[Debian-med-packaging] SSE3 issue with iqtree when trying to enable i386 (Was: Help with new version of iqtree needed)

[Tung Nguyen]

Dear Andreas and Gert,

It would be great if you can provide a patch to build IQ-TREE on the i386
architectures. We have absolutely no objection to this.

Maybe we will provide a flag to disable the SSE instructions completely for
use on i386. However, if the patch from Gert works well then it would be
the best solution.

Btw, the checkpoint error is related to a new feature in IQ-TREE which
allows resuming interrupted run. It has nothing to do with the patch.

Cheers
Tung

On Thu, Mar 10, 2016, 17:25 Andreas Tille <tille at debian.org> wrote:

> Hi,
>
> since I tried to provide iqtree for some more architectures as it is
> usual in Debian I was facing an issue with SSE3 I asked for help (see
> full story here [1]).  There seems to be a solution for i386.  I wonder
> what you might think about this or whether you prefer to provide iqtree
> for amd64 architecture only.  I do not intend to do some experiments in
> the Debian packaging which you as upstream do not agree upon.
>
> Kind regards and thanks for providing iqtree as free software
>
>       Andreas.
>
>
> [1] https://lists.debian.org/debian-mentors/2016/03/msg00211.html
>
> On Thu, Mar 10, 2016 at 04:38:06PM +0100, Gert Wollny wrote:
> > Hi Andreas,
> >
> > I've update the sse3 patch to not enable sse3 and not define __SSE3,
> > and added an sse2 code path to emulate the _mm_hadd_pd instruction
> > where needed.
> >
> > It compiles, and the alignment sequence test reports the same "failures
> > "and "passed" like the completely unpatched version.
> >
> > However, later I get errors like:
> >
> >   ERROR: Checkpoint (example.phy.ckp.gz) indicates that a previous run
> >   successfully finished
> >   Use `-redo` option if you really want to redo the analysis and
> >   overwrite all output files.
> >   Command exited with non-zero status 2
> >
> > with and without patching the code.
> >
> > best,
> > Gert
> >
> >
>
> --
> http://fam-tille.de
>
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