  Gravitational wave bursts produced by supermassive binary black hole mergers
will leave a persistent imprint on the space-time metric. Such gravitational
wave memory signals are detectable by pulsar timing arrays as a glitch event
that would seem to occur simultaneously for all pulsars. In this paper, we
describe an initial algorithm which can be used to search for gravitational
wave memory signals. We apply this algorithm to the Parkes Pulsar Timing Array
data set. No significant gravitational wave memory signal is founded in the
data set.
