Lotus notes 8.5 32 bit database, Linux 64 bit OS, anyone has installed NMDA 1.6 ?

I've chcked the latest compatibility guide, NMDA 1.6 release notes and NMDA 1.6 installation guide. Here is my confusing on the document:

- in compatibility guide:

      NMDA 1.6 32 bit support Notes 8.5, 9; and NMDA 1.6 64 bit support Notes 9

      for single database host, 32 bit database requires to install 32 bit NMDA and 64 bit db requires to install 64 bit NMDA

- in NMDA release note:

      mixed of 32 bit and 64 bit databases, NMDA 1.6 support Lotus Notes 9 64 bit db and earlier version of Notes 32 bit db

Anyone can shed light on which NMDA binary (32 or 64) you have installed ?

thanks!