[R-SIG-Mac] Different performance with different R versions

[Cowan, R (MERIT)]

Thanks all, for your help.
I will turn to the  igraph lists.

Robin Cowan

> On 14 Dec 2018, at 15:26, Ista Zahn <istazahn using gmail.com> wrote:
> 
> The igraph slowdown is known, and discussed in several places, including
> 
> https://github.com/igraph/rigraph/issues/166
> https://lists.nongnu.org/archive/html/igraph-help/2015-06/msg00067.html
> https://github.com/igraph/rigraph/issues/194
> 
> --Ista
> On Fri, Dec 14, 2018 at 6:41 AM Martin Maechler
> <maechler using stat.math.ethz.ch> wrote:
>> 
>>>>>>> Ista Zahn
>>>>>>>    on Fri, 14 Dec 2018 05:58:25 -0500 writes:
>> 
>>> This isn't Mac specific (I can reproduce it in Linux). Switching the
>>> igraph from version from 1.2.2 (slow) to 0.7.1 (fast) is enough, so
>>> this also has nothing to do with R itself. This should be reported to
>>> https://igraph.org/r/, either on the mailing list, bug tracker, or
>>> both.
>> 
>>> Best,
>>> Ista
>> 
>> Indeed (on Linux, too)
>> 
>> A much shorter (and 5x faster running) version of the repr.ex.
>> R script is appended (it uses specific .libPaths() to get the
>>  correct version if igraph).
>> 
>> Martin
>>