# Addprocs() error, add remote machine

**URL:** https://discourse.julialang.org/t/addprocs-error-add-remote-machine/8119
**Category:** Julia at Scale
**Tags:** question
**Created:** [January 3, 2018, 2:45am UTC](https://discourse.julialang.org/t/addprocs-error-add-remote-machine/8119 "2018-01-03T02:45:27Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![zhangliye](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/zhangliye/32/3208_2.png) [@zhangliye](https://discourse.julialang.org/u/zhangliye)
#### Post date: [January 3, 2018, 2:45am UTC](https://discourse.julialang.org/t/addprocs-error-add-remote-machine/8119/1 "2018-01-03T02:45:27Z")

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I have several machines in the LAN, and run the addprocs() on one machine to add cores from another remote machine. I do not know how to set the user password in addprocs(). The error is as follows.  
Can anyone give me some suggestion? Thanks!

 ![error](https://global.discourse-cdn.com/julialang/original/3X/4/d/4d440d75cc8a6967f692cc8322761f1c7bdb08c1.png)

The system is information is as follows  
 ![捕获](https://global.discourse-cdn.com/julialang/original/3X/4/a/4ad5d2772d2154399236cfdc1ab7f29ac95a38ae.png)

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<div class="post-metadata">

### Author: ![zhangliye](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/zhangliye/32/3208_2.png) [@zhangliye](https://discourse.julialang.org/u/zhangliye)
#### Post date: [January 3, 2018, 6:14am UTC](https://discourse.julialang.org/t/addprocs-error-add-remote-machine/8119/2 "2018-01-03T06:14:14Z")

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Solved by creating public key file using SSH.