Peformance degradation between 2023.04 and current main

[uramirez8707]

Describe the bug

There is a small performance degradation between 2023.04 and the 2024.01-alpha2.
For example, for ESM4.2, Main loop clocks are almost the same between 2024.01-alpha2 and 2023.04. The Initialization clock has increased a bit from 96secs to 125secs.

This is related to #1388. nearest_index is a bit slower than the indp (this was used in horiz_interp in 2023.04). Particularly the part of the code that checks that the array passed in is monotonically increasing/decreasing is not very efficient

To Reproduce
Compare initialization times between 2023.04 and 2024.01-alpha2.

Expected behavior
Performance of FMS should be as best as possible.

System Environment
Describe the system environment, include:
This happens in any system, but I saw this in the amd box with the data_override unit tests and in GAEA.

Additional context
N/A

[uramirez8707]

closed in #1445

[thomas-robinson]

@uramirez8707 Do we need to reopen the original issue?

[uramirez8707]

No this is fixed.