Dear colleagues, When I use “import pymc3 as pm” and run a code I receive this warning: WARNING (theano.configdefaults): g++ not available, if using conda: conda install m2w64-toolchain Could you please let me know where I can find and install G++? Is there any tip or trick for installing G++? Y…

Did you install pymc as describe in the Installation section of this page (edit: this is the version 3 link, see below)? [Edit:] Current installation instructions can be found here .

Thank you for your reply. No! I am using PyCharm and I simply used “Python Packages” in PyCharm to install “pymc3”. Do you recommend to move on step by step to install “pymc3” based on the page you shared?

Given the somewhat involved dependencies (all that stuff that makes pymc go fast), it is strongly recommended that you install pymc and its required packages using those instructions. There are also several annoying platform-specific installation issues that those instructions take care of.

Many thanks for your reply and the recommendation.

@Majid-Eskafi I’m wondering if your problem is solved, or is there anything else we can help you with?

@almostmeenal thank you for asking. Yes, I installed pmc3 from the link that @cluhmann suggested and I do not receive the same warning. However, now I am receiving this warning and I would appreciate your reply if you let me know how I can fix it: WARNING (theano.tensor.blas): Using NumPy C-API ba…

@Majid-Eskafi this warning is telling you that a necessary library that will speed up theano processing is missing and hence it is going to use Numpy C-API based BLAS functions. BLAS (Basic Linear Algebra Subprograms) is a critical foundational library for a lot of math related operations (particul…

Here is a tested solution that eliminates the blas warning message. This solution was posted by “@KTada777” in this thread linked below: Windows 10, Pymc3, GCC Compilers, Blas Warnings At this point, I created the .theanorc file with the following 2 lines [blas] ldflags = -lblas and put it the d…

here is the conda list: Name Version Build Channel argon2-cffi 20.1.0 py38h2bbff1b_1 arviz 0.11.4 pypi_0 pypi async_generator 1.10 pyhd3eb1b0_0 attrs …

@sree_datta thank you. It worked. I see every time a problem is solved, but still, I can not run my model. Now I do not have the same error as before. However, I receive this warning: Problem occurred during compilation with the command line below: “C:\ProgramData\chocolatey\bin\g++.exe” Any rep…

Installation of G++

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Majid-Eskafi February 13, 2022, 12:56pm 16

I could find the solution and successfully install and run Pymc3 using these detailed instructions by @sree_datta.

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Installation of G++

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