Re: [HELP] [PORT] sparc vs sparc5 vs ultrasparc?
On Sat, 2004-12-25 at 21:34, Marcelo E. Magallon wrote: Hi, mesa upstream includes configuration files for three Sparc architectures: sparc, sparc5 and ultrasparc. snip 3. Does this make sense? AFAIUI the v8 has divide instructions which make it much more bearable than generic sparc code. snip The exact flags depend a bit on the version of gcc you're using, assuming you're using = 3.3 : Broadly speaking see http://gcc.gnu.org/onlinedocs/gcc-3.3/gcc/SPARC-Options.html#SPARC-Options However, for what it's worth I would be tempted to rename (upstream) the three architectures sparcv7, sparcv8 and sparcv9, respectively using CFLAGS=-mcpu=v7 -mtune=cypress CFLAGS=-mcpu=v8 -mtune=v8 CFLAGS=-mcpu=v9 -mtune=ultrasparc If you're using = 3.4 then add -mvis to the sparcv9 architecture. This is morally the same as what you had before and gives a good portability / optimality trade off. Then build the sparcv8 version for the default package for the (Debian) sparc architecture and create a second package with an optimised version for UltraSparc machines (using the upstream sparcv9). HTH Cheers, - Martin -- Martin [EMAIL PROTECTED] Seasons change, things come to pass
Re: [HELP] [PORT] sparc vs sparc5 vs ultrasparc?
Marcelo E. Magallon [EMAIL PROTECTED] writes: ultrasparc: CC = gcc CXX = g++ CFLAGS = -mv8 -mtune=ultrasparc ... # the rest is the same as sparc These should be fine for Sarge on SPARC. v8 is the default instruction set for Sarge and tuning for ultrasparc isn't such a bad thing. -- Thanks, Jim http://www.student.cs.uwaterloo.ca/~ja2morri/ http://phython.blogspot.com http://open.nit.ca/wiki/?page=jim
Re: [HELP] [PORT] sparc vs sparc5 vs ultrasparc?
On Sun, Dec 26, 2004 at 01:54:10AM -0500, James A. Morrison wrote: Marcelo E. Magallon [EMAIL PROTECTED] writes: ultrasparc: CC = gcc CXX = g++ CFLAGS = -mv8 -mtune=ultrasparc ... # the rest is the same as sparc These should be fine for Sarge on SPARC. v8 is the default instruction set for Sarge and tuning for ultrasparc isn't such a bad thing. Thanks. What does default instruction set mean? I *am* providing a library compiled with only -O2. What I'm looking for here is to provide an optimized library *too*. From my understanding this can make a significant difference on Sparc. Should I use -mv9 for that? Marcelo
Re: [HELP] [PORT] sparc vs sparc5 vs ultrasparc?
Marcelo E. Magallon [EMAIL PROTECTED] writes: On Sun, Dec 26, 2004 at 01:54:10AM -0500, James A. Morrison wrote: Marcelo E. Magallon [EMAIL PROTECTED] writes: ultrasparc: CC = gcc CXX = g++ CFLAGS = -mv8 -mtune=ultrasparc ... # the rest is the same as sparc These should be fine for Sarge on SPARC. v8 is the default instruction set for Sarge and tuning for ultrasparc isn't such a bad thing. Thanks. What does default instruction set mean? I *am* providing a library compiled with only -O2. What I'm looking for here is to provide an optimized library *too*. From my understanding this can make a significant difference on Sparc. Should I use -mv9 for that? Marcelo -mcpu=ultrasparc would be good for the optimized libraries. -- Thanks, Jim http://www.student.cs.uwaterloo.ca/~ja2morri/ http://phython.blogspot.com http://open.nit.ca/wiki/?page=jim
[HELP] [PORT] sparc vs sparc5 vs ultrasparc?
Hi, mesa upstream includes configuration files for three Sparc architectures: sparc, sparc5 and ultrasparc. sparc (this is actually the same as linux) CC = gcc CXX = g++ sparc5: CC = gcc CXX = g++ CFLAGS = -mcpu=ultrasparc ... # the rest is the same as for sparc ultrasparc: CC = gcc CXX = g++ CFLAGS = -mv8 -mtune=ultrasparc ... # the rest is the same as sparc Questions: 1. Will that work on *any* current Sparc autobuilder? 2. I have to put the sparc libraries in /usr/lib, where do I put the sparc5 and ultrasparc ones? 3. Does this make sense? AFAIUI the v8 has divide instructions which make it much more bearable than generic sparc code. 4. There's some assembly versions of a couple of routines, but they are only used on sunos, not linux. I don't know if these are maintained or not. Is someone willing to try this out and tell me if these work? Grep for USE_SPARC_ASM in the mesa sources (6.2.1 from upstream). TIA, Marcelo
Re: [HELP] [PORT] sparc vs sparc5 vs ultrasparc?
On Sat, 25 Dec 2004 15:34:17 -0600 Marcelo E. Magallon [EMAIL PROTECTED] wrote: 4. There's some assembly versions of a couple of routines, but they are only used on sunos, not linux. I don't know if these are maintained or not. Is someone willing to try this out and tell me if these work? Grep for USE_SPARC_ASM in the mesa sources (6.2.1 from upstream). That's a bug in the Makefiles, Linux/Sparc should make use of them too. They are maintained and work, I wrote them I should know :-)
Re: [HELP] [PORT] sparc vs sparc5 vs ultrasparc?
On Sat, Dec 25, 2004 at 02:05:24PM -0800, David S. Miller wrote: 4. There's some assembly versions of a couple of routines, but they are only used on sunos, not linux. I don't know if these are maintained or not. Is someone willing to try this out and tell me if these work? Grep for USE_SPARC_ASM in the mesa sources (6.2.1 from upstream). That's a bug in the Makefiles, Linux/Sparc should make use of them too. They are maintained and work, I wrote them I should know :-) Yes, I still remember :-) Thanks for the heads up, I'll fix the makefiles and post and patch to mesa-dev. Marcelo
