Can simple trainer actually be simple?

[min-hieu-netropy]

Why is this example so needlessly complicated? -- pose optimizer, multi-gpu, bilateral grid, streaming output, etc. This is completely different from the 2D example where a concise, clear, and complete code is given.

[felixniemeyer]

maybe we can have two examples:
minimal-trainer and comprehensive-trainer

Some people like me primarily want to apply gsplat to datasets and are happy about all features being implemented :)