- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- HP-UX 11i Itanium and endian
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Forums
Discussions
Discussions
Discussions
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
05-30-2003 03:27 AM
05-30-2003 03:27 AM
If my thoughts are correct, then we have some big BE<->LE issues to resolve, but I thought I'd just verify my facts first.
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
05-30-2003 03:30 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
05-30-2003 03:39 AM
05-30-2003 03:39 AM
Re: HP-UX 11i Itanium and endian
excuse my intromission but i'm interested in the argument.
Big Endian: Most Significant Bytes at right
Little Endian: Most Significant Bytes at left
or vice-versa, it really does not matter.
But, at assembler level, a processor can only be one of the two, MSB at right or left.
I can understand that aftewards O.S. masquerade this, because you use structures in C or whatever language, and the sintax id O.S. and release dependent.
But, for example, if he is writing a driver, he nedds to know exaclty what is the situation.
Massimo
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
05-30-2003 03:53 AM
05-30-2003 03:53 AM
Re: HP-UX 11i Itanium and endian
nope, the itanium can be BE or LE, and yes at assemble level you care, but the boot loader can change this. The Itanium is started be EFI, and EFI is LE, but you can change the endianess of this CPU, so you must really take care when writing drivers of this endianess of your OS: Linux IA64 is LE and HP-UX IA64 is BE.
Cheers.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
05-30-2003 04:00 AM
05-30-2003 04:00 AM
Re: HP-UX 11i Itanium and endian
Massimo
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
05-30-2003 04:28 AM
05-30-2003 04:28 AM
Re: HP-UX 11i Itanium and endian
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
05-30-2003 10:01 AM
05-30-2003 10:01 AM
Re: HP-UX 11i Itanium and endian
Note that you can't compile and link PA-RISC code on Itanium, so programs that involve a link step for customization can't be used on IPF until they are ported to native IPF code.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
06-02-2003 10:32 AM
06-02-2003 10:32 AM
Re: HP-UX 11i Itanium and endian
> Note that you can't compile
> and link PA-RISC code on
> Itanium, so programs that
> involve a link step for
> customization can't be used
> on IPF until they are ported
> to native IPF code.
D'oh! This is exactly what
I didn't want to hear. I
guess I didn't search the
whitepapers closely enough.
Where can I find info on
issues like this? In the
STK docs? Searching for
"Aries" turns up very
little info.
Is there any IPF system
"test drive" program? Before
I committed to buying an IPF
system it would have been
nice to test out my legacy
PA-RISC apps. By now it's
a moot point for me; I guess
the first task for my ZX6000
will be porting my legacy
codes that use the linker
at run time.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
06-20-2003 09:19 AM
06-20-2003 09:19 AM
Re: HP-UX 11i Itanium and endian
The test drive program can be found at
http://www.testdrive.hp.com. IPF machines are available,
and accounts are free. I tested my engineering analysis
application (heavily CPU-bound) on their RX2600, and the
performance hit for running under the ARIES PA-RISC
compatibility mode vs. running IPF native was about
5x for my application. The results generated under
ARIES were byte-for-byte identical with the results
generated on PA-RISC (somewhat unexpected, seeing
that the PA-RISC machine was running 10.20 while the
IPF machine was on 11.22). The IPF native results were
a little different, but the differences were small.