labview 8.2 and Windows XP x64

[vlipje]

I would like to know if calculations in Labview 8.2 are carried out faster when run under Windows XP x64. Do I need to make changes in the code to addapt it to this Windows version?

[JeffBoettcher]

I have not used Windoes XP x64, but I have seen some previews of 64-bit Vista.  I'll share what I know and hopefully it addresses your questions.

LabVIEW 8.2 is a 32-bit application.  It will run in 32-bit mode, regardless of whether the operating system supports 32-bit or 64-bit applications.  Therefore I wouldn't expect anything to run faster on a machine running Windows XP x64 than it would on the same machine running standard Windows XP.

Additionally, 32-bit drivers will not run on a 64-bit OS.  This is the case for 64-bit Vista at least.  You may have difficulty configuring NI or other hardware on such a machine.

One benefit you do get from running under a 64-bit OS is that it can address a larger memory space, so if you have a lot of memory in your machine, more of it should be accessible by LabVIEW (but never more than 4 GB, since LabVIEW 8.2 itself is still 32-bit).  In this respect, some things might run significantly faster if it means they no longer have to swap out to disk.

Message Edited by Jeff B on 10-30-2006 07:37 AM

[Lycangeek]

Jeff summed up the key points, but let me just say that LabVIEW does not officially support XP 64-bit. We do support Vista 32-bit and Vista 64-bit, but we've not gone back to XP 64-bit to do any validation or testing. The same is true for our hardware - we'll have drivers that support Vista 64, but not XP 64.

[vlipje]

Thanks for sharing your knowledge. I hoped it would make a difference as well with smaller programs. I tried it with x64 and found out that it didn't make a diffence at all in speed.

Let's hope this will change in the future....