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I have been timing a particular model fit using lmer on several different computers and came up with a peculiar result - the model fit is considerably slower on a dual-core Athlon 64 using Goto's multithreaded BLAS than on a single-core processor. Here is the timing on a single-core Athlon 64 3000+ running under today's R-devel with version 0.995-5 of the Matrix package. >

Can someone give me a push in the right direction with this? I'm trying to get an upsonic IRT1000 to work on ubuntu 14.04lts using the usb connection. The most likely drivers (blazer_usb and usbhid-ups) don't seem to recognize it or I've got the configuration parameters wrong. I've got no idea what driver it actually wants though there's an old thread that seems to have got