[Llvm-bgq-discuss] bgclang r185415-20130701 on vesta/mira

[Hal Finkel]

Erik,

Okay, thanks!

The last bug was not QPX-related at all, this seems like it is QPX-related, and regardless certainly a different bug. I'll let you know when it is fixed.

 -Hal

----- Original Message -----
> 
> Hal
> 
> 
> The failing code is now in ~eschnett/vecmathlib on Vesta. The
> following sequence of commands reproduces this problem (lengthy on
> purpose):
> 
> 
> 
> /home/projects/llvm/bin/bgclang++11
> -I/soft/compilers/ibmcmp-may2013/xlmass/bg/7.3/include -E test.cc >
> test.i
> /home/projects/llvm/bin/bgclang++11 -S test.i
> /home/projects/llvm/bin/bgclang++11 -c test.s
> /home/projects/llvm/bin/bgclang++11 -o test test.o
> -L/soft/compilers/ibmcmp-may2013/xlmass/bg/7.3/bglib64 -lmassv
> -lmass -lmass_simd
> qsub -A DynamicDevel -n 1 -t 10 ./test
> 
> 
> That is, you can either look at test.cc, or at the preprocessed
> test.i to see the problem. The current output is located in the file
> "106581.output".
> 
> 
> The screen output will be somewhat jumbled -- sorry, I can clean this
> up. The screen output indicates that a vector4double containing all
> false (all elements -1.0) has operator[] applied to all elements,
> which works correctly. These are then converted to bool (by a
> routine of mine), which works fine -- these are the lines showing
> "[]=0" where 0 indicates false. The line "fvml(x)=1 [0x01]" then
> shows that the result of the 3 scalar && operations yields true.
> 
> 
> If the error is not present, then the line "Error in all(false):"
> should disappear.
> 
> 
> The relevant code that fails is the routine all() in the file
> vec_qpx_double4.h. This routine calls operator[] on a vector, and
> then reduces the elements via the && operators.
> 
> 
> Let me know if you need more information.
> 
> 
> -erik
> 
> 
> 
> 
> 
> On Fri, Jul 5, 2013 at 2:57 PM, Hal Finkel < hfinkel at anl.gov > wrote:
> 
> 
> 
> ----- Original Message -----
> > 
> > Hal
> > 
> > 
> > I this version supposed to handle the && operator correctly?
> 
> Yes, I fixed the bug responsible for that issue.
> 
> 
> > 
> > 
> > I believe that my original test case now works fine, but I
> > encounter
> > a different problem with the && and || operators, even without
> > optimization.
> 
> Can you point me to the failing code and I'll take a look.
> 
> Thanks again,
> Hal
> 
> 
> 
> > 
> > 
> > -erik
> > 
> > 
> > 
> > 
> > 
> > On Tue, Jul 2, 2013 at 12:07 PM, Hal Finkel < hfinkel at anl.gov >
> > wrote:
> > 
> > 
> > Hello everyone,
> > 
> > I've upgraded the bgclang install on vesta/mira to build
> > r185415-20130701. This build incorporates a number of important bug
> > fixes, and while hitting these bugs seems rare, I recommend that
> > all
> > codes compiled with previous builds be recompiled.
> > 
> > For those of you maintaining your own installs, I've posted the
> > updated patches and build/wrapper scripts on:
> > https://trac.alcf.anl.gov/projects/llvm-bgq
> > 
> > -Hal
> > 
> > --
> > Hal Finkel
> > Assistant Computational Scientist
> > Leadership Computing Facility
> > Argonne National Laboratory
> > _______________________________________________
> > llvm-bgq-discuss mailing list
> > llvm-bgq-discuss at lists.alcf.anl.gov
> > https://lists.alcf.anl.gov/mailman/listinfo/llvm-bgq-discuss
> > 
> > 
> > 
> > 
> > --
> > Erik Schnetter < schnetter at cct.lsu.edu >
> > http://www.perimeterinstitute.ca/personal/eschnetter/
> 
> --
> Hal Finkel
> Assistant Computational Scientist
> Leadership Computing Facility
> Argonne National Laboratory
> 
> 
> 
> 
> --
> Erik Schnetter < schnetter at cct.lsu.edu >
> http://www.perimeterinstitute.ca/personal/eschnetter/

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory