Bump up default MTU for eHCA 2. Improves peak unidirectional bandwidth by around 14%

This commit was SVN r21553.

ompi/mca/btl/openib/mca-btl-openib-device-params.ini

@@ -164,7 +164,7 @@ max_inline_data = 128
 
 [IBM eHCA 4x and 12x]
 vendor_id = 0x5076
-vendor_part_id = 0,1
+vendor_part_id = 0
 use_eager_rdma = 1
 mtu = 2048
 receive_queues = P,128,256,192,128:P,65536,256,192,128
@@ -172,6 +172,16 @@ max_inline_data = 0
 
 ############################################################################
 
+[IBM eHCA-2 4x and 12x]
+vendor_id = 0x5076
+vendor_part_id = 1
+use_eager_rdma = 1
+mtu = 4096
+receive_queues = P,128,256,192,128:P,65536,256,192,128
+max_inline_data = 0
+
+############################################################################
+
 # See http://lists.openfabrics.org/pipermail/general/2008-June/051920.html
 # 0x1fc1 and 0x1077 are PCI ID's; at least one of QL's OUIs is 0x1175