topic Building IPP dependent code with PGOPTI instrumentation in Intel® Integrated Performance Primitives

Building IPP dependent code with PGOPTI instrumentation

Hugo_P_ — Wed, 28 Dec 2016 15:03:09 GMT

Hello,

I'm trying to build some code I've "inherited", that depends on IPP, with PGOPTI instrumentation for code coverage.

While doing so I'm running into linking issues such as:

/home/src/sdk/intel/IPP/lib/linux64/libippi.a(pimorphologyca_y8---ippiDilate_8u_C1R.o): In function `y8_ippiDilate_8u_C1R':

pimorphologyca_y8---ippiDilate_8u_C1R.i:(.text+0x15c): undefined reference to `y8_ippsMalloc_64s'
pimorphologyca_y8---ippiDilate_8u_C1R.i:(.text+0x2c3): undefined reference to `y8_ippsFree'

My guess is that the disabling of automatic CPU specialization is interfering with CPU dispatching in IPP libraries, but I've been unable to work around this.

Is this not possible to do and do I need to explicitly disable instrumentation on the components that link with IPP libraries?

Could anyone provide some assistance?

Thanks,

Hugo

Hi Hugo,

Sergey_K_Intel — Thu, 29 Dec 2016 05:27:11 GMT

Hi Hugo,

Is your command line for linker correct? I mean, does it contain all required IPP libraries? In other words, is linking without PGOPTI ok?

Regards,

Sergey

Right, ippiDilate may depend

Ying_H_Intel — Thu, 29 Dec 2016 06:52:43 GMT

Right, ippiDilate may depend on ippi.a ipps.a [ippvm.a] ippcore.a (in order).

Best Regards,

Ying

Hello Sergey,

Hugo_P_ — Thu, 29 Dec 2016 11:28:15 GMT

Hello Sergey,

Yes, I forgot to mention, but linking without PGOPTI is fine.

Hi Ying,

The linker command doesn't depend on PGOPTI instrumentation and includes the mentioned static libraries. Explicitly these and in this order:

-lippcc -lippvc -lippi -lipps -lippvm -lippcore

Interestingly though, later on the linker command, some of these libraries appear again, like this:

-lippvc -lippi

Note, no reference to ipps or ippcore at that point.

I found this strange. It looks like another library that is in the component's CMakeLists.txt list of target_link_libraries has ippvc and ippi as dependencies. Adding ipps and ippcore to that solves the linking issue.

Why it linked fine without PGOPTI I don't know.

Thanks,

Hugo