On 1/9/2014 4:30 PM, Marco Patzer wrote:
On 2014–01–09 Marco Pallante wrote:
How do I use LuajitTeX?
context --jit <file>
I've seen the two options --jit and --jiton
which seem to be the right way. Am I right?
context --help | grep jit
--jit use luajittex with jit turned off (only use the faster virtual
machine)
--jiton use luajittex with jit turned on (in most cases not faster, even
slower)
I've never come across a real world document where --jiton was
faster than --jit, so just stick with --jit.
in fact we found that --jiton is slower ... just use --jit and benefit
from the faster virtual machine (the fact that jitting can slow down
gets obscured by the fact that the vm is twice as fast); i guess that
the context lua codebase is too large to benefit from jit and also
hardly uses jitabble built-in functions (much if that is hardcoded in
jit) and the amount of calls is too low to trade off jitting and using
(we don't do number crunching or have applications running for more than
a few seconds)
Hans
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