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Compute block size and rank info for use with a block distribution. 
- Parameters
- 
  
    | [in] | rank_id | id of local rank (ignored in serial mode) |  | [in] | n_ranks | number of associated ranks |  | [in] | min_rank_step | minimum rank step between blocks |  | [in] | min_block_size | minimum number of entities per block |  | [in] | n_g_ents | total number of associated entities |  
 
- Returns
- block size and range info structure 
 
 
Compute block size and rank info for use with a block distribution for a new global number of entities with a given number of active ranks. 
- Parameters
- 
  
    | [in] | rank_id | id of local rank (ignored in serial mode) |  | [in] | n_ranks | number of associated ranks |  | [in] | n_block_ranks | number of ranks associated with a block |  | [in] | n_g_ents | total number of associated entities |  
 
- Returns
- block size and range info structure