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Version: 1.0
For the complete Mojo documentation index, see llms.txt. Markdown versions of all pages are available by appending .md to any URL (e.g. /docs/manual/basics.md).

warp_id

warp_id[*, broadcast: Bool = False]() -> Int

Returns the warp ID of the current thread within its block. The warp ID is a unique identifier for each warp within a block, ranging from 0 to BLOCK_SIZE/WARP_SIZE-1. This ID is commonly used for warp-level programming and synchronization within a block.

Parameters:

  • ​broadcast (Bool): If true, broadcasts the warp ID to all threads in the warp, ensuring that all threads in the same warp have the same value. This can be useful for certain warp-level algorithms.

Returns:

Int: The warp ID (0 to BLOCK_SIZE/WARP_SIZE-1) of the current thread.