You definitely want time synchronization between all of your machines. It's super easy to do these days, just installing the ntp package with whatever your distribution default settings should do the trick. e.g. 'aptitude install ntp' on Debian/Ubuntu If you have to choose NTP servers, just use pool.ntp.org http://www.pool.ntp.org/en/use.html On 10/24/2013 12:14 PM, Jay Vyas wrote: > FYI, these two machines are not clock synchronized, but -- should that > be an issue? -- Alex Chekholko chekh at stanford.edu 347-401-4860