> For the complete documentation index, see [llms.txt](https://docs.trycortex.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.trycortex.ai/callable/blocks/control/map-reduce.md).

# Map Reduce

Map over an array and executes a sequence of blocks in parallel.

<figure><img src="/files/Bvh6bjvZl45EKMo7qy6O" alt=""><figcaption></figcaption></figure>

**Parameters:**

* **From:** Reference of a block name that outputs an array
* **Repeat:** Integer value that specifies the amount of time to repeat the execution of blocks inside the loop