We now have a pre-release distribution of NI-VISA with 64-bit Linux support. If you are interested in acquiring this software to test it out, please private message me (Alisha_P) for more information.
Hi Alisha/ NI team
I got the 64 bits NI-VISA for Linux (RHEL) beta release from NI and I would like to clarify couple of things.
To make myself clear I will start with a bit of history and what I'm trying to accomplish.
The ultimate goal is to run NI-VISA on a RHEL 6.5 or higher using PyVISA, a wrapper from Python.
Before trying the 64 bits beta release, I have experimented with NI-VISA-5.4.1.iso on a RHEL5 using a Python2.7.8 32 bit version to be compatible with NI-VISA 5.4.1.iso (which is a 32 bit.).
Here are the experiments:
Experiment 1 (RHEL 5, Python(32bits), PyVISA, NI-VISA 5.4.2.iso(32bits))
Experiment2: (RHEL6.5, Python(64bits) PyVISA, NI-VISA-14.5.0.iso(64bits), NI-VISA-Runtime-14.5.0.iso(64bits))
The questions are:
I understand that this image is a beta release and it might have some
issues but I would like to know if it should work up to the point where
VISA should be able to discover the instruments on the GPIB bus.
I would also be interested in testing the 64bit NI-VISA library. Is it available?
I have a RHEL 6 64bit system, and I'm interested in controlling a TDS 3045B scope.
To answer your questions:
1) You do not need to install both .iso images. For development, you would just install the first one. (the run-time provides a smaller footprint for running applications)
2) 488.2 2.9.1 does not contain 64-bit application support. However, there is a newer version available that has added this support: 488.2 3.2.0
3) 488.2 is not included in the NI-VISA software. You will need to install the driver separately.
4) My recommendation would definitely be to download 488.2 3.2.0, install that, and see if that allows you to communicate with your GPIB instruments.
NI-VISA 14.0 for Linux does not have 64-bit user mode support.
Quote from readme:
Currently, only 32-bit applications are supported on the x86-64 architecture.
You can run NI-VISA 14.0 for Linux on a 64-bit machine, but it will not support 64-bit applications like LabVIEW.
Thank you for pointig out to the latest 488.2 for VISA 64.
Followed your suggestion but still cannot see the instruments being discovered on the GPIB.
Here is a capture file that might explains what is going on the bus.
Here are the logs after installing NI-VISA64 and NI4882-3.2.0f0.
Also, I attached two screenshots, one for VISA32 and one for VISA64, just to see what the problem is.
Both are having instruments connect via GPIB-USB-B and GPIB-USB-HS cables; VISA32 can see the instrument but not VISA64.
Is there anything missing?
PS:Wondering if anyone from NI is reading this forum or not?!
The logs seem to indicate that the installations were successful.
I'm a little confused about the difference between the two pictures that you posted? Are these from two separate machines or two separate installations on the same machine?
If two machines, what kernel versions are each machine running?
If they are from the same installation, what changes were made between the first picture of VISAIC and the second?
The pictures are from two different installations on two different machines.
1. (machine 1) - NI-VISA 32 bits:
# cat /proc/version
Linux version 2.6.18-194.el5 (firstname.lastname@example.org)
(gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Tue Mar 16 21:52:39 EDT 2010
2. (machine 2) - NI-VISA 64 bits:
Linux version 2.6.32-431.el6.x86_64 (email@example.com)
(gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) ) #1 SMP Sun Nov 10 22:19:54 EST 2013
I have tried installing NI-VISA 64 on machine 1 and ended up with the same result as for the
instalation on machine 2; no instruments were discoverd on the GPIB bus.
I would like to know if you succesfully installed VISA64 on one of your RHEL machine(or some other Linux) and
were able to discover some GPIB instruments.