rsync - Jun 2004 - rsync: writefd_unbuffered failed to write 32768 bytes: phase "unknown": Broken pipe

Hi,

on HPUX 11i with ANSI/C compiler with largefile option. 
below rsync is on local file system.
# rsync -av /prod1/* /prod1n/
building file list ... done
DW/
DW/DATA/
DW/DATA/DWCOF02.DAT
rsync: writefd_unbuffered failed to write 32768 bytes: phase
"unknown":
Broken pipe
rsync error: error in rsync protocol data stream (code 12) at io.c(836)
rsync: writefd_unbuffered failed to write 69 bytes: phase "unknown":
Broken
pipe
rsync error: error in rsync protocol data stream (code 12) at io.c(836)

Tried by avvv
...
recv_generator(DWCOF02.DAT,420)
send_files(420, /prod1/DW/DATA/DWCOF02.DAT)
send_files mapped /prod1/DW/DATA/DWCOF02.DAT of size 2225391444
calling match_sums /prod1/DW/DATA/DWCOF02.DAT
DWCOF02.DAT
rsync: writefd_unbuffered failed to write 32768 bytes: phase
"unknown":
Broken pipe
rsync error: error in rsync protocol data stream (code 12) at io.c(836)
_exit_cleanup(code=12, file=io.c, line=836): about to call exit(12)
# rsync: writefd_unbuffered failed to write 69 bytes: phase "unknown":
Broken pipe
rsync error: error in rsync protocol data stream (code 12) at io.c(836)
_exit_cleanup(code=12, file=io.c, line=836): about to call exit(12)

Is there anything wrong during match_sums ?

Regards,
Keith  Yeung