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__lll_lock_wait allowing only one thread to work
I am calling the XPRESS optimizer from a multithreaded Pascal application and having performance issues with the solver. While the program is multithreaded, all but one of the threads are sleeping a...
Sorry, I am having trouble figuring out what is actually causing these locks.
What are the non-default control setting you are using?
Would you be able to share one of the models your threads solve? I think one single model exported with XPRSwriteprob (potentially using flag "s" to scramble names) would be enough. I can then just solve the same model on many threads over and over again and will hopefully be able to reproduce your issue.