> Hi Melvin, > I recommend that you install Globus Connect Multi-User - https://www.globusonline.org/gcmu/ and use Globus Online (www.globusonline.org) to do the transfer. > > In case of the transfer you mention below, if you add say '-p 4' or '-p 8' to the globus-url-copy command line, you should get much better transfer rate. That said, you should really be using Globus Online as it does autotuning of the parameters to get good performance. > > Raj
Hi Raj, Thank you for taking the time to respond. Adding the -p switch made no real difference: time globus-url-copy -v -p 8 file:/opt/120_GB_file.random sshftp://172.22.10.206/home/test/bigfile.random real 17m34.074s user 0m3.116s sys 1m55.821s I thought I must have managed to miss that in my reading, but that information is unfortunately missing from all of the on-line documentation that I've read over the past week. In fact, even knowing what to look for I am unable to find it mentioned in any site documentation at all. I did find it by typing globus-url-copy -help, which gives me some reading that I've not gone through yet. Any chance the lack of improvement is due to the fact that the traffic is going out one server, through a single switch, and back into the receiving server? I ask because I am not a network engineer by any means and I am trying to get an understanding of what is going on. If the infrastructure is an issue then an outside test is in order. I appreciate the suggestion of using Globus Online. We looked into that, but we do not want our data residing on systems we do not control, even if it is there for a short time. That is why I am trying so hard to set up a server/client system, so we can have almost complete control over both end-points and transfer parameters. I'll keep plugging away. Melvin
