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Last modified by valad on 2024/05/28 10:16
From version 6.1
edited by valad
on 2024/05/28 10:11
Change comment: There is no comment for this version
To version 9.1
edited by valad
on 2024/05/28 10:16
Change comment: There is no comment for this version

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... ... @@ -6,15 +6,17 @@
6 6  
7 7  Bash users can add the following lines to their .bashrc:
8 8  
9 +{{code language="bash"}}
9 9  export ompi_fc='ifort'
10 10  export ompi_f77='ifort'
11 11  export ompi_cc='icc'
13 +{{/code}}
12 12  
13 -Especially if you use icc, it will be better if you use the recent ~[~[Intel Compiler 11.0>>Intel_Compiler_Temp]].
15 +Especially if you use icc, it will be better if you use the recent [[Intel compiler>>doc:Commercial Software.Intel Compiler.WebHome]].
14 14  
15 15  == Infiniband ==
16 16  
17 -The 'itp'-, 'itp-big'-, 'dfg-xeon'-, 'iboga'-, 'dreama'- and 'barcelona'-nodes have Infiniband Network. It is used by default when using our openMPI installation. Infiniband provides high bandwith with low latency. It can transport 20 GB/s with latency of 4 µs. In comparison, normal Gigabit Ethernet provides 1 GB/s with at least 30 µs latency. Latency is the time a data packet needs to travel from the source to its target. This is the main drawback when using Gigibit Ethernet for MPI communication.
19 +The '**itp**'-, '**itp-big**'-, '**dfg-xeon**'-, '**iboga**'-, '**dreama**'- and '**barcelona**'-nodes have **Infiniband** Network. It is used by default when using our openMPI installation. Infiniband provides high bandwith with low latency. It can transport 20 GB/s with latency of 4 µs. In comparison, normal Gigabit Ethernet provides 1 GB/s with at least 30 µs latency. Latency is the time a data packet needs to travel from the source to its target. This is the main drawback when using Gigibit Ethernet for MPI communication.
18 18  
19 19  = Mellanox HPCX =
20 20  
... ... @@ -24,22 +24,29 @@
24 24  
25 25  This lives in
26 26  
27 - /home/software/hpcx/current .
29 +{{code language="bash"}}
30 +/home/software/hpcx/current
31 +{{/code}}
28 28  
29 29  This points to the latest installed version.
30 30  
31 31  To use this library you have to extend your .bashrc. Include the following lines:
32 32  
37 +{{code language="bash"}}
33 33  export HPCX_HOME=/home/software/hpcx/current
34 34  source $HPCX_HOME/hpcx-init.sh
40 +{{/code}}
35 35  
36 36  This doesn't change your actual environment yet. To finally activate the setup call:
37 37  
44 +{{code language="bash"}}
38 38  hpcx_load
46 +{{/code}}
39 39  
40 40  Then all MPI tools are loaded from HPCX. This is required for building and running. You may call this is in your jobs-scripts.
41 41  
42 42  There are other MPI flavours in HPCX. Read the documentation within there:
43 43  
52 +{{code language="bash"}}
44 44  /home/software/hpcx/current/README.txt
45 -
54 +{{/code}}