Observations of pulsars in Nan Observations of pulsars in Nanç çay ay with ARTEMIS backend with ARTEMIS backend M. Serylak, J.-M. Griessmeier, P. Lespagnol, A. Karastergiou, E. Keane M. Serylak, J.-M. Griessmeier, P. Lespagnol, A. Karastergiou, E. Keane LOFAR Transients KSP Meeting in Meudon LOFAR Transients KSP Meeting in Meudon December 15 December 15th th, 2011 , 2011 

In the end of March, Aris Karastergiou and In the end of March, Aris Karastergiou and Kimon Zagkouris brought ARTEMIS to Kimon Zagkouris brought ARTEMIS to Nan Nanç çay for tests with the Nan ay for tests with the Nanç çay LOFAR ay LOFAR station (FR606). station (FR606). © Ismael Cognard Several tests, including observations with real-time Several tests, including observations with real-time incoherent GPU de-dispersion were performed. incoherent GPU de-dispersion were performed. 

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First results First results PSR B1133+16 PSR B1133+16 observation using LBAs observation using LBAs PSR B0329+54 PSR B0329+54 (26 (26th th June 2011) June 2011) observation using GPUs observation using GPUs 

AR ARTE TEMIS MIS Quarter of original system consists of: Quarter of original system consists of: – – two six-core Intel Xeon CPUs, two six-core Intel Xeon CPUs, – – 48 GB RAM, 48 GB RAM, – – two nVidia GTX580 GPUs, two nVidia GTX580 GPUs, – – Ubuntu Server LTS, Ubuntu Server LTS, – – 10 TB of storage, 10 TB of storage, – – water cooling, water cooling, – – build by Patrice Lespagnol. build by Patrice Lespagnol. © Ismael Cognard © Ismael Cognard © J.-M. Griessmeier © J.-M. Griessmeier 

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PSR B0329+54 PSR B0329+54 (9 (9th th Nov 2011) Nov 2011) PSR B1133+16 PSR B1133+16 (10 (10th th Nov 2011) Nov 2011) 

– – Evan wrote scheduling scripts, Evan wrote scheduling scripts, – – tests of scheduling were performed, tests of scheduling were performed, – – observed 6 pulsars: observed 6 pulsars: B0809+74, B0823+26, B0834+06, B0809+74, B0823+26, B0834+06, B0950+08, B1133+16, B1237+25 B0950+08, B1133+16, B1237+25 – – observations were simultaneous observations were simultaneous with DE, UK, FR stations with HBA with DE, UK, FR stations with HBA and Superterp with LBA and Superterp with LBA, , – – improved version of kernel for GPU de-dispersion improved version of kernel for GPU de-dispersion was introduced, was introduced, Pulsar Busy Week #15 Pulsar Busy Week #15 

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Plans for the future Plans for the future – – build the remaining three quarters of ARTEMIS, build the remaining three quarters of ARTEMIS, – – test new GPU de-dispersion kernel, test new GPU de-dispersion kernel, – – perform more joined observations with Chilbolton and perform more joined observations with Chilbolton and Effelsberg, Effelsberg, – – continue to work on the observing/scheduling tools, continue to work on the observing/scheduling tools, – – continue targeted observations, continue targeted observations,