LabVIEW
Installing RTI DDS on LabVIEW RTOS
I see on their site this:
To purchase the RTI DDS Toolkit for LabVIEW Real-Time on ARM targets running NI Linux Real-Time (including the cRIO-906x and myRIO), go to LabVIEW Tools Network or contact RTI.
This would indicate to me that they have only a realtime distribution for the ARM based realtime targets from NI. For a realtime target based on the Pharlap ETS system, they would need to compile/build a Pharlap ETS compatible support library first. And that is not trivial.
From the installation, they seems to support other architectures than ARM.
Though, looking at their screenshot from the Getting Started manual, they are installing it to a cRIO-9068. Does that mean it cannot be installed on a regular laptop PC, even though the machine passes the evaluation program from the NI LabVIEW RTOS USB software?
They are two totally different issues! One is the compatibility of the NI RT ETS system to a particular set of hardwares. NI has currently 4 different RT software platforms.
1) For their older x86 based RT systems such as compactFP, first Generation cRIO and some smart cameras, they use the Pharlap ETS system.
2) Because the embedded x86 CPUs were not powerful enough or to expensive they looked for an alternative and came out with their second generation PowerPC based compactFP and cRIO systems. However Pharlap ETS only supports x86 CPUs so they had to look for a different solution and came to the vxWorks OS which supports the PowerPC architecture.
3) But the PowerPC architecture has lost some of its traction after Apple decided to jump on the Intel x86 bandwagon, so NI was looking for yet another platform. The Xilinx Zinq platform was an ideal hardware choice for their low end RT system as they were already using the Xilinx architecture in their cRIO systems. For the higher end systems the x86_64 hardware was now not only technically feasable (you don't need a liquid helium cooling system anymore to keep an x86 processor on a decent temperature 
). And the logical OS choice for both hardware platforms was a Linux RT based system.
The compatibilty check you mention simply checks that the NI RT Pharlap ETS OS can be installed on your target hardware (your labtop).
But since the RTI Toolkit is based on compiled shared libraries at its core, these shared libraries need to be recompiled for each of these platforms in their respective C toolchain. That's completely independent of the fact if you can install the NI RT Pharlap ETS system on a specific PC hardware system (well not entirely of course, since if the Pharlap ETS system is not compatible with a particular PC system, even a toolkit which supports NI RT Pharlap explicitedly won't be possible to be used on that system).
RTI would have to create a support library for the NI RT Pharlap ETS based system, in order for you to install it on your RT labtop. And an NI RT Linux for x64 support library to support the cRIO-903x and cRIO-908x platforms. What they currently seem to have is an NI RT Linux for ARM support library. And to be really complete they would also have to create an NI RT vxWorks support library (which is the most painful to create unless you shelf out a lot of money for the Wind River vxWorks Workbench software).
