context team mailing list archive

[Yue Wang <yuleopen@xxxxxxxxx>]

Hi, Taco and Mojca:


On Sat, Jul 18, 2009 at 9:00 PM, Mojca
Miklavec<mojca.miklavec.lists@xxxxxxxxx> wrote:
> On Sat, Jul 18, 2009 at 14:24, Yue Wang wrote:
>> just a simple test. (works on mac os x 10.5.x, intel mac. on idea on
>> other platforms...)
>>
>> 240:luatex yue$ svn diff
>> Index: build.sh
>> ===================================================================
>> --- build.sh    (revision 2888)
>> +++ build.sh    (working copy)
>> @@ -59,6 +59,11 @@
>>  if [ `uname` = "Darwin" ] ;
>>  then
>>    export MACOSX_DEPLOYMENT_TARGET=10.4
>> +   CFLAGS="-arch x86_64 -arch i386 $CFLAGS"
>> +   XCFLAGS="-arch x86_64 -arch i386 $XCFLAGS"
>> +   CXXFLAGS="-arch x86_64 -arch i386 $CXXFLAGS"
>> +   LDFLAGS="-arch x86_64 -arch i386 $LDFLAGS"
>> +   export CFLAGS CXXFLAGS LDFLAGS XCFLAGS
>>  fi;
>
> I'm sorry, I didn't read careful enough. I thought we were talking
> about intel vs. ppc.
>
> Adding those flags to build.shu nconditionally would mean that anyone
> trying to compile LuaTeX on ppc won't be able to do so for his own
> platform, so such flags would need to go to a separate section (if
> user supplies some special flag to build in such mode).
>

my fault. there should be a conditional test there.
but I have no ppc machine to test as i mentioned in the previous mail.

> We definitely need to start thinking about 64-bit support, but not
> unconditionally. Apparently 10.6  won't support ppc any more and Yue
> says that 64-bit version of luatex runs slower and consumes more
> memory (+ being twice as big).
>

Yes, here are the log files when running the x86 and x86_64 binaries
using the same test document.

x86_64:

mkiv lua stats : used config path          -
/Users/yue/context/tex/texmf/web2c/texmf.cnf
mkiv lua stats : used cache path           - /Users/yue/context/tex/texmf-cache
mkiv lua stats : input load time           - 0.053 seconds
mkiv lua stats : stored bytecode data      - 170 modules, 45 tables, 215 chunks
mkiv lua stats : node list callback tasks  - 4 unique tasks, 3
created, 810 calls
mkiv lua stats : cleaned up reserved nodes - 39 nodes, 10 lists of 1412
mkiv lua stats : node memory usage         - 138 attribute, 19
glue_spec, 46 attribute_list, 46 local_par, 2 dir
mkiv lua stats : h-node processing time    - 0.922 seconds including kernel
mkiv lua stats : attribute processing time - 0.257 seconds
mkiv lua stats : loaded patterns           - en:us:pat:exc:2
mkiv lua stats : startup time              - 1.205 seconds (including
runtime option file processing)
mkiv lua stats : callbacks                 - direct: 3838, indirect:
5118, total: 8956
mkiv lua stats : loaded fonts              - 38 files:
adobesongstd-light.otf minionpro-bold.otf minionpro-it.otf
minionpro-regular.otf myriadpro-bold.otf myriadpro-regular.otf
tektonpro-regular.otf lmmono12-regular.otf lmmono8-regular.otf
lmmono9-regular.otf lmroman12-bold.otf lmroman12-regular.otf
lmroman7-bold.otf lmroman7-regular.otf lmroman9-bold.otf
lmroman9-regular.otf lmsans12-regular.otf lmsans8-regular.otf
lmsans9-regular.otf eufb10.tfm eufb7.tfm eufb9.tfm eufm10.tfm
eufm7.tfm eufm9.tfm msam10.tfm msam7.tfm msbm10.tfm msbm7.tfm
lmex10.tfm lmmi12.tfm lmmi7.tfm lmmi9.tfm lmmib10.tfm lmmib7.tfm
lmsy10.tfm lmsy7.tfm lmsy9.tfm
mkiv lua stats : fonts load time           - 2.163 seconds
mkiv lua stats : graphics processing time  - 0.098 seconds including tex, n=23
mkiv lua stats : result saved in file      - ps.pdf
mkiv lua stats : luatex banner             - this is luatex, version
beta-0.42.0-2009071820
mkiv lua stats : control sequences         - 30398 of -443887883
mkiv lua stats : current memory usage      - 104 MB (ctx: 107 MB)
mkiv lua stats : runtime                   - 7.127 seconds, 28
processed pages, 28 shipped pages, 3.929 pages/secondMTXrun | total
runtime: 7.198




