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Re: [tlaplus] The effect of symmetry sets on TLC performance

Hi leuschel,

I am interested in your iFM'2012 paper.
However, I cannot find it following the link you provide.
Could you please send me a copy? (email: hengxin0912 at gmail dot com)

Best regards,

On Wednesday, December 2, 2015 at 9:43:18 PM UTC+8, leuschel wrote:
Hi Markus and Ron,
our experience using the TLC’s symmetry reduction was also mixed.
The extended version of our iFM’2012 paper contains a few example models where we did try TLC’s symmetry reduction:


On 2 Dec 2015, at 14:12, Markus Alexander Kuppe <tlaplus-go...@lemmster.de> wrote:

On 02.12.2015 13:23, Ron Pressler wrote:
Is there a way to improve the implementation(s) of permute()? A quick
glance at the code showed what may possibly be way too many allocations
(in tuples and record) due to what seems like an overly eager allocation
policy (e.g. arrays are allocated before even a single permuted element
is found). But as all that's required of the permutations is a
fingerprint, perhaps a more substantial optimization may be possible.

Hi Ron,

those are interesting findings. Can you send me a (stripped down)
spec/model that exemplifies the performance problem?


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