Re: [AMBER-Developers] CMake in Amber

From: Scott Le Grand <varelse2005.gmail.com>
Date: Sun, 4 Apr 2021 08:55:01 -0700

Ross sent me two screenshots of cmake losing its mind with an 11.x toolkit.
I'll file an issue, but no, I'm not going to fix cmake issues myself at
all. I'm open to someone convincing me cmake is better than the configure
script, but no one has made that argument yet beyond "because cmake" and
until that happens, that just doesn't work for me. Happy to continue
helping with the build script that worked until convinced otherwise.
Related: I still use nvprof, fight me.

Meanwhile, AMBER16 refactored to SM 7 and beyond is already hitting 730
ns/day on JAC NVE 2 fs. AMBER20 with the grid interpolation and local force
precision sub FP32 force hacks removed hits 572 ns/day (down from 632 if
left in as we shipped it). That puts me nearly 1/3 to my goal of doubling
overall AMBER performance which is what is important to me and where I'm
going to focus my efforts as opposed to the new shiny build system that is
getting better (and I *hate* cmake for cmake's sake), but we rushed it to
production IMO like America reopened before the end of the pandemic.





On Sun, Apr 4, 2021 at 5:51 AM David A Case <david.case.rutgers.edu> wrote:

> On Sat, Apr 03, 2021, Scott Le Grand wrote:
>
> >cmake is still not quite ready for prime time disruption of configure.
> It's
> >getting there though.
>
> If there are problems with cmake, please create an issue on gitlab, and
> mention .multiplemonomials to get Jamie's attention. Please try to avoid
> the syndrome of saying "I can get this to work with configure, and I'm to
> busy right now to do anything else."
>
> I have removed the documentation for the configure process in the Amber21
> Reference Manual, although the files are still present. We can't continue
> to support and test two separate build systems, each with their own bugs.
>
> ...thx...dac
>
>
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