Hi all, I am having some problems working with clabels. Whenever I use mcmc algorithms with clabels the kernel dies (upon inspection, I found the error is 'segmentation fault (core dumped)'). I am not sure what I am doing wrong, so here’s a minimum working example: g = gt.collection.data["lesmis"] clabel = g.vp["clabel"] = g.new_vp("int") for v in g.vertices(): clabel[v]=np.random.randint(3) state = gt.NestedBlockState(g, state_args={'clabel':clabel,'pclabel':clabel}) for i in range(100): state.multiflip_mcmc_sweep(niter=10) If it helps, I’m getting the same problem with the following changes: - use equilibrate instead of multiflip. - use two labels instead of three. - use minimize_nested_blockmodel_dl instead of NestedBlockState - pass clabels dictionary as **args Extra information: - If I run the multifip MCMC fewer times (let’s say 10) sometimes it works, sometimes it doesn’t, so it seems that the error is somewhat stochastic. - This happens on different machines, both with Linux and Mac Is this a bug or am I doing something wrong? Best, Valerio --------------------------------------------------------------------- Lecturer in Business Applications of Informatics Room 2.18a - Informatics Forum School of Informatics - University of Edinburgh The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. Is e buidheann carthannais a th’ ann an Oilthigh Dhùn Èideann, clàraichte an Alba, àireamh clàraidh SC005336.