31/05/15 UTMOST’s new GPU install took place on May 26th. Eight 4xGPU NVIDIA TitanX servers have just been installed into the right hand rack pictured below, next to our set of 11 of 2xGPU NVIDIA GTX690s (installed in June 2013, and in the left hand rack). The new units were fully operation by the end of the week of the install, with correlation and pulsar observing possible using every element of the array. The system can peak to 258 TFlops of processing power. Observing with UTMOST presently produces 22 GBytes of data per second.
A/C ducting was added during the week to keep these GPUs cool, along with electrical work for the increased power requirements.
First fringes, using the quasar 3C273, measured across the entire array (all 352 antennae) and 15 MHz of bandwidth. 30 MHz of bandwidth will be possible with the new system, and will be tested in early June 2015.
Our new best observation of the bright Southern millsecond pulsar, 0437-4715, is shown above, with data being taken from all 352 modules of the UTMOST array during the week of the GPU install.
The DM (dispersion measure) trail of the millisecond pulsar 1909-3744 – from data taken on 31st May 2015 by PhD student Vivek V Krishnan. This pulsar’s very high rotation rate and particularly narrow pulse permits some of the most accurate timing possible with pulsars.
Congrats to everyone involved in this major installation – Andrew Jameson, Vikram Ravi, Matthew Bailes, Chris Flynn, Vivek V Krishnan, Pablo Rosado, Duncan Campell-Wilson, Tim Bateman and Dave Temby.