Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
A Dumb question re: 64bit
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Gentoo on Sparc
View previous topic :: View next topic  
Author Message
Corp.Nobbs
Tux's lil' helper
Tux's lil' helper


Joined: 02 Oct 2003
Posts: 112
Location: Reading, UK

PostPosted: Thu Oct 16, 2003 9:02 am    Post subject: A Dumb question re: 64bit Reply with quote

I been reading quite a few links about trying to get 64bit userland running.. Seen xming's work getting gcc64 running.
My question is, apart from the increased amount of memory available to apps, what other advantages are there to run 64bit userland rather than 32bit? This it faster? After all, doesn't Solaris use 32bit userland too.

This also makes me think about the benefits of looking at an Athlon64 compared to a highend P4 as a future upgrade to my T-bird box (sorry for the non-sparc bit).

PS. I have an Ultra30 happly running standard Gentoo, but it's so-slow..
Back to top
View user's profile Send private message
ciaranm
Retired Dev
Retired Dev


Joined: 19 Jul 2003
Posts: 1719
Location: In Hiding

PostPosted: Thu Oct 16, 2003 12:17 pm    Post subject: Reply with quote

Some things are faster in 64bit userland. Crypto comes to mind -- you'll get four times the speed with IDEA and Blowfish calculations, for example. Other things are slower.

I'm pretty sure Slowaris uses 64bit userland...

On x86 it'll be different, as the CPU design isn't as good. The reason the amd64 CPUs are so much faster than conventional x86 is the extra registers...

And if your box is too slow, drop into OBP and up the clockspeed a bit :)
Back to top
View user's profile Send private message
Corp.Nobbs
Tux's lil' helper
Tux's lil' helper


Joined: 02 Oct 2003
Posts: 112
Location: Reading, UK

PostPosted: Thu Oct 16, 2003 12:35 pm    Post subject: Reply with quote

ciaranm wrote:
Some things are faster in 64bit userland. Crypto comes to mind -- you'll get four times the speed with IDEA and Blowfish calculations, for example. Other things are slower.

I'm pretty sure Slowaris uses 64bit userland...

On x86 it'll be different, as the CPU design isn't as good. The reason the amd64 CPUs are so much faster than conventional x86 is the extra registers...

And if your box is too slow, drop into OBP and up the clockspeed a bit :)


Thanks for the low-down.. I might give changing clock speed a whirl :wink:
Back to top
View user's profile Send private message
NewBlackDak
Guru
Guru


Joined: 02 Nov 2003
Posts: 512
Location: Utah County, UT

PostPosted: Mon Nov 03, 2003 3:41 am    Post subject: Reply with quote

ciaranm wrote:
…drop into OBP and up the clockspeed a bit :)


How do you do this?
My PCs are OCed, my Macs are OCed, my ti-86 is even OCed, and it's be too cool to OC my sun boxes!!
I have 4 sparc 5's and 2 Ultra 10's that aren't doing anything right now(well 1 sparc5 is installing Gentoo), and next week I'll have 2 1000E's to play with.
Back to top
View user's profile Send private message
Corp.Nobbs
Tux's lil' helper
Tux's lil' helper


Joined: 02 Oct 2003
Posts: 112
Location: Reading, UK

PostPosted: Mon Nov 03, 2003 10:34 am    Post subject: Reply with quote

NewBlackDak wrote:
ciaranm wrote:
?drop into OBP and up the clockspeed a bit :)


How do you do this?
My PCs are OCed, my Macs are OCed, my ti-86 is even OCed, and it's be too cool to OC my sun boxes!!
I have 4 sparc 5's and 2 Ultra 10's that aren't doing anything right now(well 1 sparc5 is installing Gentoo), and next week I'll have 2 1000E's to play with.


I must admit I haven't been brave enough to try this yet. But I googled around a bit and did find how to change the CPU speed via OBP. This example was to install a 440MHz CPU rather than overclock, but it gives you the idea.

Quote:
10. Install 440 MHz CPU with Solaris 2.6

If you run 440 MHz CPU on new installed system with Solaris 2.6, please follow the instruction below and please install patch #106125, #105181, 105604 on Solaris 2.6 version 3/98, install patch #105181 on Solaris 2.6 version 5/98. You can find these or the latest version patch at sunsolve.sun.com patch finder section.

Actions:
1. Get the system to the ok prompt by stop+a or control+break on PS/2 keyboard
2. key in these commands under ok prompt
ok setenv auto-boot? false
ok reset { system will reset then stop at ok prompt again}

ok also hidden
ok d# 404 at-speed
ok .speed { the speed should be 404 or lower MHz}
3. Install the OS 2.6. then the 2.6 patch files.
4. Verify your system speed under ok prompt
ok .speed { now it should display correct speed of CPU}
ok setenv auto-boot? true { set boot option to default }
5. Cycle power on the system to bring the CPU up to full speed


Having not played around with OBP before I'm scared that I might get an unbootable system and I don't know if you can set a jumper to reset the OBP to factory defaults like on a PC box. If you try it let me know how it goes.
_________________
Asus A8V
AMD64 3500+
1GB XMS3200C2 Pro
120GB Barracuda SATA
Geforce 3
Back to top
View user's profile Send private message
Corp.Nobbs
Tux's lil' helper
Tux's lil' helper


Joined: 02 Oct 2003
Posts: 112
Location: Reading, UK

PostPosted: Mon Nov 03, 2003 10:41 am    Post subject: Reply with quote

I was just looking at the rest of the page where I found that info on changing clock speed. There's some intresting stuff, you may like to take a look:

http://www.tsti.com/support-sparcs-faq1.html
:wink:
_________________
Asus A8V
AMD64 3500+
1GB XMS3200C2 Pro
120GB Barracuda SATA
Geforce 3
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Gentoo on Sparc All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum