[Pw_forum] QE-GPU "configure" question

[Christopher O'Grady]

Hi,

I've been meaning to do this for a while, but I'm finally trying to
install QE-GPU.  We run GPAW-GPU on our cluster of 119 M2090 GPUs, so I
have some experience with the devices.

I downloaded QE-GPU-5.0.2-build2.tar.gz.

When I do:

./configure --disable-parallel --enable-openmp --enable-cuda
--with-gpu-arch=20 --with-cuda-dir=/opt/cuda-4.2 --enable-magma
--enable-phigemm

I receive:

in /opt/cuda-4.2/lib64: checking for library containing cudaGetDeviceCount... -lcudart
in /opt/cuda-4.2/lib64: checking for library containing cublasInit... no
in /opt/cuda-4.2/lib64: checking for library containing cufftPlan1d... no
in /usr/lib64/nvidia: checking for library containing cudaGetDeviceCount... no
in /usr/lib64/nvidia: checking for library containing cublasInit... no
in /usr/lib64/nvidia: checking for library containing cufftPlan1d... no
in /usr/local/cuda/lib64: checking for library containing cudaGetDeviceCount... no
in /usr/local/cuda/lib64: checking for library containing cublasInit... no
in /usr/local/cuda/lib64: checking for library containing cufftPlan1d... no

Looking in install/config.log I see (just looking at the first two lines above):

configure:9255: icc -o conftest -O3  -L/opt/cuda-4.2/lib64 conftest.c -lcudart   >&5
configure:9255: $? = 0
configure:9272: result: -lcudart
configure:9283: checking for library containing cublasInit
configure:9322: icc -o conftest -O3  -L/opt/cuda-4.2/lib64 conftest.c  >&5
/tmp/iccIh2sBB.o: In function `main':
conftest.c:(.text+0x2b): undefined reference to `cublasInit'
configure:9322: $? = 1

It looks like the "-lcublas" is missing from the compilation line, although
"-lcudart" was correctly there in the previous step.  I believe my cuda
installation is good because we run GPU calculations all the time.
We are running RHEL6.  libcublas.so exists:

cpo at suncatgpu25 $ ls -rtlL /opt/cuda-4.2/lib64/libcublas.so
-rwxr-xr-x 1 root bin 108994128 Jun  4 17:10 /opt/cuda-4.2/lib64/libcublas.so

I feel like I'm missing something silly.  If someone had some quick
suggestions I'd be grateful.

Thanks for any advice,

chris