Intel PCM APIs Question

Spivoler — Mon, 07 Dec 2015 10:00:13 GMT

Hi,

I am a new user of Intel PCM tool. When I was trying to use PCM APIs in my c++ application, I kinda stuck at the very beginning. I think the error might be caused by failing of linking libraries or including headers. But I just followed the example given by PCM articles... Here is what I did and got...

I just faked a very simple example (test.cc):

#include "cpucounters.h"

void main(){
  PCM * m = PCM::getInstance();
  PCM::ErrorCode returnResult = m->program();
  if (returnResult != PCM::Success){
     std::cerr << "Intel's PCM couldn't start" << std::endl;
     std::cerr << "Error code: " << returnResult << std::endl;
     exit(1);
  }

  SystemCounterState before_sstate = getSystemCounterState();

  SystemCounterState after_sstate = getSystemCounterState();

  std::cout << "Instructions per clock:" << getIPC(before_sstate,after_sstate) << std::endl;
  std::cout << "Bytes read:" << getBytesReadFromMC(before_sstate,after_sstate) <cleanup();
}

Then I did the compilation work by:

g++ -I. cpucounters.o msr.o pci.o test.cc

Since I put the file test.cc in the root directory of PCM, I did not put any prefix before object files. When I compile, I got errors as below:

In file included from cpucounters.h:34,
                 from test.cc:1:
msr.h:67: error: ISO C++ forbids declaration of ‘shared_ptr’ with no type
msr.h:67: error: invalid use of ‘::’
msr.h:67: error: expected ‘;’ before ‘<’ token
msr.h: In constructor ‘SafeMsrHandle::SafeMsrHandle(uint32)’:
msr.h:76: error: class ‘SafeMsrHandle’ does not have any field named ‘pHandle’
msr.h: In member function ‘int32 SafeMsrHandle::read(uint64, uint64*)’:
msr.h:82: error: ‘pHandle’ was not declared in this scope
msr.h: In member function ‘int32 SafeMsrHandle::write(uint64, uint64)’:
msr.h:92: error: ‘pHandle’ was not declared in this scope
msr.h: In member function ‘int32 SafeMsrHandle::getCoreId()’:
msr.h:99: error: ‘pHandle’ was not declared in this scope
In file included from cpucounters.h:37,
                 from test.cc:1:
width_extender.h: At global scope:
width_extender.h:54: error: ISO C++ forbids declaration of ‘shared_ptr’ with no type
width_extender.h:54: error: invalid use of ‘::’
width_extender.h:54: error: expected ‘;’ before ‘<’ token
width_extender.h:56: error: expected ‘)’ before ‘<’ token
width_extender.h:67: error: ISO C++ forbids declaration of ‘shared_ptr’ with no type
width_extender.h:67: error: invalid use of ‘::’
.......

Can anyone help me with this? Thanks.

Hi,

Roman_D_Intel — Mon, 07 Dec 2015 12:37:36 GMT

Hi,

the latest version of PCM also needs -std=c++0x option. For all other options you can consult the PCM Makefile.

Thanks,

Roman

Quote:Roman Dementiev (Intel)

Spivoler — Thu, 10 Dec 2015 21:51:23 GMT

Roman Dementiev (Intel) wrote:

Hi,

the latest version of PCM also needs -std=c++0x option. For all other options you can consult the PCM Makefile.

Thanks,

Roman

Thanks, Roman. I will try that out and other details in Makefile.

topic Hi, in Software Tuning, Performance Optimization & Platform Monitoring

Intel PCM APIs Question

Hi,

Quote:Roman Dementiev (Intel)