[Debichem-devel] Bug#854555: Bug#854555: mpqc3: New version needs 6GB of memory to build (?)

[Michael Banck]

Hi,

On Wed, Feb 08, 2017 at 11:45:06AM +0100, Santiago Vila wrote:
> Package: src:mpqc3
> Version: 0.0~git20170114-4
> 
> Dear maintainer:
> 
> Version 0.0~git20160216-7 of this package used to need 600 MB of RAM
> to build, but now version 0.0~git20170114-4 seems to need around 6300 MB
> of RAM to build.
> 
> This is of course not a bug by itself, but it may indicate some
> kind of anomaly in the build system, so I just wanted to check that it's ok.

I think it's ok, the new version switches on the MPQC_NEW_FEATURES code
which utilizes the TiledArray and MADNESS frameworks.

I did notice that it's much heavier during compilation (and actually
outsourced test builds to the Debian porter boxes, my personal notebook
wasn't happy about them).

If you could say which files require that much memory to compile and/or
link, I am happy to file an upstream issue requesting them to maybe
split it up or rewrite it.


Michael