Category: Bazel remote build execution

Companies who have provided significant contributions to the Bazel community and can help with your project. They now help others succeed in switching to Bazel. Together with Nix, Bazel is integral to delivering byte-for-byte reproducible, composable software systems integrated from hundreds of sources.

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Flare Build Systems, Inc. Codethink is an Open Source software consultancy providing development, integration, test automation and whole-of-life maintenance services for advanced software on production embedded devices and cloud infrastructure.

Codethink works with international-scale organisations exploiting Bazel and remote execution solutions to increase continuous delivery productivity and throughput. Combining decades of build domain knowledge with a deep technical expertise using Bazel, SUM Global works with your organization to create and enhance the software delivery process.

We specialize in Java, Android and Angular builds as well as conversions from other tools. We can help with Google Remote Build Execution. Whether you are considering Bazel or are underway in a complex migration, Oasis Digital can train your build engineers and app developers, assist with build migration, and enhance Bazel rules for your use cases. More broadly, we can assist with the related complexities teams experience while adopting a monorepo approach, cross-project continuous integration, dev-ops, single-version policy, and other technical-organizational challenges.

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Learn more. Flare Flare Build Systems, Inc. Codethink Codethink is an Open Source software consultancy providing development, integration, test automation and whole-of-life maintenance services for advanced software on production embedded devices and cloud infrastructure. Oasis Digital Whether you are considering Bazel or are underway in a complex migration, Oasis Digital can train your build engineers and app developers, assist with build migration, and enhance Bazel rules for your use cases.This post is a quick write-up of an experiment where I use remote execution to build my Bazel project.

For remote execution I am using the bazel build farm project. My own personal fork of build farm be found here. To launch build farm we have to launch a server process and a worker process.

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Both can be started by running server. In my implementation I follow the original example from the build farm documentation, but I have increased the max number of concurrent executions to I am also running the worker process on two different computers, which means my setup supports up to 20 concurrent executions. Once build farm is running, only minor changes in bazel. Regular Typescript builds work fine, but Angular AOT is failing since it uses an extension of the regular Typescript compiler.

Since Angular AOT compilation fails in the remote build, I have opted out of remote execution for the Angular bits by adding the following to bazel. Remote builds allow us to spread execution load across multiple computers. This will likely decrease build times since more of the build can be processed in parallel on powerful servers. Otherwise, network latency may negate the benefit of remote execution. Since the remote build creates a centralized cache, subsequent builds can read from the cache, even after doing a bazel clean locally.

The baseline build time from running a local build was 86 seconds. When running with remote executors I reduced the build time to 65 seconds. My hope is that remote execution will be even more impactful on the Angular portion of the application. The Angular portion consists of many more modules, so a parallel build should scale well.

Troubleshooting Bazel remote execution with Docker sandbox

Net Testing. Bazel Remote Execution. Torgeir "Tor" Helgevold. Build Farm To launch build farm we have to launch a server process and a worker process. Unlike the worker process, the server process is only running on one of the boxes. Building Once build farm is running, only minor changes in bazel.For some more context on Svelte and Bazel, you may want to check out my other article.

Remote build execution is an important build performance feature in Bazel. It allows you to outsource application builds to powerful computers running in the cloud.

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Given enough independent modules in your application, running against cores in parallel will cut build times by orders of magnitude. Obviously in a sufficiently large application this could make a world of difference!

In addition to remote execution, you also have remote caching. This means developer boxes can pull down modules that were previously built by remote executors. Remote caching is perhaps the most practical feature to add since it can be done cheaply without paying for a large server farm. An example of this would be a setup where you have your CI server build and cache the results.

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This works well since CI servers typically build every commit anyway. In my experiment I decided to build a very large Svelte application to measure the impact of building remotely. However it does the job as a benchmarking application. I should point out that the Svelte compiler is super fast. It seems to scale really well even with a very large number of components. The compiler can work on multiple components at once, so as a baseline I ran it against the whole project.

The components are very similar and pretty small, but still, this is very fast given the high number of components. First I ran a local build to establish a baseline.

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The first cold build was as expected very slow. It took about seconds to build the whole project. The most likely explanation is that my current Bazel Svelte rules are not optimized enough.

Mainly because the Svelte compiler instance is restarted per file instead of hitting already started instances. Bazel has a concept of workers that may address this issue, but it would mean wrapping the Svelte compiler in something that prevents restarts of the compiler per file.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again.

bazel remote build execution

If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. AnyBuild is a build remote execution system that allows seamlessly remoting developer desktop and CI build agent load into Microsoft Azure. For larger code repositories this can result in significant speedups, particularly for less capable dev machines and build VMs.

AnyBuild remotes the most expensive operations while leaving small build-test-rebuild commands just as fast. AnyBuild handles build engines like MSBuild and Gulp that do not specify inputs and outputs sufficiently for caching, and tools that bleed machine-specific paths into their outputs. Its Azure build agents do not need pre-installed tools; the tools are uploaded from the dev machine dynamically, cached for reuse, and executed under the same drive letters and paths as they would be on the dev machine or build agent, resulting in the same build outputs.

