Forwarding to hpx-users...
On 9/1/2017 8:00 AM, luca de silvestris wrote:
VERSION: HPX1.0
ON: LINUX UBUNTU 16.04
I USE: C-LION 2017.2.1
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff4366700 (LWP 4189)]
[New Thread 0x7ffff3b65700 (LWP 4190)]
[New Thread 0x7ffff3364700 (LWP 4191)]
[New Thread 0x7ffff2b63700 (LWP 4192)]
[New Thread 0x7ffff2362700 (LWP 4193)]
[New Thread 0x7ffff1b61700 (LWP 4194)]
[New Thread 0x7ffff1360700 (LWP 4195)]
[New Thread 0x7ffff095e700 (LWP 4196)]
Thread 8 "fibonacci_paral" received signal SIGABRT, Aborted.
[Switching to Thread 0x7ffff1360700 (LWP 4195)]
0x00007ffff5c6e428 in raise () from /lib/x86_64-linux-gnu/libc.so.6
2017-08-30 15:34 GMT+02:00 Adrian Serio <[email protected]
<mailto:[email protected]>>:
Luca,
I am forwarding you email to the hpx-users list. We handle user
requests and questions there.
Can you post the debug into that comes with the Seg. Fault? We
need to know things such as the version of HPX and the platform
you are running on.
Adrian
On 8/29/2017 9:09 AM, luca de silvestris wrote:
dear stellar group,
i'm a student and i try to use your library Hpx, but i have a
problem.
i try to run one of your examples (Fibonacci), and the program
run with no problem
but there isn't the output.
this is the code:
///////////////////////////////////////////////////////////////////////////////
//[fib_action // forward declaration of the Fibonacci function
std::uint64_t fibonacci(std::uint64_t n);
// This is to generate the required boilerplate we need for the
remote // invocation to work. HPX_PLAIN_ACTION(fibonacci, fibonacci_action);
//]
///////////////////////////////////////////////////////////////////////////////
//[fib_func std::uint64_t fibonacci(std::uint64_t n)
{
if (n <2)
return n;
// We restrict ourselves to execute the Fibonacci function
locally. hpx::naming::id_type const locality_id =hpx::find_here();
// Invoking the Fibonacci algorithm twice is inefficient. //
However, we intentionally demonstrate it this way to create some
// heavy workload. fibonacci_action fib;
hpx::future<std::uint64_t> n1 =
hpx::async(fib, locality_id, n -1);
hpx::future<std::uint64_t> n2 =
hpx::async(fib, locality_id, n -2);
return n1.get() + n2.get();// wait for the Futures to return their
values }
//]
///////////////////////////////////////////////////////////////////////////////
//[fib_hpx_main int hpx_main(boost::program_options::variables_map& vm)
{
// extract command line argument, i.e. fib(N) std::uint64_t n =
vm["n-value"].as<std::uint64_t>();
{
// Keep track of the time required to execute.
hpx::util::high_resolution_timer t;
// Wait for fib() to return the value fibonacci_action fib;
std::uint64_t r = fib(hpx::find_here(), n);
char const* fmt ="fibonacci(%1%) == %2%\nelapsed time: %3% [s]\n";
std::cout<< (boost::format(fmt)% n % r % t.elapsed());
}
return hpx::finalize();// Handles HPX shutdown }
//]
///////////////////////////////////////////////////////////////////////////////
//[fib_main int main(int argc,char* argv[])
{
// Configure application-specific options boost::program_options::options_description
desc_commandline("Usage: " HPX_APPLICATION_STRING " [options]");
desc_commandline.add_options()
( "n-value",
boost::program_options::value<std::uint64_t>()->default_value(10),
"n value for the Fibonacci function") ;
// Initialize and run HPX return hpx::init(desc_commandline, argc,
argv);
}
AND THIS IS THE GDB: Type "apropos word" to search for commands
related to "word". [Thread debugging using libthread_db enabled]
Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread
0x7ffff4366700 (LWP 6134)] [New Thread 0x7ffff3b65700 (LWP 6135)]
Thread 1 "fibonacci_paral" received signal SIGABRT, Aborted.
0x00007ffff5c6e428 in raise () from /lib/x86_64-linux-gnu/libc.so.6
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Adrian Serio
Scientific Program Coordinator
2118 Digital Media Center
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Adrian Serio
Scientific Program Coordinator
2118 Digital Media Center
225.578.8506
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