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File Release Notes and Changelog

Release Name: starpu-1.2.0rc2

Release Notes
StarPU 1.2.0rc2 (svn revision 15435)
==============================================

New features:
  * Anticipative writeback, to flush dirty data asynchronously before 
     the GPU device is full. Disabled by default.
     Use STARPU_MINIMUM_CLEAN_BUFFERS and 
     STARPU_TARGET_CLEAN_BUFFERS to enable it.
  * Add starpu_data_wont_use to advise that a piece of data will not
     be used in the close future.
  * Enable anticipative writeback by default.
  * New scheduler 'dmdasd' that considers priority when deciding on
    which worker to schedule

Small features:
  * Add starpu_memory_pin and starpu_memory_unpin to pin 
    memory allocated another way than starpu_malloc.