User`s guide

R2007a
20-14
Multithreaded Computation Support Added; Enable Via New Preference
If you run MATLAB on a multiple-CPU system (multiprocessor or multicore), use a
new preference to enable multithreaded computation. This can increase performance in
MATLAB for element-wise and BLAS library computations.
By default the preference is not set, so you must set it to enable multithreaded
computation. With the preference enabled, MATLAB automatically specifies the
recommended number of computational threads, although you can change that value. On
AMD platforms running the Linux operating system, MATLAB supports multithreaded
computation, but requires an extra step to change the default BLAS.
If you are using a multiple-CPU system, you can run the Multithreaded Computation
demo to see the performance impact. For more information, see “Enabling Multithreaded
Computation” in the MATLAB Desktop documentation.
Running Functions—Command Window and History
New features and changes introduced in Version 7.4 (R2007a) are
• “Startup Message Bar Replaces Startup Message in Command Window” on page
20-14
• “Command History Searching Enhanced” on page 20-14
• “Macintosh Platforms—Some Key Bindings in Command Window Changed” on page
20-15
Startup Message Bar Replaces Startup Message in Command Window
When you start MATLAB, a getting started message bar appears at the top of the
Command Window, that provides links to information that is helpful for new users.
You can dismiss the message bar by using the close box in it. Use Command Window
preferences to specify whether or not the message bar should appear.
Command History Searching Enhanced
You can now find entries in the Command History window by typing the first few letters
of an entry; the previous entry that begins with those letters is selected. Then use up and
down arrow keys to extend the find to the next and previous instances. Use the Ctrl key
with an arrow key to select the current as well as next or previous instances. Use Ctrl+A
to find and highlight all instances at once. The search does not look at entries in sessions
that are collapsed. For more information about this search feature, see Quick Search for
Entries Beginning with Specified Letters or Numbers.