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OpenMP 3.1 has been released
By
Archive User
posted
Fri September 02, 2011 10:03 AM
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Originally posted by:
Michael_Wong
After almost two years of work, OpenMP 3.1 has been released. Here is the
announcement
on it and the
new specification
in pdf online.
As I mentioned in the previous note on the
public comment draft
, and in this
trip report
and
Steven Perron's posting
about the new content, 3.1 offers something for everyone.
The main purpose of OpenMP 3.1 was to redefine and extend existing specification, and maintain backward compatibility. This was also a bug-fix release in that it clarified a number of examples in OpenMP 3.0 and fixed about 20 minor defects in the 3.0 specification.
The main features were
improve efficiency for fine grain parallelism for tasks by adding the final and mergeable clause for tasks
starting support for affinity through threading binding and controlling the number of threads on multiple nesting levels
enhance atomics extensions for read, write and capture
fix memory model inconsistencies
new taskyield construct
allow Fortran pointers in firstprivate and lastprivate clause
change the firstprivate clause restrictions to allow intent(in) and const objects in the clause
I will follow with more detailed description of some of these features in a special series.
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