On 10/28/2016 10:33 AM, Craig tierney wrote:
Sylvain,
If I do not set --with-cuda, I get:
configure:9964: result: no
configure:10023: checking whether CU_POINTER_ATTRIBUTE_SYNC_MEMOPS is
declared
configure:10023: gcc -c -DNDEBUG conftest.c >&5
conftest.c:83:19: fatal error: /cuda.h: No such file or directory
#include </cuda.h>
^
It looks like your environment has variables that the configure tries to
use. You should look the output of :
env | grep CUDA
and unset them.
Or you can specify --with-cuda=/usr/local/cuda to be sure.
If I specify the path to cuda, the same results as before. In the
configure process, the first time cuda.h is tested it works.
configure:9843: checking if --with-cuda is set
configure:9897: result: found (/usr/local/cuda/include/cuda.h)
configure:9964: checking for struct CUipcMemHandle_st.reserved
Good.
But the next time the compile command doesn't add an include to the
compile line and the compile fails:
configure:74312: checking for CL/cl_ext.h
configure:74312: result: no
configure:74425: checking cuda.h usability
configure:74425: gcc -std=gnu99 -c -O3 -DNDEBUG conftest.c >&5
conftest.c:648:18: fatal error: cuda.h: No such file or directory
#include <cuda.h>
^
compilation terminated.
configure:74425: $? = 1
Is the Open MPI configure explicitely failing ? If not, is the Open MPI
compilation failing ? If it works, you should see CUDA support has been
compiled in (in ompi_info).
It seems you are fooled by the hwloc configure here : the hwloc
configure includes checks for CUDA but we don't need them in Open MPI so
they are failing, but you still get CUDA support.
In the latest version of Open MPI, there should be a report at the end
of configure explicitely stating if CUDA support has been enabled or not.
Sylvain
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