# When using dask, is "loadbalance spillback" still best practice?

**URL:** <https://discuss.ray.io/t/when-using-dask-is-loadbalance-spillback-still-best-practice/2281>\
**Category:** Ray Core\
**Created:** [May 24, 2021, 11:53pm UTC](https://discuss.ray.io/t/when-using-dask-is-loadbalance-spillback-still-best-practice/2281 "2021-05-24T23:53:55Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Erik\_Erlandson](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/erik_erlandson/32/391_2.png) [@Erik\_Erlandson](https://discuss.ray.io/u/Erik_Erlandson)\
**Post date:** [May 24, 2021, 11:53pm UTC](https://discuss.ray.io/t/when-using-dask-is-loadbalance-spillback-still-best-practice/2281/1 "2021-05-24T23:53:55Z")

</div>

as in:

`RAY_SCHEDULER_LOADBALANCE_SPILLBACK=1 ray start --head --num-cpus=0`

The instructions specifically mention ray 1.3 - is this env setting also still recommended for ray 2.0?  
[https://docs.ray.io/en/master/dask-on-ray.html#best-practice-for-large-scale-workloads](https://docs.ray.io/en/master/dask-on-ray.html#best-practice-for-large-scale-workloads)

---

<div class="post-metadata">

**Author:** ![sangcho](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/sangcho/32/425_2.png) [@sangcho](https://discuss.ray.io/u/sangcho)\
**Post date:** [May 24, 2021, 11:57pm UTC](https://discuss.ray.io/t/when-using-dask-is-loadbalance-spillback-still-best-practice/2281/2 "2021-05-24T23:57:49Z")

</div>

From 2.0, we made a better scheduling policy, and it is likely that you don’t need this option.

---

<div class="post-metadata">

**Author:** ![Erik\_Erlandson](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/erik_erlandson/32/391_2.png) [@Erik\_Erlandson](https://discuss.ray.io/u/Erik_Erlandson)\
**Post date:** [May 25, 2021, 12:03am UTC](https://discuss.ray.io/t/when-using-dask-is-loadbalance-spillback-still-best-practice/2281/3 "2021-05-25T00:03:12Z")

</div>

good to know, thanks! 👍

---

<div class="post-metadata">

**Author:** ![sangcho](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/sangcho/32/425_2.png) [@sangcho](https://discuss.ray.io/u/sangcho)\
**Post date:** [May 25, 2021, 5:55pm UTC](https://discuss.ray.io/t/when-using-dask-is-loadbalance-spillback-still-best-practice/2281/4 "2021-05-25T17:55:31Z")

</div>

Please let us know if you see any issue (like object store memory usage is not well load balanced).