11_x86 build - build failures due to 'no space on device'

[Ryan Schmidt]

On Feb 11, 2021, at 19:19, Ryan Schmidt wrote:

> On Feb 11, 2021, at 18:45, Ryan Schmidt wrote:
> 
>> On Feb 11, 2021, at 04:21, Christopher Jones wrote:
>> 
>>> I am seeing some large builds fail due to drive space issues
>>> 
>>> https://build.macports.org/builders/ports-11_x86_64-builder/builds/21466/steps/install-port/logs/stdio
>>> error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/install_name_tool: can't write output file: bazel-out/host/bin/tensorflow/python/_pywrap_tfcompile.so.XXXXXX (No space left on device)
>>> Could the space on the drive for this build be reviewed and purged / increased a bit ?
>> 
>> Sigh... not again...
>> 
>> Josh reported the same thing one month ago on the infrastructure list. At the time, I discovered that Xcode had created two separate copies of a CoreSimulator directory, each containing cache files for simulating iOS, iPadOS, watchOS and tvOS environments, none of which we need or asked for, and each copy occupied 9.2GB. At the time, I deleted one of them, leaving us with 25GB free space. I have now deleted the second one, leaving us with 11GB free space and additional space will be freed once the currently running build of py37-tensorflow finishes. But it seems likely that Xcode will silently recreate this enormous cache at some point in the future.
> 
> Looks like the copy of the CoreSimulator directory that I had deleted on January 18 got recreated on January 25. I have deleted it again. We are now at 20GB free.

Apple helpfully recreated the CoreSimulator directory again today. I'm not going to delete it again unless we have a plan for how to prevent it from being recreated, to avoid unnecessary wear and tear on the SSD, since we've already destroyed three SSDs in these servers. 16 GB free. I have another change planned to mpbb to free up some more space.