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While Blitz++ can be used for parallel computing, it was not designed primarily for this purpose. For this reason, you may want to investigate some other available libraries, such as POOMA, before choosing to implement a parallel code using Blitz++.
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To enable thread-safety in Blitz++, you need to do one of these things:
gcc -pthread
, or CC -mt
under Solaris.
(These options define _REENTRANT
, which tells Blitz++ to generate
thread-safe code).
-DBZ_THREADSAFE
, or #define BZ_THREADSAFE
before including any Blitz++ headers.
In threadsafe mode, Blitz++ array reference counts are safeguarded by a
mutex. By default, pthread mutexes are used. If you would prefer a
different mutex implementation, add the appropriate BZ_MUTEX
macros
to <blitz/blitz.h>
and send them to blitz-dev@oonumerics.org
for incorporation.
Blitz++ does not do locking for every array element access; this would result in terrible performance. It is the job of the library user to ensure that appropriate synchronization is used.
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