Category Archive: Programming

A weird little bug…

Yup. There is a weird little bug in numpy… sort of. You only need to watch out for it when subclassing numpy arrays (assuming that the subclasses you are using have avoided it.) Check out my stack overflow post about it. I’m not 100% sure, but it might just be a Python 2 thing.

librdmacm errors when using openmpi

This information can be found elsewhere, but I figured that it’s worth reposting. The bottom line here are errors that look like: librdmacm: Warning: couldn’t read ABI version. librdmacm: Warning: assuming: 4 librdmacm: Fatal: unable to get RDMA device list ————————————————————————– [[13473,1],0]: A high-performance Open MPI point-to-point messaging module was unable to find any relevant …

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Python tips, tricks and hacks

My new position involves quite a bit of python coding. Before this I’ve only known java, so I keep trying to do things the java way not the python way. Python tends to give me this feeling that there are short simple ways of doing things, but that I can’t figure them out. For example, …

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