i386:

mkiv lua stats : used config path          -
/Users/yue/context/tex/texmf/web2c/texmf.cnf
mkiv lua stats : used cache path           - /Users/yue/context/tex/texmf-cache
mkiv lua stats : input load time           - 0.038 seconds
mkiv lua stats : stored bytecode data      - 170 modules, 45 tables, 215 chunks
mkiv lua stats : node list callback tasks  - 4 unique tasks, 3
created, 810 calls
mkiv lua stats : cleaned up reserved nodes - 39 nodes, 10 lists of 1412
mkiv lua stats : node memory usage         - 138 attribute, 19
glue_spec, 46 attribute_list, 46 local_par, 2 dir
mkiv lua stats : h-node processing time    - 0.608 seconds including kernel
mkiv lua stats : attribute processing time - 0.162 seconds
mkiv lua stats : loaded patterns           - en:us:pat:exc:2
mkiv lua stats : startup time              - 0.898 seconds (including
runtime option file processing)
mkiv lua stats : callbacks                 - direct: 3838, indirect:
5118, total: 8956
mkiv lua stats : loaded fonts              - 38 files:
adobesongstd-light.otf minionpro-bold.otf minionpro-it.otf
minionpro-regular.otf myriadpro-bold.otf myriadpro-regular.otf
tektonpro-regular.otf lmmono12-regular.otf lmmono8-regular.otf
lmmono9-regular.otf lmroman12-bold.otf lmroman12-regular.otf
lmroman7-bold.otf lmroman7-regular.otf lmroman9-bold.otf
lmroman9-regular.otf lmsans12-regular.otf lmsans8-regular.otf
lmsans9-regular.otf eufb10.tfm eufb7.tfm eufb9.tfm eufm10.tfm
eufm7.tfm eufm9.tfm msam10.tfm msam7.tfm msbm10.tfm msbm7.tfm
lmex10.tfm lmmi12.tfm lmmi7.tfm lmmi9.tfm lmmib10.tfm lmmib7.tfm
lmsy10.tfm lmsy7.tfm lmsy9.tfm
mkiv lua stats : fonts load time           - 1.643 seconds
mkiv lua stats : graphics processing time  - 0.082 seconds including tex, n=23
mkiv lua stats : result saved in file      - ps.pdf
mkiv lua stats : luatex banner             - this is luatex, version
beta-0.42.0-2009071723
mkiv lua stats : control sequences         - 30398 of 147189
mkiv lua stats : current memory usage      - 69 MB (ctx: 71 MB)
mkiv lua stats : runtime                   - 5.173 seconds, 28
processed pages, 28 shipped pages, 5.413 pages/secondMTXrun | total
runtime: 5.221


as you can see, 64 bits is slower, and consume much more memory.
(usually 64bits apps should perform faster on math since there are
extra registers)

In my humble opinion this is because TeX manages memory by it self...
and maybe a 64bit memory word of packed data uses twice of memory as
32bits one.... I am not sure.

> We should either discuss it a bit or wait until the first user gets
> bitten by the issue. After all we also depend on TL binaries that are
> most probably not 64-bit.


well, I think we can provide more option to the users... since luatex
have been converted to C completely, so no web2c is involved (that is,
no yacc and bison anymore....) and now it might be possible to

- build luatex using Visual Studio
- build under mingw on Windows, (not cross compile)
- build on various machine using llvm-clang (clang is the future
compiler for Mac OS X, FreeBSD and many other systems. clang compiles
faster, generates better code, and it's free under uiuc license
(better than gpl). GCC might be dropped out of the base system
completely in FreeBSD 9.0)

>
> Mojca
>
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Yue Wang