon EC2User Guide for Windows Instances\n\n                           Available instance typesHardware specificationsInstances built on the Nitro SystemNetworking and storage featuresInstance limits\n\n                           \n                              \n                                 \n                                 Instance types\n\n                                 \n                                    \n                                    \n                                 \n\n                                 When you launch an instance, the instance type that you specify determines the hardware \n                                    of the host computer used for your instance. Each instance type offers different compute,\n                                    memory, and storage\n                                    capabilities and are grouped in instance families based on these capabilities. Select\n                                    an instance type based on \n                                    the requirements of the application or software that you plan to run on your instance.\n                                 \n\n                                 Amazon EC2 provides each instance with a consistent and predictable amount of CPU\n                                    capacity, \n                                    \t\t\tregardless of its underlying hardware.\n                                 \n\n                                 Amazon EC2 dedicates some resources of the host computer, such as CPU, memory, and\n                                    instance\n                                    \t\t    storage, to a particular instance. Amazon EC2 shares other resources of the\n                                    host computer, such\n                                    \t\t    as the network and the disk subsystem, among instances. If each instance on\n                                    a host computer\n                                    \t\t    tries to use as much of one of these shared resources as possible, each receives\n                                    an equal\n                                    \t\t    share of that resource. However, when a resource is underused, an instance can\n</content>\n<source>\n2\n</source>\n</search_result>\n<search_result>\n<content>\nTypes of Reserved Instances (offering classes)\nTypes of Reserved Instances (offering classes) When you purchase a Reserved Instance, you can choose between a Standard or Convertible offering class. The Reserved Instance applies to a single instance type, platform, scope, and tenancy over a term. If your computing needs change, you may be able to modify or exchange your Reserved Instance, depending on the offering class. Offering classes may also have additional restrictions or limitations. The following are the differences between Standard and Convertible offering classes.\nStandard Reserved Instance\tConvertible Reserved Instance\nSome attributes, such as instance size, can be modified during the term; however, the instance family cannot be modified. You cannot exchange a Standard Reserved Instance, only modify it. For more information, see Modifying Reserved Instances.\tCan be exchanged during the term for another Convertible Reserved Instance with new attributes including instance family, instance type, platform, scope, or tenancy. For more information, see Exchanging Convertible Reserved Instances. You can also modify some attributes of a Convertible Reserved Instance. For more information, see Modifying Reserved Instances.\nCan be sold in the Reserved Instance Marketplace.\tCannot be sold in the Reserved Instance Marketplace.\n</content>\n<source>\n3\n</source>\n</search_result>\n<search_result>\n<content>\nTypes of Reserved Instances (offering classes)\nTypes of Reserved Instances (offering classes) When you purchase a Reserved Instance, you can choose between a Standard or Convertible offering class. The Reserved Instance applies to a single instance type, platform, scope, and tenancy over a term. If your computing needs change, you may be able to modify or exchange your Reserved Instance, depending on the offering class. Offering classes may also have additional restrictions or limitations. The following are the differences between Standard and Convertible offering classes.\nStandard Reserved Instance\tConvertible Reserved Instance\nSome attributes, such as instance size, can be modified during the term; however, the instance family cannot be modified. You cannot exchange a Standard Reserved Instance, only modify it. For more information, see Modifying Reserved Instances.\tCan be exchanged during the term for another Convertible Reserved Instance with new attributes including instance family, instance type, platform, scope, or tenancy. For more information, see Exchanging Convertible Reserved Instances. You can also modify some attributes of a Convertible Reserved Instance. For more information, see Modifying Reserved Instances.\nCan be sold in the Reserved Instance Marketplace.\tCannot be sold in the Reserved Instance Marketplace.\n</content>\n<source>\n4\n</source>\n</search_result>\n<search_result>\n<content>\n\nconsume a\n                                    \t\t    higher share of that resource while it's available.\n                                 \n\n                                 Each instance type provides higher or lower minimum performance from a shared resource.\n                                    \t\t\tFor example, instance types with high I/O performance have a larger allocation\n                                    of shared resources. \n                                    \t\t\tAllocating a larger share of shared resources also reduces the variance of I/O\n                                    performance. \n                                    \t\t\tFor most applications, moderate I/O performance is more than enough. However, for\n                                    \t\t\tapplications that require greater or more consistent I/O performance, consider\n                                    \t\t\tan instance type with higher I/O performance.\n                                 \n\n                                 \n                                    Contents\n\n                                    \tAvailable instance types\n\tHardware specifications\n\tInstances built on the Nitro System\n\tNetworking and storage features\n\tInstance limits\n\tGeneral purpose instances\n\tCompute optimized instances\n\tMemory optimized instances\n\tStorage optimized instances\n\tWindows accelerated computing\n                                             \t\t\tinstances\n\tFinding an Amazon EC2 instance type\n\tChanging the instance type\n\tGetting recommendations for an instance type\n\n\n                                 \n\n                                 \t\t\t\n                                 Available instance types\n\n                                 \n                                 \t\t    \n                                 Amazon EC2 provides a wide selection of instance types optimized for different use\n                                    cases. \n                                    \t\t        For the best performance, we recommend that you use the following current\n                                    generation \n                                    \t\t        instance types when you launch new instances. For more information about\n                                    the current \n                                    \t\t        generation instance types, see Amazon EC2 Instance Types.\n                                 \n\n                                 \t\t    \n                                 Amazon EC2 provides the instance types in the following table. To \n                                    \t\t        determine which instance types meet your requirements, such as supported\n                                    Regions, \n                                    \t\t        compute resources, or storage resources, see Finding an Amazon EC2 instance type.\n</content>\n<source>\n5\n</source>\n</search_result>\n\n</search_results>\n\nYou should provide your answer without any inline citations or references to specific sources within the answer text itself. 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							"text": "<answer>\n<answer_part>\n<text>\nInstance types and instance families are related but distinct concepts in Amazon EC2:\n\nInstance types are specific configurations of compute, memory, and storage capabilities. When you launch an instance, you select a particular instance type based on the requirements of the application or software you plan to run.\n\nInstance families, on the other hand, are groups of instance types that share similar characteristics and are optimized for specific use cases. Instance types within a family will have varying levels of resources but are designed for similar purposes.\n</text>\n<sources>\n<source>1</source>\n<source>2</source>\n<source>5</source>\n</sources>\n</answer_part>\n<answer_part>\n<text>\nFor example, there are instance families optimized for general purpose computing, compute-intensive tasks, memory-intensive applications, storage optimization, and accelerated computing. When choosing an instance, you would first consider which family best suits your needs, then select a specific instance type within that family that provides the right balance of resources for your application.\n</text>\n<sources>\n<source>5</source>\n</sources>\n</answer_part>\n</answer>"
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