I don't think it will take 20h, probably more like 10-12h, so that's 
only 1.5 years:). Most people who are running it that many data sets 
have access to a computational cluster (on ours it would only take a few 
weeks). Alternatively, you can try buying cloud-based computational 
power (eg, amazon web services).

On 7/30/19 4:56 PM, Jiajun Luo wrote:
>
>         External Email - Use Caution
>
> Hi,
>
> Now I have T1 and T2 images (dcm files) and want to calculate the 
> hippocampal volume. I find it takes ~20h to run recon-all -all and 
> then ~40min to run -hippocampal-subfields-T1. However, I need to 
> calculate the hippocampal volume for more than 1,000 individuals 
> (which means it may take ~3 years to complete). Do you know how I can 
> improve my efficiency?
>
> Thank you!
>
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