Looking at what you have provided, the efollowing needs to be changed:
you have:
MaxBurstLength=1048576
FirstBurstLength=262144

change to:
MaxBurstLength=16776192
FirstBurstLength=65536

Also you need to make sure to change each target, not just the first one.

Overall these settings work welll:
maxRecvDataSegmentLen=262144
MaxBurstLength=16776192
Maxxmitdatasegment=262144
FirstBurstLength=65536
DataDigest=None
maxoutstandingr2t=8
InitialR2T=No
ImmediateData=Yes
headerDigest=None
Wthreads=8

And I cant see the NIC settings in your upload, but you can also try jubo frames for the NICs: http://kb.open-e.com/Does-Open-E-sup...Frames_28.html

Make sure initiators have matching settings, as this can cause the machine to seem locked/stalled.

But complete logs would give a better picture as to wether or not there are other issues.
I can only see a few files in yur link, not the whole package.