8000 CUDPP does not pass all unit tests with CUDA 10 / V100 on Linux · Issue #189 · cudpp/cudpp · GitHub
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CUDPP does not pass all unit tests with CUDA 10 / V100 on Linux #189

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alichnewsky opened this issue Jul 24, 2019 · 1 comment
Open

CUDPP does not pass all unit tests with CUDA 10 / V100 on Linux #189

alichnewsky opened this issue Jul 24, 2019 · 1 comment

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@alichnewsky
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alichnewsky commented Jul 24, 2019 •
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Most likely it did not previously with cuda 9 either.
I observed :

  • incorrect errors on multi-split tests.
    • that code has been modified in a private branch to use _shfl*sync() and __ballot_sync() intrinsics.
  • illegal memory access on stringsort tests

my fork with ongoing work can be found herehttp://github.com/alichnewsky/cudpp in two branches master andwip-cuda-9-warp-level-primitives

FULL repro

git clone -b wip-cuda-9-warp-level-primitives --recursive https://github.com/alichnewsky/cudpp 
cd cudpp
mkdir BUILD
cd BUILD
cmake .. \
-DCMAKE_CXX_COMPILER=$(which g++) \
-DCMAKE_CXX_FLAGS=-Wno-deprecated-declarations \
-DCUDPP_GENCODE_SM70=ON \
-DCUDPP_GENCODE_SM60=OFF \
-DCUDPP_GENCODE_SM70=ON \
-DCUDPP_GENCODE_SM50=OFF \
-DCUDPP_GENCODE_SM37=OFF \
-DCUDPP_GENCODE_SM35=OFF \
-DCUDPP_GENCODE_SM30=OFF \
-DCUDA_VERBOSE_PTXAS=OFF \
-DCUDPP_GENCODE_SM60_COMPATIBILITY_MODE=OFF \
-DCUDPP_BUILD_APPLICATIONS=ON \
-DCUDPP_BUILD_SHARED_LIBS=ON 

# build
make -j $(nproc)

# execute all unit tests fails
bin/cudpp_testrig -all 2>&1 | tee test.all

# execute muti-split test fails
bin/cudpp_testrig -multisplit 2>&1 | tee test.multi-split

As the portion of the code I use in my application ( compute integrals with scan, multi-scan for floating points sums ) actually works, I may not investigate this in a timely fashion and contribute a fix ...

a free CI/CD like the one (NVIDIA provides?) for RAPIDS would be nice.
@alichnewsky
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logs for

# execute all unit tests fails
bin/cudpp_testrig -all -quiet 2>&1 | tee cudpp_testrig-all-quiet.txt

cudpp_testrig-all-quiet.txt

multiSplitKeyValueTest fails for a variety of elements / bucket counts
and then test are interrupted after

.../apps/cudpp_testrig/test_stringsort.cpp' in line 287 : an illegal memory access was encountered.

@alichnewsky alichnewsky mentioned this issue Jul 24, 2019
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