# n\_jobs on windows

**URL:** <https://mne.discourse.group/t/n-jobs-on-windows/1423>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [February 13, 2018, 2:43pm UTC](https://mne.discourse.group/t/n-jobs-on-windows/1423 "2018-02-13T14:43:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [February 13, 2018, 2:43pm UTC](https://mne.discourse.group/t/n-jobs-on-windows/1423/1 "2018-02-13T14:43:10Z")

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Hi,

I tried to set n\_jobs (from mne.filter.filter\_data) \> 1 on windows 10 with  
no success (computer crashed). Has anyone figured this out?

Best,  
Mat  
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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [February 13, 2018, 6:06pm UTC](https://mne.discourse.group/t/n-jobs-on-windows/1423/2 "2018-02-13T18:06:10Z")

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hi Mat,

we you use n\_jobs \> 1 you need more RAM on your machine.  
that can explain the crash if you don't have enough RAM.

Alex

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [February 14, 2018, 10:15pm UTC](https://mne.discourse.group/t/n-jobs-on-windows/1423/3 "2018-02-14T22:15:07Z")

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Hi Alex,

I have 32768MB RAM on my machine, I don't think it's an issue. When I set  
n\_jobs = 2, python freezes, and I have to kill the process (see attached  
screen capture).

nothing happens, seems to block the execution of everything (see capture).

2018-02-13 12:06 GMT-06:00 Alexandre Gramfort \<alexandre.gramfort at inria.fr\>:

> hi Mat,
> 
> we you use n\_jobs \> 1 you need more RAM on your machine.  
> that can explain the crash if you don't have enough RAM.
> 
> Alex
> 
> > Hi,
> > 
> > I tried to set n\_jobs (from mne.filter.filter\_data) \> 1 on windows 10  
> > with no success (computer crashed). Has anyone figured this out?
> > 
> > Best,  
> > Mat
> > 
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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [February 15, 2018, 2:03am UTC](https://mne.discourse.group/t/n-jobs-on-windows/1423/4 "2018-02-15T02:03:43Z")

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If you do:

> > > print(epochs\_learning\_1\_corr)

what does it tell you as the size of your epochs object?

Mainak