Do we need to install cuda 9 to run compiled under cuda 9?
It's a question, I do not know. I only notice that you reproduce what Klaust says and that I do not have this version.
Otherwise you do not answer my other question: How many KH earned compared to the previous version

I'm sorry, but each last version does not necessarily bring additional hashrate therefore, so I want to update but if it does not approve of me, I see no reason to update.
You have the 8.17 version, I just updated to 8.19 and don't remember how much was old hash rate.
WTM says 500 kh/s for neoscrypt on 1060
My previous remarks about CUDA9 in KTccminer used instead of CUDA8 was quite justified, and I learned it at my depend :
I had theses errors while minning GBX
/home/m1/KTccminer/ccminer: error while loading shared libraries: libcudart.so.9.1: can not open shared object file
/home/m1/KTccminer/ccminer: error while loading shared libraries: libcudart.so.9.1: can not open shared object fileI note that you have not added GBX or XVG in 0miner and or 1bash. I made the updates that you proposed and I found that these coins command lines had been erased from my file 0miner.
By the way, I tried your modifications to add nicehash to my coins selection in WTM switches and they do not seem to work on my miner.
When wtm_switch determines that nice-nescrypt is in the first place, in the terminal, the 3main script shows me an empty space instead of the command that should launch the miner neosscrypt KTccminer (I only added this nicehash nescrypt switch)
To summarize :
1 KTccminer 8.17 on cuda 8 mine GBX very well
Thank you in advance for indicating me the commands to use to install CUDA9 on my system an make KTccminer 8-19 fully operationnal
2 My 0miner file has been updated by deleting lines instead of ONLY adding them necessary as for the 1bash file
3 NICE-NEOSCRYPT does not seem to work in WTM selection
I am trying to re-check all the commands in the file 0miner and put it in shape for more readability.If this file is more than 1400 lines, and so it will take me a lot of time...
EDIT :
For point 3 => I advise to verify some if loops in entire 0miner script file. I 've found some fi missing. By puting all lines in shape, i've found this missing "fi" in some "if" conditionnals loops. I don't note where, so you have to verify at least thos for adding nicehash in WTM.
NB : Be carefull because nicehash give us a new BTC address wallet, so IT'S NOT YOUR REAL BTC address wallet that you have to put in 1bash for ZPOOL autoconvert (for example).
For point 2 : You can follow my links here :
https://bt.irlbtc.com/view/1854250.msg27669739#msg27669739For point 1, i'm waiting the future nvOC version of ours super coders papampi, leenoox, stubo, and all others that propose some improvments and débugging.