[mvapich-discuss] Problem with MV2_IBA_HCA

[Schwind Michael]

Hello,

there seems to be a problem when
the evironment variable MV2_IBA_HCA
is set to a value other then the 
first hca in the system.

In the function rdma_open_hca in file
rdma_iba_priv.c on lines 307 to 316
there is some code, which searches
for the specified hca in a list of hca's:


            /* User specified a HCA, try to look for it */
            j = 0;
            while(dev_list[j]) {
                if(!strncmp(ibv_get_device_name(dev_list[j]),
                            rdma_iba_hca, 32)) {
                    ib_dev = dev_list[j];
                    break;
                }
            }
            j++;

This code is a endless loop if the
value specified in rdma_iba_hca 
is different from mthca0 on my system
with 2 infiniband adapters.

The patch which should resolve this issue
is at the end of this E-Mail.

Michael


--- mvapich2/src/mpid/osu_ch3/channels/mrail/src/gen2/rdma_iba_priv.c.orig      
2006-12-04 13:47:58.000000000 +0100
+++ mvapich2/src/mpid/osu_ch3/channels/mrail/src/gen2/rdma_iba_priv.c   
2006-12-04 13:48:30.000000000 +0100
@@ -312,8 +312,9 @@
                     ib_dev = dev_list[j];
                     break;
                 }
-            }
-            j++;
+                j++;
+          }
+
         }

         if (!ib_dev) {