That error message sequence reminds me of the one I saw in debugging a problem on julia 0.4 that was missing a "GC root," meaning that some julia variable allocated from the C code was not being correctly protected from garbage- collection.
While the bug I fixed can't be present on 0.3 (the relevant code is julia 0.4- only), it is possible that your bug has been fixed by someone else in the meantime---there have been quite a few updates to the 0.3 series. Since you're running a slightly outdated version, can you update to the latest 0.3 release? If updating doesn't fix it, please file an issue with the code needed to reproduce the problem. Best, --Tim On Sunday, November 23, 2014 07:48:08 PM Kapil Agarwal wrote: > Hi > > I am running a parallel matrix transpose using Julia. When I run it on a > small matrix with small number of workers, it works fine, but as I increase > the size and the number of workers, it starts giving MemoryError() and > Broken pipe signals. > > I have put the error stacktrace here : > https://github.com/kapiliitr/JuliaBenchmarks/blob/master/error.txt > > I checked that my program was not making any bounds errors and that the > result is correct. Also, I did not find any errors in the source code from > the stacktrace. > I am basically dealing with large matrices of the order of 1000X1000 > elements and around 50-200 worker processes. > > I have a machine with 24 cores and around 24 GB memory, so could this be a > problem with my system or is there a limit to how many workers Julia can > launch and allocate memory ? > > Thanks > > Kapil
