Another option would be to try the conda-forge rdkit. It doesn't appear to
use MKL -- I think the MKL dependency for the rdkit::rdkit package is
coming from the defaults::numpy dependency.

some tools for example scipy and pandas are only available as openblas
> builds via pypi (pip).

I believe the conda-forge recipes for these are also based on openblas. You
might try installing rdkit from conda-forge in a fresh environment and see
if those numpy / scipy builds work for you.

-- Peter

On Tue, Nov 12, 2019 at 6:48 AM Greg Landrum <greg.land...@gmail.com> wrote:

>
>
> On Tue, Nov 12, 2019 at 2:00 PM Thomas Strunz <beginn...@hotmail.de>
> wrote:
>
>>
>> So for me this is temporary workaround but not really a permanent long
>> term solution (and as far as I can tell mostly an issue of conda and
>> windows and not rdkit)
>>
>
> Yeah, it's clearly not the idea solution to the problem. And, yes, the
> problem is clearly related to conda and windows. It seems that there used
> to be a blog post explaining this (linked from this github issue:
> https://github.com/ContinuumIO/anaconda-issues/issues/656), but the URL
> no longer works and I can't find it.
> If the performance difference is that dramatic on AMD CPUs, it may be
> worth raising a new issue in the repo above and see if you get any kind of
> response.
>
> -greg
>
>
>
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