Install error: [nvcc fatal : Value 'gnu++0x' is not defined for option 'std'] about nccl

[LitLeo]

Hi， I have solved this problem.
I successfully installed NCCL on Ubuntu 14.04. I debugged the Makefile and found the $CXX is different in Ubuntu 14.04 and Centos
In Ubuntu 14.04, $CXX=g++, in Centos $CXX=g++ std=gnu++0x.
So I run
export CXX=g++
It works.

[sjeaugey]

According to https://access.redhat.com/solutions/19458 the GCC version in RHEL 6.6 is GCC 4.4. You need to use GCC 4.8 to compile NCCL. Compiling GCC 4.8.2 on RHEL 6.6 should be rather straightforward.

[dvector89]

@sjeaugey Thanks for your reply.
The version of gcc seems to be 4.4.7：

[@ppk_02 nccl-1.2.3-1-cuda7.5]$ gcc --version
gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-11)
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[@ppk_02 nccl-1.2.3-1-cuda7.5]$ g++ --version
g++ (GCC) 4.4.7 20120313 (Red Hat 4.4.7-11)
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Do I need to change the version to 4.82?

[dvector89]

After installed GCC 4.9.2, I get the same error when I compile the NCCL. (I did not compile the GCC 4.8.2 successfully)

[LitLeo]

I also encountered the same problem. How did you solve the problem?
Thanks very much.