Yes, please do. On Tue, Nov 29, 2016, 1:52 PM Tobias Hansen <than...@debian.org> wrote:
> On 11/29/2016 06:01 PM, Tobias Hansen wrote: > > On 11/29/2016 03:53 PM, Doug Torrance wrote: > >> Control: reassign -1 src:givaro > >> > >> On 11/29/2016 09:58 AM, Tobias Hansen wrote: > >>> I think I figured out at least the test failures with "Illegal > >>> instruction" on i386. The problem is that givaro is built using cpu > >>> extensions that are not allowed. > >>> > >>> Jerome figured out in [1] that the problem happens when givaro code is > >>> called. And sure enough: > >>> > >>> objdump -S /usr/lib/i386-linux-gnu/libgivaro.so.9.0.0 | grep > >>> '\b\(ymm\|zmm\|vfm\)' > >>> 15411: c4 e3 79 6b 8b a4 29 vfmaddsd > >>> %xmm2,-0x1d65c(%ebx),%xmm0,%xmm1 > >>> 154d1: c4 e3 69 6b 8b ac 29 vfmaddsd > >>> %xmm0,-0x1d654(%ebx),%xmm2,%xmm1 > >>> > >>> And in the i386 build logs for givaro there are these flags: > >>> -mmmx -mpopcnt -msse -msse2 -msse3 -msse4.1 -msse4.2 -msse4a -mavx > >>> -mfma4 -mfpmath=sse > >>> > >>> Do you have time in the next days to disable these flags? Otherwise I > >>> can do it. (I'm not sure if some of these flags (mmx, sse ?) are > allowed > >>> on i386 and didn't find that info. Ximin, do you know this?) > >> > >> Sure, I can take a look. I think it should be a simple --disable-simd > >> in d/rules (we did the same in fflas-ffpack). > >> > >> Doug > > > > Thanks! I tried building it but now there seems to be an issue similar > > to [1]: > > > > FAIL: test-ringarith > > ==================== > > > > 997167681959697!=997167682008849 failed (at line 123) > > x y failed ! > > MEDmax failed ! > > FAIL test-ringarith (exit status: 255) > > > > And it even fails when setting the flag -ffp-contract=off . > > Note that now the failure seems to be related to ModularExtended<double> > > instead of ModularExtended<float> (MEDmax instead of MEFmax in the error > > message). > > > > Best, > > Tobias > > > > [1] https://github.com/linbox-team/givaro/issues/25 > > Ok, a workaround is to set -ffloat-store (like the Fedora package). I > pushed this change to the git repo. Can I upload this? > > Best, > Tobias >
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