Java-tron - Release linux/arm64 builds

[andreclaro]

Description

Release linux/arm64 builds for java-tron.

Related Issues

• Update protoc-gen-grpc-java dependency to > v1.26.0 to be able to build in ARM64 #4248
• Building on ARM64 fails #4525

Why this feature is important

• Take advantages of running the nodes on top Arm CPU architecture machines, such as, AWS Graviton2/3. The main benefits are costs reduction and performance increase. For further details consult: https://aws.amazon.com/ec2/graviton and https://about.gitlab.com/blog/2021/08/05/achieving-23-cost-savings-and-36-performance-gain-using-gitlab-and-gitlab-runner-on-arm-neoverse-based-aws-graviton2-processor
  " Our latest cost analysis and performance benchmarks show that customers can realize cost savings of up to 23% and performance gains of up to 36% by deploying the GitLab application and GitLab Runner on the Arm-based Graviton2 when compared to the x86 based M5/C5 EC2 instances."

• Enable developers to run java-tron on their MacBook Pro M1/M2 laptops.

[halibobo1205]

Due ExchangeProcessor use Math.pow to calculate instead of StrictMath.pow, Math.pow for jdk1.8_x86 being specially implemented.

In java8, the default behavior of Math is using any available FPU like 8087. The results of float operations might be platform-dependent.
In later versions, the default behavior changes and will use IEEE-float(SSE2 instructions). So you can't update JDK/JRE without a proposal-fork.

In detail, java-tron's double arithmetic will use x87 instructions. And is difficult to port to other languages or platform, since all modern languages use ieee-compatible and stable arithmetic for float numbers.

[ethan1844]

Thanks for your contribution to java-tron, this issue will be closed as no update for a long time.

Please feel free to re-open it if you still see the issue, thanks.

[microcai]

so, tron use java, but can only run on x86_64 ?

[halibobo1205]

so, tron use java, but can only run on x86_64 ?

For tron, jvm only support Oracle JDK 1.8 x86_64