[mpich-discuss] Building MPE for use with OpenMPI

Jeff Hammond jeff.science at gmail.com
Wed Dec 2 09:16:15 CST 2015 

Hi Bill,

My original idea was wrong.  Since those deprecated MPI-2 functions should
never have const in the declaration, the right solution is to remove
MPE_CONST from them.  The macro logic is fine as-is as long as an MPI
implementation only adds const to MPI-3 functions.

The attached patch implements the aforementioned change.  Of course, it
must be coupled to my patch to MPICH for the function signatures to align.

I don't have write privileges on the MPE repo, not that it is critical.

Best,

Jeff

On Wed, Dec 2, 2015 at 7:08 AM, William Gropp <wgropp at illinois.edu> wrote:

> It sounds like this one needs a special case for the current MPICH bug.
> That isn’t hard and I can do that, Jeff, if you don’t want to. Let me
> know.  It will need a configure test for the suspect cases.
>
> Bill
>
> William Gropp
> Director, Parallel Computing Institute
> Thomas M. Siebel Chair in Computer Science
> Chief Scientist, NCSA
> University of Illinois Urbana-Champaign
>
>
>
>
>
> On Dec 1, 2015, at 10:42 PM, Jeff Hammond <jeff.science at gmail.com> wrote:
>
> Ok, I didn't understand your issue before.  I thought your issue was with
> MPICH not agreeing with OpenMPI.  That needed to be fixed anyways, so it's
> good that your query prompted it, but I'm sorry it wasn't what you needed.
>
> MPE already has MPE_CONST, but it will be "const" whenever MPI_VERSION>=3,
> which is what late-model MPICH will give you.  The solution is probably to
> the logic below to allow for manual override, rather than OR-ing on
> MPI_VERSION, which cannot be overridden.
>
> #if defined(HAVE_CONST_IN_MPI_DECL) || MPI_VERSION >= 3
> #define MPE_CONST const
> #else
> #define MPE_CONST
> #endif
>
> I'll try to work up a patch later.
>
> As for configure, the documentation is rightly written for the user who
> downloads a release tarball, not the git repo.  So yes, you should generate
> it with autogen.sh.
>
> Jeff
>
> On Tue, Dec 1, 2015 at 7:04 PM, Schilling, Herbert W. (GRC-VE00) <
> hschilling at nasa.gov> wrote:
> >
> > Hi Jeff,
> >
> >  Thanks. Unfortunately, that is basically the same source code from
> >
> > ftp://ftp.mcs.anl.gov/pub/mpi/mpe/mpe2.tar.gz
> <https://urldefense.proofpoint.com/v2/url?u=ftp-3A__ftp.mcs.anl.gov_pub_mpi_mpe_mpe2.tar.gz&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=09KUm6Ix-026rXC4EqSVYu0fyrKXoacYTihpuNfeGP8&e=>
> >
> > where I had the issues with the conflicting declarations as Pavan talked
> about.
> >
> > I could remove the deprecated routines as most of the problems are
> caused by them, but it looks like some non-deprecated routines also have
> the const issue, e.g.
> >
> > visual_mess.c:560: error: conflicting types for 'MPI_Issend'
> > /u/hschilli/local/include/mpi.h:1543: error: previous declaration of
> 'MPI_Issend' was here
> >
> >
> > BTW, that repo for MPE doesn't appear to have a configure file. I know I
> could create it with autogen.sh but the INSTALL file doesn't say that. It
> just says run configure. Might be confusing for some people, I think!
> >
> > Thanks for everyone's help
> >
> >
> >
> >
> >
> > On Dec 1, 2015, at 2:03 PM, Jeff Hammond <jeff.science at gmail.com>
> >  wrote:
> >
> > MPE lives here now: http://git.mpich.org/mpe.git/
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__git.mpich.org_mpe.git_&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=muO3nDEckVwoUMGSzekDn9NdA9_9z6g6DY7TQQXh4Kg&e=>
> >
> > Jeff
> >
> > On Tue, Dec 1, 2015 at 10:15 AM, Schilling, Herbert W. (GRC-VE00) <
> hschilling at nasa.gov> wrote:
> >>
> >> Hi Jeff,
> >>
> >>  Thanks. Pardon my ignorance but I I wanted to just use MPE with an
