# Using RStan 2.18 with MPI (?)

**URL:** <https://discourse.mc-stan.org/t/using-rstan-2-18-with-mpi/6388>\
**Category:** RStan\
**Created:** [November 6, 2018, 11:17pm UTC](https://discourse.mc-stan.org/t/using-rstan-2-18-with-mpi/6388 "2018-11-06T23:17:10Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![stemangiola](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/stemangiola/32/260_2.png) [@stemangiola](https://discourse.mc-stan.org/u/stemangiola)\
**Post date:** [November 6, 2018, 11:17pm UTC](https://discourse.mc-stan.org/t/using-rstan-2-18-with-mpi/6388/1 "2018-11-06T23:17:10Z")

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I was not able to find anything online regarding this.

Although there is documentation on Stan MPI [https://github.com/stan-dev/math/wiki/Threading-Support](https://github.com/stan-dev/math/wiki/Threading-Support)

I am not sure whether RStan 2.18 is ready for MPI parallelisation, and if so whether there is some documentation around.

Thanks.

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**Author:** ![bgoodri](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/bgoodri/32/4451_2.png) [@bgoodri](https://discourse.mc-stan.org/u/bgoodri)\
**Post date:** [November 6, 2018, 11:34pm UTC](https://discourse.mc-stan.org/t/using-rstan-2-18-with-mpi/6388/2 "2018-11-06T23:34:47Z")

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There is no specific RStan documentation for MPI. It is basically this

> **[stan-dev/math](https://github.com/stan-dev/math/wiki/MPI-Parallelism)**
>
> The Stan Math Library is a C++, reverse-mode automatic differentiation library designed to be usable, extensive and extensible, efficient, scalable, stable, portable, and redistributable in order t...

  
but referring to ~/.R/Makevars rather than make/local .

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<div class="post-metadata">

**Author:** ![stemangiola](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.mc-stan.org/stemangiola/32/260_2.png) [@stemangiola](https://discourse.mc-stan.org/u/stemangiola)\
**Post date:** [November 6, 2018, 11:41pm UTC](https://discourse.mc-stan.org/t/using-rstan-2-18-with-mpi/6388/3 "2018-11-06T23:41:17Z")

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Thanks,

> [@bgoodri](#):
>
> referring to ~/.R/Makevars rather than make/local

a short mention of this in the document, I’m sure will be helpful for other RStan users. I can contribute with this small edit myself if helpful.