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SWIFT
SWIFTsim
Commits
6c9d0947
Commit
6c9d0947
authored
Jan 27, 2016
by
James Willis
Browse files
Changed the cell_max_tag to 2^29 to prevent MPI tag collisions.
parent
62727f47
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src/cell.h
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6c9d0947
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@@ -29,7 +29,12 @@ struct space;
/* Some constants. */
#define cell_sid_dt 13
#define cell_max_tag (1 << 16)
/* Max tag size set to 2^29 to take into account some MPI implementations
* that use 2^31 as the upper bound on MPI tags and the fact that
* cell_next_tag is multiplied by 2 when passed to an MPI function.
* The maximum was lowered by a further factor of 2 to be on the safe side.*/
#define cell_max_tag (1 << 29)
/* Global variables. */
extern
int
cell_next_tag
;
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