> existing OpenMPI installation and it's not clear to me ( even after
> searching and reading ), how to do that from the full MPICH code base at
> that repo. I can't really even find MPE in that code at all. What am I
> missing?
> >>
> >>  Thanks
> >>
> >> On Dec 1, 2015, at 10:03 AM, Jeff Hammond <jeff.science at gmail.com>
> >>  wrote:
> >>
> >> Herbert:
> >>
> >> Please try
> https://github.com/jeffhammond/mpich/tree/hammond-mpi2-deprecated-functions-noconst
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_jeffhammond_mpich_tree_hammond-2Dmpi2-2Ddeprecated-2Dfunctions-2Dnoconst&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=wpHD-QIiCAD_DZYQJ__b-9fWiXzAXhAKxkG2DoZKqOI&e=>
> and let me know if you see any problems.
> >>
> >> Best,
> >>
> >> Jeff
> >>
> >> On Tue, Dec 1, 2015 at 5:46 AM, Schilling, Herbert W. (GRC-VE00) <
> hschilling at nasa.gov> wrote:
> >>>
> >>> Hi Jeff and Pavan,
> >>>
> >>>  Thanks for all the help on this.  Jeff, when you have the fix up
> there, I can give it a shot!
> >>>
> >>>
> >>> On Dec 1, 2015, at 1:15 AM, Jeff Hammond <jeff.science at gmail.com>
> >>>  wrote:
> >>>
> >>> Facepalm.  Indeed, changing the header but not the implementation was
> pretty dumb on my part.  I'll fix that tomorrow.
> >>>
> >>> I have no opinion on the ABI situation, particularly since I know
> there are other folks that Intel that do.
> >>>
> >>> Jeff
> >>>
> >>> On Mon, Nov 30, 2015 at 9:00 PM, Balaji, Pavan <balaji at anl.gov> wrote:
> >>>>
> >>>>
> >>>> Thanks, Jeff.  The actual function definitions should be modified as
> well, which your patch seems to miss.
> >>>>
> >>>> But I think the potentially time consuming part is to get buy-in from
> all the ABI consortium folks for this change.  It doesn't exactly break ABI
> for applications, but will be an annoying change for tools.  Ken is looking
> into this.
> >>>>
> >>>>   -- Pavan
> >>>>
> >>>> > On Nov 30, 2015, at 10:54 PM, Jeff Hammond <jeff.science at gmail.com>
> wrote:
> >>>> >
> >>>> > Pavan:
> >>>> >
> >>>> > See hammond-mpi2-deprecated-functions-noconst branch on
> mpich-review.  I found three functions where this change should be made.  I
> do not know if that is the full list, so someone should verify.
> >>>> >
> >>>> > Best,
> >>>> >
> >>>> > Jeff
> >>>> >
> >>>> > On Mon, Nov 30, 2015 at 8:08 PM, Balaji, Pavan <balaji at anl.gov>
> wrote:
> >>>> >
> >>>> > MPI_Type_struct is not a part of the MPI standard anymore and is
> replaced by MPI_Type_create_struct.  Both MPICH and Open MPI decided to
> retain it, but followed different directions for it.  MPICH decided to
> follow the same convention as MPI_Type_create_struct with the const
> additions.  Open MPI decided to keep the old prototypes as is.
> >>>> >
> >>>> > Unfortunately, MPE got stuck in between the two.  The best approach
> would be to simply remove those functions from MPE and this problem just
> goes away.  Would you be able to do that and contribute a patch?
> >>>> >
> >>>> > More generally, I think MPICH was overzealous in trying to constify
> prototypes for the deleted functions.  It should have just left them as
> they are, like what Open MPI did.  We'll figure out what to do about that
> internally, but that's not going to be a quick change because of ABI and
> other such stuff.
> >>>> >
> >>>> > Thanks,
> >>>> >
> >>>> >   -- Pavan
> >>>> >
> >>>> > > On Nov 30, 2015, at 8:14 PM, Schilling, Herbert W. (GRC-VE00) <
> hschilling at nasa.gov> wrote:
> >>>> > >
> >>>> > > Hi,
> >>>> > >
> >>>> > >  I am trying to build MPE for use with OpenMPI. I built from
> source Version 1.10.1 of OpenMPI.
> >>>> > >
> >>>> > >  I am using this version of MPE
> ftp://ftp.mcs.anl.gov/pub/mpi/mpe/mpe2.tar.gz
