[vsipl++] Support for parallel generator blocks

[Jules Bergmann]

Assem Salama wrote:
> Everyone,
>  This patch was submitted a while ago but didn't receive any feedback. 
> This patch has a Choose_local_block addition that switches between 
> Map_subset_block and Subset_block.

Assem,

Thanks for resending this.  I did have some feedback from the first time 
around, I apologize if you did not see it:


This looks good, however, can you extend Choose_subblock to handle 
Global_map and Replicated_map?  Both maps should be able to use a 
Subset_block.

Also, you might consider specializing Create_subblock based on the 
RetBlock type rather than Map type, since the RetBlock type is what 
governs the arguments to the constructor.  As currently written, if you 
add a new cases to Choose_subblock (say for Global_map), but forget to 
add it to Create_subblock, you'll get an error.

                 -- Jules

-- 
Jules Bergmann
CodeSourcery
jules at codesourcery.com
(650) 331-3385 x705