  Shanghai Astronomical Observatory has upgraded its DiFX cluster to 420 CPU
cores and a 432-TB storage system at the end of 2014. An international network
connection for the raw data transfer has also been established. The routine
operations for IVS sessions including CRF, AOV, and APSG series began in early
2015. In addition to the IVS observations, the correlator is dedicated to
astrophysical and astrometric programs with the Chinese VLBI Network and
international joint VLBI observations. It also worked with the new-built Tianma
65-m radio telescope and successfully found fringes as high as at X/Ka and Q
bands in late 2015. A more powerful platform is planned for the high data rate
and massive data correlation tasks in the future.
