Re: [Starpu-devel] support for cudaMemcpyPeer

[Hatem Ltaief <hatem.ltaief@kaust.edu.sa>]

You are right, I have omitted the dyn libs. So, it is there but it still cannot find it:

./configure --prefix=/home/hltaief/codes/starpu/install/ --enable-cuda --disable-opencl --enable-maxcudadev=8 --without-mpicc --enable-shared

config.log says:

configure:28949: checking for cudaMemcpyPeer

configure:28949: gcc -o conftest -g -O2  -D_GNU_SOURCE  -I/usr/local/cuda/include  -L/usr/local/cuda/lib64 -lcudart -lcublas -lcuda conftest.c -lrt -lm -lpthread  >&5

/tmp/ccC7Q7DB.o: In function `main':

/home/hltaief/codes/starpu/conftest.c:114: undefined reference to `cudaMemcpyPeer'

Unless I configure it like this:

LDFLAGS=-L/usr/local/cuda/lib64 LIBS="-lcudart_static -lcudart -lcublas -lcuda -lcusparse -Wl,--no-as-needed -ldl -lrt -lm -lpthread" ./configure --prefix=/home/hltaief/codes/starpu/install/ --enable-cuda --disable-opencl --enable-maxcudadev=8 --without-mpicc

On Mar 24, 2018, at 6:32 AM, Samuel Thibault <samuel.thibault@inria.fr> wrote:

Hatem Ltaief, on sam. 24 mars 2018 13:22:54 +0000, wrote:

StarPU from git branch 1.2 does not detect cudaMemcpyPeer in cuda 9.0.

Uh?

This cuda function is defined in:
/usr/local/cuda/lib64/libcudart_static.a
000000000003f2b0 T cudaMemcpyPeer
000000000004bb70 T cudaMemcpyPeerAsync

It should be in libcudart.so too, I do have it here:
$ nm -D /cm/shared/apps/cuda90//lib64/libcudart.so.9.0 | grep MemcpyPeer
0000000000041140 T cudaMemcpyPeer
000000000004da00 T cudaMemcpyPeerAsync

Could you run that too?

Samuel

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