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 …
Category Archive: Academia
Halmos – How to write mathematics – Executive Summary
Below is a summary of Halmos’ classic essay that has been tailored for myself. I hope it is of use to others. I have left out all detail and thus the list below is in no way a substitute for the article itself. Preface. What constitutes good mathematics exposition is subjective. There is no recipe …
I have to write literature too?
I wish to be a successful mathematician. I want my papers to be read, enjoyed, even eagerly anticipated. I struggle, however, to write well. Most of my posts are stream of consciousness. They are my thoughts, with only a little reflection thrown in. This I don’t mind. My blog isn’t to advertise myself, allow inclusion …
A theoretical language to study numerical computation?
I’ve just finished Jörg Frauendiener’s, “On the applicability of constrained symplectic integrators in general relativity”. It’s a readable paper (the necessary background is given in the paper) about numerical integration in Hamiltonian systems. The idea here is that if we have a symplectic manifold modelling the states of some system of ODE’s, along with a …
What do we really know about Dark Energy?
I refer you to Ruth Durrer’s very readable (and short) paper with the same title as above. The main point of the paper is that all evidence for Dark Energy comes from the measurement of luminosity distance as a function of redshift and that energy/matter content of the universe is then inferred from this measurement …