Coarray vs optimization

Intel® Fortran Compiler

Build applications that can scale for the future with optimized code designed for Intel® Xeon® and compatible processors.

Coarray vs optimization

336 Views

Hallo,

I am tring to add coarray into my old code.

IF (this_image() == 1) THEN

! Run old bigger code here

! Try to change some computing into coarray

END IF

compiler option:

/nologo /debug:full /Od /Qcoarray:shared /warn:interfaces /module:"x64\Debug\\" /object:"x64\Debug\\" /traceback /check:bounds /check:stack /libs:dll /threads /dbglibs /c

The executing time is 3 to 4 times more when using coarray than using optimization with option /o2. I think all threads are used in option /Qcoarray:shared, and extra optimization could not work.

How should I use optimization in the most of the place, and use the coarray in the place which I wanted, as MPI?

Regards

Link Copied

0 Replies

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.