[gridftp-user] "-pp" Parameter in globus-url-copy for GT 4.2.1

[Graham Jenkins]

Guys, I'm trying to transfer large numbers of 300Mb files from one side
of Australia to the other using a command like:

 globus-url-copy -vb -udt -p 4 -pp file:///data/ftp/tmp/d1/ sshftp://graham@arcs-df.ivec.org/var/tmp/graham/
 
And what I'm seeing in the logs is:
--
Source: file:///data/ftp/tmp/d1/
Dest:   sshftp://graham@arcs-df.ivec.org/var/tmp/graham/
  v252l_Pk_058_224710.lba
    207618048 bytes        39.60 MB/sec avg        39.60 MB/sec inst
    320004096 bytes        40.16 MB/sec avg        41.22 MB/sec inst

Source: file:///data/ftp/tmp/d1/
Dest:   sshftp://graham@arcs-df.ivec.org/var/tmp/graham/
  v252l_Pk_058_102440.lba
    232521728 bytes        44.35 MB/sec avg        44.35 MB/sec inst
      .. etc.
--

In other words, each file is sent in its entirety before transfer of the
next one starts.  And some timing tests reveal that the net transfer
time for a batch of files is identical, whether or not I specify "-pp".

>From reading the documentation, I would have thought that multiple files
would be sent in simultaneity.  So what am I doing wrong here?

-- 
Graham Jenkins
Australian Research Collaboration Service
Victorian Partnership for Advanced Computing
(+613) 9925-4862