Compiling grappa with icpc

[alexfrolov]

Hi, guys!
I want to have some experiments with Grappa. I'm trying to build grappa with icpc from composer_xe_2015.5.223 and it doesnt work.

...

/mnt/lustre/home/frolo/grappa.master/system/common.hpp(56): error: namespace "std" has no member "unique_ptr"
  std::unique_ptr<T> make_unique(Args&&... args) {
       ^

In file included from /mnt/lustre/home/frolo/grappa.master/system/Aggregator.hpp(53),
                 from /mnt/lustre/home/frolo/grappa.master/system/Aggregator.cpp(37):
/mnt/lustre/home/frolo/grappa.master/system/common.hpp(61): warning #12: parsing restarts here after previous syntax error
  using std::nullptr_t;
                      ^

In file included from /mnt/lustre/home/frolo/grappa.master/system/Aggregator.hpp(55),
                 from /mnt/lustre/home/frolo/grappa.master/system/Aggregator.cpp(37):
/mnt/lustre/home/frolo/grappa.master/system/Communicator.hpp(130): error: qualified name is not allowed
    std::unique_ptr< Locale[] > locale_of_core_;
    ^
...

It seems that Intel C++ compiler does not fully support C++11, which is strange. Is Grappa compatible with Intel C++ compilers?

Best,
Alex

p.s. It's good to have an opportunity to play with Grappa again :-)

[bholt]

Are you sure it's not the standard library you're using that's out of date? Try compiling something that uses C++11 features but doesn't require the new stdlib, like a lambda. It looks to me like Intel's compiler just uses whatever stdlib it finds on your system, so it's probably picking up an out-of-date one.

[nelsonje]

Welcome back!

I'm afraid we only support GCC and LLVM/Clang right now. Part of the reason is to avoid other compilers' different interpretations of the C++11 spec, and part of it is that we use some GCC-specific directives in the code. I did try a couple hacks to get Grappa to compile with icpc earlier this year, but the binary I built immediately crashed in the threading layer for reasons that were unclear, and so I never committed the changes.

I'm sure the problems can all be fixed, but it will probably take some work.

The errors you're seeing do seem a little odd, and not like the errors I saw previously. Perhaps some flags we're passing to the compiler are confusing it?

[alexfrolov]

It seems that unique_ptr is still not supported by intel c++ compiler. Okay, Intel.

[jeffhammond]

@nelsonje @alexfrolov Can either of you try Intel 16? They've been out for a while now I think.

@nelsonje If you do not have access to Intel 16, write me an email and I'll give you a license for your troubles, assuming you're willing to revisit this.

@nelsonje What GCC-specific directives are you using? Are they essential or can we try to find either Intel or ISO equivalents?

[jeffhammond]

Update: I have no problem compiler Grappa with Intel 16, but most of the tests fail (#255).