Charm++ parallel programming system

[Jozsef Bakosi <jbakosi AT gmail.com>]

Hi folks,

I have successfully built Charm++ using the Cray C++ compiler suite with the following build command:

$ build charm++ mpi-crayxc craycc --with-production

Now when I try to compile code that includes pup.h, which includes converse.h, which includes intrinsics.h, I get the error:

CC-311 crayc++: ERROR File = /opt/cray/pe/cce/8.5.4/CC/x86-4/compiler_include_base/basic/intrinsics.h, Line = 273

  An overload function cannot be distinguished by the return type alone.

  extern int64_t _popcnt32(uint32_t);

The section of converse.h in question is:

#if CMK_C_BUILTIN_IA32_XFENCE

#include <intrinsics.h>

#endif

If I comment out including intrinsics.h above, the particular error above goes away. This only happens on Crays and only with the Cray C++ compiler, but with all available cce modules, i.e., the intrinsics.h associated to all available cce versions. Interestingly, I cannot find an intrinsics.h system-wide on linux for example, so the non-existence of this header does not seem to be an issue, but on the two Cray machines I have tested this, the above system-wide header consistently gets picked up and fails to compile. I also wonder why this header is not picked up during building Charm++ itself.

What do you guys suggest fixing this problem?

Thanks,

Jozsef