> <https://urldefense.proofpoint.com/v2/url?u=ftp-3A__ftp.mcs.anl.gov_pub_mpi_mpe_mpe2.tar.gz&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=09KUm6Ix-026rXC4EqSVYu0fyrKXoacYTihpuNfeGP8&e=>
> >>>> > >
> >>>> > >  Should this work fine? I followed the instructions to build like
> this:
> >>>> > >
> >>>> > >     ${MPE_SRC_DIR}/configure
> MPI_CC=${OPENMPI_INSTALL_DIR}/bin/mpicc \
> >>>> > >                             CC=<C_COMPILER_used_to_build_OpenMPI>
> \
> >>>> > >
> MPI_F77=${OPENMPI_INSTALL_DIR}/bin/mpif77 \
> >>>> > >
> F77=<FORTRAN_COMPILER_used_to_build_OpenMPI> \
> >>>> > >                             --with-java2=/usr/local/j2sdk-1.4.2
> >>>> > >                             --prefix=<MPE_INSTALL_DIR>
> >>>> > >    make
> >>>> > >    make install
> >>>> > >
> >>>> > >
> >>>> > >
> >>>> > >
> >>>> > > I keep running into problems with conflicting declarations
> >>>> > >
> >>>> > >
> >>>> > >  log_mpi_core.c:5611: error: conflicting types for
> 'MPI_Type_struct'
> >>>> > >  /u/hschilli/local/include/mpi.h:1796: error: previous
> declaration of 'MPI_Type_struct' was here
> >>>> > >
> >>>> > >
> >>>> > > I think the issue is that MPE's declaration uses some const
> qualifiers while OpenMPI does not.
> >>>> > >
> >>>> > >
> >>>> > >
> >>>> > > I tried hacking my way through this with the macro
> >>>> > >
> >>>> > > HAVE_CONST_IN_MPI_DECL
> >>>> > >  and MPE_CONST but no luck so far.
> >>>> > >
> >>>> > >
> >>>> > >
> >>>> > > What am I doing wrong?
> >>>> > >
> >>>> > >
> >>>> > > Thanks in advance.
> >>>> > >
> >>>> > > ---------
> >>>> > > Herb Schilling
> >>>> > > Scientific Applications and Visualization Team
> >>>> > > http://ocio.grc.nasa.gov/gvis
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__ocio.grc.nasa.gov_gvis&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=Ez2x7qneaHrywKva2K_y8Z0ausBAlYNqS-qKGicXseI&e=>
> >>>> > > Office of the Chief Information Officer
> >>>> > > NASA Glenn Research Center
> >>>> > > hschilling at nasa.gov
> >>>> > >
> >>>> > >
> >>>> > >
> >>>> > >
> >>>> > > _______________________________________________
> >>>> > > discuss mailing list     discuss at mpich.org
> >>>> > > To manage subscription options or unsubscribe:
> >>>> > > https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
> >>>> >
> >>>> > _______________________________________________
> >>>> > discuss mailing list     discuss at mpich.org
> >>>> > To manage subscription options or unsubscribe:
> >>>> > https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
> >>>> >
> >>>> >
> >>>> >
> >>>> > --
> >>>> > Jeff Hammond
> >>>> > jeff.science at gmail.com
> >>>> > http://jeffhammond.github.io/
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__jeffhammond.github.io_&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=ZEd7PeXlQBugVrUONV0tJUSg6SYatGWxL9RPKYurdh0&e=>
> >>>> > _______________________________________________
> >>>> > discuss mailing list     discuss at mpich.org
> >>>> > To manage subscription options or unsubscribe:
> >>>> > https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
> >>>>
> >>>> _______________________________________________
> >>>> discuss mailing list     discuss at mpich.org
> >>>> To manage subscription options or unsubscribe:
> >>>> https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
> >>>
> >>>
> >>>
> >>>
> >>> --
> >>> Jeff Hammond
> >>> jeff.science at gmail.com
> >>> http://jeffhammond.github.io/
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__jeffhammond.github.io_&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=ZEd7PeXlQBugVrUONV0tJUSg6SYatGWxL9RPKYurdh0&e=>
> >>> _______________________________________________
> >>> discuss mailing list     discuss at mpich.org
> >>> To manage subscription options or unsubscribe:
> >>> https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
