Example compiles and runs with C++ 2021.7.0 and aborts with DPC++ 2022.2.0

[Ian_Chivers]

I have a couple of C++ 11 <array> examples that compile and run successfully with the Intel classic C++ compiler (2021.7.0) on Windows, and compile and terminate without generating any output using DPC++  2022.2.0.

Has anyone else had problems moving their C++ code to use the new DPC++ compiler with the <array> class?

I can't attach all of the source files, I get the following error

The attachment's ch3802.cpp content type (text/plain) does not match its file extension and has been removed.

[MWind2]

I tried the print_time.cpp with no problems, and re-reading post I realize I need the array use?

[Ian_Chivers]

Apologies for the incomplete post. It looks like a stack problem on Windows. This is the classic compile command.

icl /EHsc /nologo /F0xffffffff /O2 /Qstd=c++20 ch3802.cxx -o ch3802_intel_classic.exe

and this generates an executable that runs.

Here is the output.

C:\document\cpp\examples>ch3802_intel_classic.exe
Program starts : 0.000002

C++ 11 <array>

134217728
1073741824 bytes
Random numbers : 0.781101
STL sort - <array> : 13.513962
Total time : 14.298434

Here is the dp c++ compiler command line, with messages.

C:\document\cpp\examples>icx /EHsc /nologo /F 0xffffffff /O2 /Qstd=c++20 ch3802.cxx -o ch3802_intel_new.exe
icx: warning: argument unused during compilation: '-F 0xffffffff' [-Wunused-command-line-argument]

C:\document\cpp\examples>ch3802_intel_new.exe

No output or error message.

Here are the required files. I can't attach them.

timer.cpp

#######

#include <chrono>

using namespace std;

class timer
{
public:
timer() : start_timing(hi_res_clock::now()) {}
void reset()
{
start_timing = hi_res_clock::now();
}
double elapsed() const
{
return(std::chrono::duration_cast<second_>
(hi_res_clock::now() - start_timing).count());
}
private:
typedef std::chrono::high_resolution_clock hi_res_clock;
typedef std::chrono::duration<double, std::ratio<1> >
second_;
std::chrono::time_point<hi_res_clock> start_timing;
};

Main driving program

#################

#include <iostream>
#include <algorithm>
#include <array>
#include <random>
#include <string>
#include <chrono>

using namespace std;

#include "timer.cxx"
#include "print_time.cxx"

// #include "swap.cxx"
// #include "quicksort.cxx"
// #include "print_10.cxx"

int main()
{
unsigned seed = std::chrono::system_clock::now().time_since_epoch().count();
default_random_engine engine_01(seed);
uniform_real_distribution<double> distribution_01(0.0, 1.0);

string heading;
double t;
timer timer_01;
timer timer_02;

heading = "Program starts";
t = timer_01.elapsed();
print_time(heading, t);
timer_01.reset();

// Size

const int mega_byte = 1024 * 1024;
const int array_size = 128 * mega_byte;

int i;

array<double, array_size> x;

cout << "\n C++ 11 <array> \n" << endl;

cout.width(16);
cout << array_size << endl;
cout.width(16);
cout << (array_size * 8);
cout << " bytes " << endl;

for (i = 0; i < array_size; i++)
x[i] = distribution_01(engine_01);

heading = "Random numbers";

t = timer_01.elapsed();
print_time(heading, t);
timer_01.reset();

sort(x.begin(), x.end());

heading = "STL sort - <array> ";

t = timer_01.elapsed();
print_time(heading, t);
timer_01.reset();

heading = "Total time";
t = timer_02.elapsed();
print_time(heading, t);

return(0);

}

############################

The print_time source file is in the original post.

I am in the process of trying to find any compiler switches

that will set the stack size under windows.

[Ian_Chivers]

Apologies for 'claiming' the solution. I can't find a way to undo that.

[SantoshY_Intel]

Hi,

Thanks for posting in the Intel forums.

We were able to reproduce the issue from our end. The issue is with the hexadecimal value being used with the /F option. The use of the hexadecimal value is not being parsed. You can try passing the equivalent integer value which would work fine.

Example:

icx /nologo /O2 main.cpp -o main_icx.exe /F4294967295

Output:

workaround to pass hexadecimal values:

We can use the option: /link -stack:0xffffffff

Example:

icx /nologo /O2 main.cpp -o main_icx.exe /link -stack:0xffffffff

output:

If this resolves your issue, make sure to accept this as a solution. This would help others with similar issues. Thank you! 

Thanks & Regards,

Santosh

[Ian_Chivers · Accepted solution]

Thanks very much this resolves the issue. 

[SantoshY_Intel]

Hi,

Thanks for accepting our solution. If you need any additional information, please post a new question as this thread will no longer be monitored by Intel. 

Thanks & Regards,

Santosh