At BaelCon we demontrated a single unmodified Bazel client running a highly parallel build against over AnyBuild agents simultaneously, using the exact tool and SDK files installed on the client machine and without installing anything on the Azure agents. As of Oct 24, Debug full build with no LTCG linking. With specific settings you can remote just about anything, and wrap just about any top-level build engine process.

AnyBuild uses Windows Detours logic to hook CreateProcess calls and decides what to remote and what to run locally. We've run Gulp builds with remoting of Mocha unit tests. If the top-level build tool is a graphics rendering coordinator that can run multiple sub-processes in parallel, you can remote the rendering jobs to beefy multi-core or GPU-enabled agents of course, check your software's licensing agreements, and remember if it checks the registry it's not going to work.

Refactor a TensorFlow training set, e. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. Branch: master. Find file. Sign in Sign up.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. It is intended primarily for use by build systems, such as Bazelto distribute build and test actions through a worker pool, and also provide a central cache of build results.

This allows builds to execute faster, both by reusing results already built by other clients and by allowing many actions to be executed in parallel, in excess of the resource limits of the machine running the build.

These applications implement the Remote Execution API to server build requests from the clients above. Interested parties meet monthly via VC to discuss issues related to the APIs, and several contributors have organized occasional meetups, hack-a-thons, and summits.

bazel remote build execution

Joining the email discussion group will automatically add you to the Google Calendar invite for the monthly meeting. You will need to refer to packages from that repository in order to generate code using this API.

If you build the repository using the included BUILD files, Bazel will fetch the protobuf compiler and googleapis automatically. This allows you to depend on this repository without pulling in Go rules, for instance, if you aren't using Go rules. Other build systems will have to run protoc on the protobuf files, and link in the googleapis and well-known proto types, manually.

Get it with:. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. An API for caching and execution of actions on a remote system. Starlark Shell. Starlark Branch: master. Find file. Sign in Sign up.

Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit Fetching latest commit…. There are a number of clients and services using these APIs, they are listed below. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window.

bazel remote build execution

Mar 12, Migrating to Bazel 1. Fixes Bazel builds that succeed locally may fail when executed remotely due to restrictions and requirements that do not affect local builds. This document describes how to identify and resolve the most common issues that arise with remote execution using the Docker sandbox feature, which imposes restrictions upon the build equal to those of remote execution.

This allows you to troubleshoot your build without the need for a remote execution service. Build actions execute in toolchain containers. You can use the same toolchain containers to run your build locally and remotely via a service supporting containerized remote execution. No extraneous data crosses the container boundary. Only explicitly declared inputs and outputs enter and leave the container, and only after the associated build action successfully completes.

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Each action executes in a fresh container. A new, unique container is created for each spawned build action. Note: Builds take noticeably more time to complete when the Docker sandbox feature is enabled. This is normal. Troubleshooting natively. With this method, Bazel and its build actions run natively on your local machine. The Docker sandbox feature imposes restrictions upon the build equal to those of remote execution. However, this method will not detect local tools, states, and data leaking into your build, which will cause problems with remote execution.

Troubleshooting in a Docker container. With this method, Bazel and its build actions run inside a Docker container, which allows you to detect tools, states, and data leaking from the local machine into the build in addition to imposing restrictions equal to those of remote execution.

This method provides insight into your build even if portions of the build are failing. This method is experimental and not officially supported. Note: The flags referenced in the. Create a custom Docker container by installing tools using a Dockerfile and building the image locally.After 0. When Bazel executes commands that are a part of the build, such as compiler and linker invocations, test runs etc.

This is controlled by execution strategies. Starting with 0. This mechanism was quite powerful and widely used, but had some drawbacks:. Bazel's defaults did not account for remote execution at all, therefore we had to make sure to set the execution strategy for every mnemonic manually. Starlark rules providing a persistent worker had to ship a. Bazel had hardcoded defaults for native action mnemonics.

For example, Bazel would have used sandboxing if it's available for all actions by default but at the same time had a hardcoded default to use persistent workers for Java compilation actions. Let's configure a build to run remotely and fallback onto local strategy in case remote execution is not possible.

Ivan Anisimov. Bazel {Fast, Correct, Confusing} - Choose three

The configuration would be something like:. Bazel now auto-detects the execution strategy, if no strategy flag is provided. If none of the strategy flags was used, bazel will generate a default list of strategies remote,worker,sandboxed,local and, for every action it wants to execute, will pick up the first strategy that can execute it.

Each strategy now knows whether it can execute a given action. For any action that it wants to execute, Bazel just picks the first strategy from the given list that can execute the action. If an action cannot be executed with any of the given strategies, the build will fail. If any of the strategy flags is provided, then Bazel will use ONLY those strategies that are listed there.

In this case, Java rules will be executed using a persistent workereverything else will be executed remotely or locally if remote is not possible. Isn't it much shorter and simpler? In case this is not working for you, review the above how-to-use section for ideas. Note that the change was made behind the incompatible flagso please ping us in case of any difficulties. Follow bazelbuild.


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