[petsc-dev] 4.2 and PETSc

[Daniel Lowell]

Hi all,


Has anyone run into any problems with NVCC 4.1 or .42 on PETSc with
arch=sm_20?
I have having real issues with it. I keep getting this:

#$ cicc  -arch compute_20 -m64 -ftz=0 -prec_div=1 -prec_sqrt=1 -fmad=1 -g
-O0 "/tmp/tmpxft_00000b8b_00000000-10_vecgpu"
"/tmp/tmpxft_00000b8b_00000000-7_vecgpu.cpp3.i"  -o
"/tmp/tmpxft_00000b8b_00000000-2_vecgpu.ptx"
<built-in>(2): error: "__STDC_HOSTED__" is predefined; attempted
redefinition ignored

<built-in>(8): error: "__WCHAR_TYPE__" is predefined; attempted
redefinition ignored

<built-in>(115): error: "__x86_64" is predefined; attempted redefinition
ignored

<built-in>(116): error: "__x86_64__" is predefined; attempted redefinition
ignored

<built-in>(126): error: "__linux__" is predefined; attempted redefinition
ignored

<built-in>(128): error: "__unix__" is predefined; attempted redefinition
ignored

6 errors detected in the compilation of
"/tmp/tmpxft_00000b8b_00000000-7_vecgpu.cpp3.i".
# --error 0x1 --


4.0 works fine, no issues.
4.0 version uses the older nvopencc, in 4.1 and 4.2 they use something
called cicc, for target architecture sm_2x. Of course it does no mention
cicc in the updated nvcc documentation at all.

Tried 4.2 with GCC 4.3 and 4.4 without any difference in behavior.


PETSc configuration script:

MPI_DIR="--with-mpi-dir=$MPICH2_HOME"
LAD="--download-f-blas-lapack=yes"
CUD="--with-cuda-dir=/soft/cuda-4.2/cuda"
./config/configure.py $MPI_DIR $LAD $CUD \
--with-debugging=1 \
--with-cudac="nvcc -m64 -g -G" \
--with-precision=double \
--with-clanguage=c \
--with-cuda-arch=sm_20




-- 
Daniel Lowell
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