id,summary,reporter,owner,description,type,status,priority,milestone,component,resolution,keywords,cc,workpackage 980,Inconsistent results between Igor & SasView using Fractal Core-Shell model,smk78,butler,"Olga Koshkina & gonzalezm report inconsistent results from Igor, !SasView 4.0.1 and !SasView 4.1 when using the fractal_core_shell model. For example, putting the Igor best fit parameters in !SasView gives a totally different theory curve. I have also tested and can verify. Olga is using Mac (el captain 10.11.5). gonzalezm is using W8.1. I am using W10. So it seems to be a cross-platform issue. gonzalezm & I are not using OpenCL (we don't know about Olga). According to #792 and #877 there was a bug in 4.0.1 that butler fixed for 4.1 An OpenCL issue was also noted (#835) at that time but would not seem to be relevant here anyhow. Need someone to take a closer look at the Igor and 4.1 calculations. Aside: pkienzle has suggested (#791) re-structuring this model (and fractal) to make the S(q) part a structure factor in its own right. ",defect,closed,blocker,SasView 4.2.0,sasmodels,wontfix,,,SasView Bug Fixing