I think I have a hunch as to what this is. Some googling showed that this happens when you are trying to spawn more threads than your machine can handle.
>From your previous post/discussions I understand this happens when you run the cdma_rx file. The part of this program that generates a lot of threads is the aqcuisition filterbank which we have made highly parallelized. If this is the case then it should also happen running cdma_txrx (please try it). Recall that gr-cdma is fully parameterized by the user. So to fix this (this is not a bug, it is the feature of the system) try to change the variable n_filt=51 to some smaller value (try 11). I hope you understand what the tradeoffs are (reduced capability of receiver to handle frequency errors). best, Achilleas
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