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