Azure Batch using Azure CLI and .Net (rest api) | AZ-204 | AZ-203

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AZ-203.2/ AZ-204.2Module 02: Azure Batch using azure portal, Azure CLI and .Net (rest api).

In this module, you will cover:
Azure Batch.
Running a batch job by using Azure CLI and Azure portal.
Running Batch jobs by using code.
Managing batch jobs by using Batch Service API.

In this lesson, you will cover:
Azure Batch.
How Azure Batch works.
Azure Batch service resources.
Quotas and limits.
Use Azure Batch to run large-scale parallel and high-performance computing (HPC) batch jobs efficiently in Azure. Azure Batch creates and manages a pool of compute nodes (virtual machines), installs the applications you want to run, and schedules jobs to run on the nodes. There is no cluster or job scheduler software to install, manage, or scale. Instead, you use Batch APIs and tools, command-line scripts, or the Azure portal to configure, manage, and monitor your jobs.

Pool nodes are the VMs that execute your tasks. Specify properties such as the number and size of the nodes, a Windows or Linux VM image, and an application to install when the nodes join the pool. Manage the cost and size of the pool by using low-priority VMs or automatically scaling the number of nodes as the workload changes. When you add tasks to a job, the Batch service automatically schedules the tasks for execution on the compute nodes in the pool. Each task uses the application that you uploaded to process the input files.
Before each task executes, it can download the input data that it is to process to the assigned compute node. If the application isn't already installed on the pool nodes, it can be downloaded here instead. When the downloads from Azure Storage complete, the task executes on the assigned node.
As the tasks run, query Batch to monitor the progress of the job and its tasks. Your client application or service communicates with the Batch service over HTTPS. Because you might be monitoring thousands of tasks running on thousands of compute nodes, be sure to query the Batch service efficiently.
As the tasks complete, they can upload their result data to Azure Storage. You can also retrieve files directly from the file system on a compute node.
When your monitoring detects that the tasks in your job have completed, your client application or service can download the output data for further processing.

Upload input files and the applications to process those files to your Azure Storage account.
Create a Batch pool of compute nodes in your Batch account, a job to run the workload on the pool, and tasks in the job.
Download input files and the applications to Batch.
Monitor task execution.
Upload task output.
Download output files.
Account
An Azure Batch account is a uniquely identified entity within the Batch service. All processing is associated with a Batch account.
You can create an Azure Batch account by using the Azure portal or programmatically, such as with the Batch Management .NET library. When creating the account, you can associate an Azure storage account for storing job-related input and output data or applications.
Azure Storage account
Compute node
A compute node is an Azure virtual machine (VM) or cloud service VM that is dedicated to processing a portion of your application's workload. The size of a node determines the number of CPU cores, memory capacity, and local file system size that is allocated to the node. You can create pools of Windows or Linux nodes by using Azure Cloud Services, images from the Azure Virtual Machines Marketplace, or custom images that you prepare. Examine the following Pool section for more information on these options.
Pool
A pool is a collection of nodes that your application runs on. The pool can be created manually by you, or automatically by the Batch service when you specify the work to be done. You can create and manage a pool that meets the resource requirements of your application. A pool can be used only by the Batch account in which it was created. A Batch account can have more than one pool.


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Examples:
https://github.com/Azure-Samples/batc...
https://docs.microsoft.com/en-us/azur...
https://docs.microsoft.com/en-us/azur...


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