* removing scimacnal

[fs/lustre-release.git] / lustre / portals / knals / scimacnal / README.scimacnal

diff --git a/lustre/portals/knals/scimacnal/README.scimacnal b/lustre/portals/knals/scimacnal/README.scimacnal
deleted file mode 100644 (file)
index e1ee3b5..0000000
--- a/lustre/portals/knals/scimacnal/README.scimacnal
+++ /dev/null
@@ -1,42 +0,0 @@
-
-scimacnal - A NAL for the Scali ScaMAC midlayer.
-
-The ScaMAC midlayer is a simplified API to the SCI high performance
-interconnect (http://www.scali.com/, http://www.dolphinics.com/).
-
-In order to use this NAL you'll need to tune scimac to use larger buffers.
-See scimac.conf in this directory for an example.
-
-You'll also need to edit portals/include/portals/lib-types.h and reduce
-the MTU to 64kB (the limit of scimac), this diff should help:
-
-----------------------8<----------------------------------
---- portals/include/portals/lib-types.h 27 Jul 2003 02:05:47 -0000      1.1.2.5
-+++ portals/include/portals/lib-types.h 14 Aug 2003 08:32:14 -0000
-@@ -137,8 +137,8 @@
- } lib_counters_t;
- 
- /* temporary expedient: limit number of entries in discontiguous MDs */
--# define PTL_MTU        (512<<10)
--# define PTL_MD_MAX_IOV 128
-+# define PTL_MTU        (64<<10)
-+# define PTL_MD_MAX_IOV 16
- 
- struct lib_msg_t {
-         struct list_head  msg_list;
-----------------------8<----------------------------------
-
-The NAL itself seems quite stable, though scimac has recovery bugs when
-rebooting nodes at times (confirmed by the fact that the IP driver that
-also uses scimac loses connectivity when scimacnal does).  This is
-solved by unloading lustre and reloading the scimac driver on the
-affected nodes.
-
-Performance isn't great when it comes to latency, scimac seems to have
-problems with per packet latencies (confirmed with the IP driver which
-has similar behaviour). Bandwidth using large packets is pretty OK
-(probably due to the fact that it hides the latency issues).
-
-TODO:
-Routing isn't yet implemented.
-Need some way to inform portals about our MTU.