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Update partitions.conf docs for rate and mtu fixes #31 #32

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Update partitions.conf docs for rate and mtu fixes #31 #32

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f1aeb09
Document the magic rate and mtu values
KelleyCook Mar 30, 2023
992bbb0
bump up mtu example
KelleyCook Mar 30, 2023
30dbdba
Use searchable english
KelleyCook Mar 30, 2023
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44 changes: 38 additions & 6 deletions doc/partition-config.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -91,10 +91,42 @@ General file format:
bits.

mgroup_flag:
rate=<val> - specifies rate for this MC group
(default is 3 (10GBps))
mtu=<val> - specifies MTU for this MC group
(default is 4 (2048))
rate=<val> - specifies rate selector for this MC group
| Selector | Gb/s | |
|----------|--------|---------|
| 2 | 2.5 | |
| 3 | 10 | default |
| 4 | 30 | |
| 5 | 5 | |
| 6 | 20 | |
| 7 | 40 | |
| 8 | 60 | |
| 9 | 80 | |
| 10 | 120 | |
| 11 | 14 | |
| 12 | 56 | |
| 13 | 112 | |
| 14 | 168 | |
| 15 | 25 | |
| 16 | 100 | |
| 17 | 200 | |
| 18 | 300 | |
| 19 | 28 | |
| 20 | 50 | |
| 21 | 400 | |
| 22 | 600 | |
| 23 | 800 | |
| 24 | 1200 | |

mtu=<val> - specifies MTU selector for this MC group
| Selector | MTU | |
|----------|--------|---------|
| 1 | 256 | |
| 2 | 512 | |
| 3 | 1024 | |
| 4 | 2048 | default |
| 5 | 4096 | |

sl=<val> - specifies SL for this MC group
(default is 0)
scope=<val> - specifies scope for this MC group
Expand All @@ -117,8 +149,8 @@ General file format:
NOTE: All mgroup_flag flags MUST be separated by comma (,).

Note that values for rate, mtu, and scope, for both partitions and multicast
groups, should be specified as defined in the IBTA specification (for example,
mtu=4 for 2048).
groups, should be specified as defined in the IBTA specification.
For example, "mtu=5" to allow 4K MTU sizes of 4096.

There are several useful keywords for PortGUID definition:

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