Re: jit test failure octave 3.8 on windows

[Tatsuro MATSUOKA]

--- On Fri, 2014/3/7, Philip Nienhuis  wrote:

> tmacchant wrote
> > Hello
> > 
> > On the thread concerning GNU Octave in Japan, there was a report for jit
> > feature of octave-3.8.0 downloaded from http://mxeoctave.osuv.de/ 
> > 
> > octave-3.8.0-5, octave-3.8.1-rc3
> > Test
> > 
> >> a = 1; b = 1; tic; for i=1:1000; for j=1:1000; a = a + b; end; end; toc 
> > Elapsed time is 1.5 seconds. 
> >> jit_enable(1) 
> >> a = 1; b = 1; tic; for i=1:1000; for j=1:1000; a = a + b; end; end; toc
> > (No response)
> > 
> > I have tested the same test on Ubuntu 12.04 LTS (32bit) on octave-3.8.0
> > built by myself on my old notebook .
> > 
> > octave:1> a = 1; b = 1; tic; for i=1:1000; for j=1:1000; a = a + b; end;
> > end; toc 
> > Elapsed time is 4.21553 seconds. 
> > octave:2> jit_enable(1) 
> > octave:3> a = 1; b = 1; tic; for i=1:1000; for j=1:1000; a = a + b; end;
> > end; toc 
> > Elapsed time is 0.891052 seconds. 
> > 
> > In this case jit feature worked correctly.
> > 
> > Have anyone met the same phenomena on mxe-build mingw octave ?
> 
> Hi Tatsuro,
> 
> Yes I think I've reported a similar issue already (IIRC) some months ago for
> the 3.7.7+ series, see here:
> https://mailman.cae.wisc.edu/pipermail/octave-maintainers/2013-November/037260.html
> 
> I hit it when running __run_test_suite__.m. 
> Symptoms:
> - it seems that jit.tst hangs, but:
> - is doesn't, after 20 minutes or so it segfaults.
> IIRC it happened already at the 3rd (still very simple) test in jit.tst.
> More details in bug #40608
> 
> Moving jit.tst out of the way (from share/octave/3.8.0/etc/tests/fixed to
> e.g., share/octave/3.8.0) makes __run_test_suite__.m finish.
> 
> At the time one of the replies mentioned that JIT still has many problems,
> at least on Windows. The advice was to ignore it for the time being (see
> here:
> http://lists.gnu.org/archive/html/octave-bug-tracker/2013-11/msg00519.html)
> 
> On the patch tracker there are improvements for llvm/JIT, made in the course
> of GSoC last year, that haven't been merged yet. Perhaps these patches
> contain fixes that make llvm work better on Windows, who knows.
> 
> Philip

Hello Philip

Thanks for your kind reply.

Regards

Tatsuro