Rework KHT wrapper

[markmac99]

A while back Denis suggested reworking this in native python, and I said i'd take a look at it. I have been able to get the basics working but more testing is needed especially to confirm performance.

Another alternative is to make the kht_wrapper a standalone module installable from pypi. I'll see which works best.

[markmac99]

As a side effect of this ive realised how to get this function to work on Windows. This might allow detection or at least reprocessing to be run on Windows which might be useful for someone.

[adalava]

I worked on this years ago and learned that kht isn't a problem on Windows, I could compile it by changing some compiler settings. The real problem was how Windows and Linux handle threads and process differently. The way RMS share memory objects between threads and processes isnt "allowed" on Windows and another aproach should be implemented.

I experimented using sockets with success, but I abandoned the work since I was out of free time, my interest on Windows was too low to justify and at BRAMON we had success using VMs and containers on the stations where the operator doesnt wan't switch from Windows.

I think I still have some prototype of this on a branch (outdated by years), if someone wants to take a look. Maybe this changed with recent python versions but I believe this is a OS restrition that requires an architectural refactory to work properly.

[markmac99]

Thnaks for the info. I think that windows' architecture may have changed enough that this is no longer an issue but i will test. I certainly initially had it working without any changes on the C++ side, and minimal on the python side. Will retest and see if i can confirm.

[markmac99]

Just to let folks know I'm still working on this in the background. I see that a workaround is in place to move the .so file so that its not accidentally cleaned up by the new setup process, but i think it'd be cleaner if the kht functionality was a separately installable module. This could then be built to support multiple platforms i suspect.

[g7gpr]

Can't wait for this fix to appear.

[markmac99]

Its taken backstage somewhat as i have been working on further improvements to the GMN solver, but i hope to get back to it soon.