nvcc + std::chrono problem

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi,
I try to compile some C++ code with nvcc. Unfortunately I get following error:
/usr/local/include/boost/fiber/context.hpp:190:44: error: »tp_std« was not declared
std::chrono::steady_clock::time_point tp_{ (std::chrono::steady_clock::time_point::max)() };

compiled with:
/opt/cuda/bin/nvcc -ccbin g++ -I/opt/cuda/include -I/usr/local/include -I/usr/include -m64 -std=c++11 --expt-relaxed-constexpr -Xcompiler -O2 -Xcompiler -W -Xcompiler -Wall -gencode arch=compute_61,code=compute_61 -o simple.o -c simple.cu

Is nvcc unable to handle std::chrono library?

I’m using nvcc release V9.0.176, gcc 7.2.0 on x86_64.

ty,
Oliver

2

gcc 7.2 is not a supported host compiler for nvcc on CUDA 9:

http://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#system-requirements

I didn’t have any trouble compiling this in CUDA 9 with gcc 4.8.4 (Ubuntu 14.04):

$ cat t450.cu
#include <chrono>

int main(int argc, char ** argv)
{
std::chrono::steady_clock::time_point tp_{ (std::chrono::steady_clock::time_point::max)() };
}

$ nvcc -std=c++11 t450.cu -o t450
t450.cu(5): warning: variable "tp_" was declared but never referenced

t450.cu(5): warning: variable "tp_" was declared but never referenced

$
3

Indeed your example works for me too.

It’s strange that including a header from a C++ library (that can be successfully compiled by gcc; without problems) generates the error I mentioned above (»tp_std« was not declared).

Maybe some compiler arguments are missing in my command line?

4

nvcc does not handle in-class member initializers correctly:

#include <chrono>

struct foo {
    std::chrono::steady_clock::time_point tp_{ (std::chrono::steady_clock::time_point::max)() };
};
            
int main() { 
    return 0;
}

generates error:

error: »tp_std« was not declared
std::chrono::steady_clock::time_point tp_{ (std::chrono::steady_clock::time_point::max)() };

5

nvcc has some problems with parsing…
while the exampel above fails, following code compiles:

#include <chrono>

std::chrono::steady_clock::time_point bar() {
    return (std::chrono::steady_clock::time_point::max)();
}

struct foo {
    std::chrono::steady_clock::time_point tp_{ bar() };
};

int main() {
    return 0;
}