btl/ofi: Disable ofi_rxm provider

The ofi_rxm provider is dependent upon the underlying hardware for its
implementation of FI_DELIVERY_COMPLETE. Since this can lead to early
completions, we disable the provider to avoid correctness issues.

This is not an issue in the mtl/ofi as it does not require
FI_DELIVERY_COMPLETE.

Signed-off-by: William Zhang <wilzhang@amazon.com>

Author: wckzhang

opal/mca/btl/ofi/btl_ofi_component.c

@@ -70,6 +70,14 @@ static int validate_info(struct fi_info *info, uint64_t required_caps)
         return OPAL_ERROR;
     }
 
+    /* ofi_rxm does not fulfill FI_DELIVERY_COMPLETE requirements. Thus we
+     * exclude it if it's detected.
+     */
+    if (strstr(info->fabric_attr->prov_name, "ofi_rxm")) {
+        BTL_VERBOSE(("ofi_rxm does not support FI_DELIVERY_COMPLETE"));
+        return OPAL_ERROR;
+    }
+
     /* we need exactly all the required bits */
     if ((info->caps & required_caps) != required_caps) {
         BTL_VERBOSE(("unsupported caps"));