[Openmp-dev] New OpenMP runtime release

[Steven Noonan]

On Mon, Dec 23, 2013 at 05:36:04PM +0000, Cownie, James H wrote:
> For your Christmas hacking pleasure.
> 
> This release aligns with Intel(r) Composer XE 2013 SP1 Product Update 2 
> 
> New features
> * The library can now be built with clang (though with some
>   limitations since clang does not support 128 bit floats, so the library built with 
>   clang cannot be used with a different compiler that does have such support.)
> * Support for Vtune analysis of load imbalance
> * Code contribution from Steven Noonan to build the runtime for ARM*
>   architecture processors 

Cool. Thanks, Jim!

It looks like there's still a minor correction that needs to happen. I
didn't get an opportunity to test the merged changes until they went
public, and there's actually a compile error in there now:

	../../src/z_Linux_asm.s: Assembler messages:
	../../src/z_Linux_asm.s:1590: Error: junk at end of line, first unrecognized character is `,'

With a quick bit of Googling, I found this:

    http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=422971

In that bug report's comments, Daniel Jacobowitz clarifies that '@' is
an ARM comment marker, so using '%' is the preferred annotation. I've
compile and run-tested this on both x86_64 and ARM, and both work at
this point:

diff --git a/runtime/src/z_Linux_asm.s b/runtime/src/z_Linux_asm.s
index 1f1ba1b..bba3b14 100644
--- a/runtime/src/z_Linux_asm.s
+++ b/runtime/src/z_Linux_asm.s
@@ -1587,5 +1587,5 @@ __kmp_unnamed_critical_addr:


 #if defined(__linux__)
-.section .note.GNU-stack,"", at progbits
+.section .note.GNU-stack,"",%progbits
 #endif

Now to conquer the build issues on Mac OS X...

> * First implementation of runtime API for OpenMP cancellation
> 
> Bug Fixes
> * Fixed hang on Windows (only) when using KMP_BLOCKTIME=0
> 
> -- Jim
> 
> James Cownie <james.h.cownie at intel.com>
> SSG/DPD/TCAR (Technical Computing, Analyzers and Runtimes)
> Tel: +44 117 9071438
> 
> 
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