> >>>
> >>>
> >>> ---------
> >>> Herb Schilling
> >>> Scientific Applications and Visualization Team
> >>> http://ocio.grc.nasa.gov/gvis
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__ocio.grc.nasa.gov_gvis&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=Ez2x7qneaHrywKva2K_y8Z0ausBAlYNqS-qKGicXseI&e=>
> >>> Office of the Chief Information Officer
> >>> NASA Glenn Research Center
> >>> hschilling at nasa.gov
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> _______________________________________________
> >>> discuss mailing list     discuss at mpich.org
> >>> To manage subscription options or unsubscribe:
> >>> https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
> >>
> >>
> >>
> >>
> >> --
> >> Jeff Hammond
> >> jeff.science at gmail.com
> >> http://jeffhammond.github.io/
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__jeffhammond.github.io_&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=ZEd7PeXlQBugVrUONV0tJUSg6SYatGWxL9RPKYurdh0&e=>
> >> _______________________________________________
> >> discuss mailing list     discuss at mpich.org
> >> To manage subscription options or unsubscribe:
> >> https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
> >>
> >>
> >> ---------
> >> Herb Schilling
> >> Scientific Applications and Visualization Team
> >> http://ocio.grc.nasa.gov/gvis
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__ocio.grc.nasa.gov_gvis&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=Ez2x7qneaHrywKva2K_y8Z0ausBAlYNqS-qKGicXseI&e=>
> >> Office of the Chief Information Officer
> >> NASA Glenn Research Center
> >> hschilling at nasa.gov
> >>
> >>
> >>
> >>
> >>
> >> _______________________________________________
> >> discuss mailing list     discuss at mpich.org
> >> To manage subscription options or unsubscribe:
> >> https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
> >
> >
> >
> >
> > --
> > Jeff Hammond
> > jeff.science at gmail.com
> > http://jeffhammond.github.io/
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__jeffhammond.github.io_&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=ZEd7PeXlQBugVrUONV0tJUSg6SYatGWxL9RPKYurdh0&e=>
> > _______________________________________________
> > discuss mailing list     discuss at mpich.org
> > To manage subscription options or unsubscribe:
> > https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
> >
> >
> > ---------
> > Herb Schilling
> > Scientific Applications and Visualization Team
> > http://ocio.grc.nasa.gov/gvis
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__ocio.grc.nasa.gov_gvis&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=Ez2x7qneaHrywKva2K_y8Z0ausBAlYNqS-qKGicXseI&e=>
> > Office of the Chief Information Officer
> > NASA Glenn Research Center
> > hschilling at nasa.gov
> >
> >
> >
> >
> >
> > _______________________________________________
> > discuss mailing list     discuss at mpich.org
> > To manage subscription options or unsubscribe:
> > https://lists.mpich.org/mailman/listinfo/discuss
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.mpich.org_mailman_listinfo_discuss&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=i30ClRowT_Rq93CEIztdJqwnL6wzb3yQlmiaaFrpy3c&e=>
>
>
>
>
> --
> Jeff Hammond
> jeff.science at gmail.com
> http://jeffhammond.github.io/
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__jeffhammond.github.io_&d=BQMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=195OD1c98cxYlIPBUDzl00KueizThEKs34a9DvL37eY&m=2mD7C1lXoN7cWQsEh7VfZJ7ADs3IgX4EpfbYcQZUBH4&s=ZEd7PeXlQBugVrUONV0tJUSg6SYatGWxL9RPKYurdh0&e=>
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-- 
Jeff Hammond
jeff.science at gmail.com
http://jeffhammond.github.io/
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