# Deblur host parameters

**URL:** https://forum.qiime2.org/t/deblur-host-parameters/3596
**Category:** User Support
**Tags:** deblur
**Created:** [March 28, 2018, 4:40pm UTC](https://forum.qiime2.org/t/deblur-host-parameters/3596 "2018-03-28T16:40:37Z")
**Posts on this page:** 6
**Page:** 1

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### Author: ![wym199633](https://forum.qiime2.org/letter_avatar_proxy/v4/letter/w/b3f665/32.png) [@wym199633](https://forum.qiime2.org/u/wym199633)
#### Post date: [March 28, 2018, 4:40pm UTC](https://forum.qiime2.org/t/deblur-host-parameters/3596/1 "2018-03-28T16:40:37Z")

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Hi guys, I have a very similar problem.  
I'm doing the deblur to my sequence data. I assigned 18971MB memory/49152MB total and 5CPU/12CPUs total to the VB. But when I open the task manager in Host, only 10% CPU it used.(1 or 2 CPU?) I'm wondering how to speed up the deblur step, to make full use of the computer?

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### Author: ![ebolyen](https://forum.qiime2.org/user_avatar/forum.qiime2.org/ebolyen/32/11_2.png) [@ebolyen](https://forum.qiime2.org/u/ebolyen)
#### Post date: [March 29, 2018, 3:22pm UTC](https://forum.qiime2.org/t/deblur-host-parameters/3596/2 "2018-03-29T15:22:06Z")

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### Author: ![thermokarst](https://forum.qiime2.org/letter_avatar_proxy/v4/letter/t/8e7dd6/32.png) [@thermokarst](https://forum.qiime2.org/u/thermokarst)
#### Post date: [March 29, 2018, 7:44pm UTC](https://forum.qiime2.org/t/deblur-host-parameters/3596/3 "2018-03-29T19:44:52Z")

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Hi @wym199633! According [to the docs](https://docs.qiime2.org/2018.2/plugins/available/deblur/denoise-16S/), there is a parameter `--p-jobs-to-start` to control the number of jobs started when running deblur. Try increasing this to a value appropriate for your execution environment! Keep us posted!  
Thanks! 🦖

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### Author: ![thermokarst](https://forum.qiime2.org/letter_avatar_proxy/v4/letter/t/8e7dd6/32.png) [@thermokarst](https://forum.qiime2.org/u/thermokarst)
#### Post date: [March 29, 2018, 7:44pm UTC](https://forum.qiime2.org/t/deblur-host-parameters/3596/4 "2018-03-29T19:44:55Z")

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### Author: ![wym199633](https://forum.qiime2.org/letter_avatar_proxy/v4/letter/w/b3f665/32.png) [@wym199633](https://forum.qiime2.org/u/wym199633)
#### Post date: [April 11, 2018, 9:59pm UTC](https://forum.qiime2.org/t/deblur-host-parameters/3596/6 "2018-04-11T21:59:24Z")

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Thank for your reply! It works!

Yours,  
Oliver

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### Author: ![system](https://forum-qiime2-org.s3.dualstack.us-west-2.amazonaws.com/original/3X/2/1/21af5fe23cb6f4579467c66a9ed94e55274ca7bd.svg) [@system](https://forum.qiime2.org/u/system)
#### Post date: [May 13, 2018, 3:59am UTC](https://forum.qiime2.org/t/deblur-host-parameters/3596/7 "2018-05-13T03:59:25Z")

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