Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
Userland - 32 or 64 bit?
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
Lori
Apprentice
Apprentice


Joined: 30 Mar 2004
Posts: 265
Location: Barcelona, Spain

PostPosted: Tue Apr 13, 2004 5:32 pm    Post subject: Userland - 32 or 64 bit? Reply with quote

I read a post some time ago, I don't remember which, and somebody said that it's not possible to get any hardware 3D acceleration from our Creator3D card and except for the kernel, everything is compiled 32 bit.

I was a little sceptical about the 3D stuff, because I had DRI,GLX loading perfectly with X. But all OpenGL screensavers break so, I gave credit and gave up. Today I had an ideea: what if I add -m64 to CFLAGS!? Am I going to have 64 bit binaries or not? Is this going to give any perfomance boost? At least for some of the applications maybe... since more and more are getting developed and optimized for 64 bit, because of the popular amd64 platform...

It would be a shame using my dear UltraSparc only for 32 bit processing if 64 bit would be possible... Anyone tried? Will -m64 change anything? Or I shouldn't even try?
_________________
"The hunt is sweeter then the kill."
Registered Linux User #176911
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: Tue Apr 13, 2004 8:59 pm    Post subject: Reply with quote

It won't work, and if it did it would be slower.
Back to top
View user's profile Send private message
Lori
Apprentice
Apprentice


Joined: 30 Mar 2004
Posts: 265
Location: Barcelona, Spain

PostPosted: Fri Apr 16, 2004 9:59 am    Post subject: Reply with quote

This is pretty sad... :(
_________________
"The hunt is sweeter then the kill."
Registered Linux User #176911
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: Fri Apr 16, 2004 3:17 pm    Post subject: Reply with quote

Send patches :)
Back to top
View user's profile Send private message
Lori
Apprentice
Apprentice


Joined: 30 Mar 2004
Posts: 265
Location: Barcelona, Spain

PostPosted: Fri Apr 16, 2004 5:00 pm    Post subject: Reply with quote

I wish... :D

But what makes 64 bit userland possible the on FreeBSD? They use gcc. Indeed, they use BSD make instead of GNU make, but is that so important? An interesting article here.
_________________
"The hunt is sweeter then the kill."
Registered Linux User #176911
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: Fri Apr 16, 2004 5:05 pm    Post subject: Reply with quote

Well, we *could* do a pure 64bit userland... We'd need to do some pretty heavy glibc patching, because it's kinda b0rked, but it's not impossible... The aim is to eventually have dual 32/64, so those few apps that benefit from 64bit can be without slowing the rest of the system down...
Back to top
View user's profile Send private message
Lori
Apprentice
Apprentice


Joined: 30 Mar 2004
Posts: 265
Location: Barcelona, Spain

PostPosted: Fri Apr 16, 2004 5:13 pm    Post subject: Reply with quote

OK, one last question, and i'll stop bugging you :)

Why would in current state applications compiled with -m64 (suppose it works) slow other applications down? If you have same good links about this, that would be great...
_________________
"The hunt is sweeter then the kill."
Registered Linux User #176911
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: Fri Apr 16, 2004 5:27 pm    Post subject: Reply with quote

Short answer: bigger code.
Long answer: this has been covered at length on the sparc-linux mailing list, I suggest you search the archives.
Back to top
View user's profile Send private message
Ferris
Retired Dev
Retired Dev


Joined: 13 Jan 2003
Posts: 426
Location: N. Virginia (USA)

PostPosted: Fri Apr 16, 2004 6:37 pm    Post subject: Reply with quote

Lori, concerning your screen savers:

OpenGL anything will break without a patch: See bug #19776. You can
apply them by hand like this (it's not pretty, but it works and isn't hard).


    * emerge xfree
    * wait for the source unpack to complete
    * ^Z
    * Follow the instructions in bug #19776, comment 50 (except instead of -r3,
    you will be using -r5)
    * fg
    * wait a few hours


I'm going to try to get this into the ebuilds for -r[56], but it would be overoptimistic of you
to hold out for that. (We're talking a few days, not weeks: I have it in
my own x11-base/xfree and it all works, but the reverification is a bear.)

Hope this helps, so far as OpenGL goes.
Regards,
Back to top
View user's profile Send private message
Lori
Apprentice
Apprentice


Joined: 30 Mar 2004
Posts: 265
Location: Barcelona, Spain

PostPosted: Tue Apr 20, 2004 5:42 pm    Post subject: Reply with quote

Well I did as you instructed me... now I don't get SIGSEGV anymore... but no GL screensavers either, meaning that if I press the Preview, I get a blank screen, nothing more. :(
_________________
"The hunt is sweeter then the kill."
Registered Linux User #176911
Back to top
View user's profile Send private message
Ferris
Retired Dev
Retired Dev


Joined: 13 Jan 2003
Posts: 426
Location: N. Virginia (USA)

PostPosted: Tue Apr 20, 2004 10:50 pm    Post subject: Reply with quote

Unfortunately, I don't know how to get you beyond the Seg fault. Maybe
someone else knows something about the screensavers?
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