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Difference between revisions of "MPI Hello World"
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→MPI Hello World
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and keep adding lines until you get to <tt> pnode40 </tt>.
The next step assumes you have set up your ssh keys as described in [[Cluster SSH Access]]
With 40 nodes listed in your <tt> cluster_hosts </tt> file, run your program again with
mpirun --hostfile cluster_hosts ./hello_mpi
You should see the output shown below, which is 160 lines long, four responses from each host, one for each core described.
Once you are able to run this program successfully, your MPI setup is working. This will be necessary before you can run other MPI-based programs, such as ipyparallel programs which use MPI.
<nowiki>
Hello, world, I am 126 of 160
Hello, world, I am 69 of 160
Hello, world, I am 159 of 160
Hello, world, I am 137 of 160
Hello, world, I am 11 of 160
Hello, world, I am 138 of 160
Hello, world, I am 139 of 160
Hello, world, I am 3 of 160
Hello, world, I am 125 of 160
Hello, world, I am 68 of 160
Hello, world, I am 0 of 160
Hello, world, I am 127 of 160
Hello, world, I am 71 of 160
Hello, world, I am 8 of 160
Hello, world, I am 136 of 160
Hello, world, I am 85 of 160
Hello, world, I am 2 of 160
Hello, world, I am 124 of 160
Hello, world, I am 70 of 160
Hello, world, I am 51 of 160
Hello, world, I am 9 of 160
Hello, world, I am 86 of 160
Hello, world, I am 21 of 160
Hello, world, I am 1 of 160
Hello, world, I am 25 of 160
Hello, world, I am 143 of 160
Hello, world, I am 119 of 160
Hello, world, I am 6 of 160
Hello, world, I am 10 of 160
Hello, world, I am 84 of 160
Hello, world, I am 133 of 160
Hello, world, I am 156 of 160
Hello, world, I am 23 of 160
Hello, world, I am 100 of 160
Hello, world, I am 146 of 160
Hello, world, I am 27 of 160
Hello, world, I am 118 of 160
Hello, world, I am 55 of 160
Hello, world, I am 32 of 160
Hello, world, I am 123 of 160
Hello, world, I am 67 of 160
Hello, world, I am 87 of 160
Hello, world, I am 135 of 160
Hello, world, I am 157 of 160
Hello, world, I am 20 of 160
Hello, world, I am 130 of 160
Hello, world, I am 120 of 160
Hello, world, I am 12 of 160
Hello, world, I am 82 of 160
Hello, world, I am 48 of 160
Hello, world, I am 132 of 160
Hello, world, I am 158 of 160
Hello, world, I am 22 of 160
Hello, world, I am 131 of 160
Hello, world, I am 101 of 160
Hello, world, I am 145 of 160
Hello, world, I am 24 of 160
Hello, world, I am 140 of 160
Hello, world, I am 117 of 160
Hello, world, I am 113 of 160
Hello, world, I am 154 of 160
Hello, world, I am 7 of 160
Hello, world, I am 53 of 160
Hello, world, I am 33 of 160
Hello, world, I am 16 of 160
Hello, world, I am 28 of 160
Hello, world, I am 111 of 160
Hello, world, I am 121 of 160
Hello, world, I am 13 of 160
Hello, world, I am 64 of 160
Hello, world, I am 88 of 160
Hello, world, I am 96 of 160
Hello, world, I am 83 of 160
Hello, world, I am 49 of 160
Hello, world, I am 134 of 160
Hello, world, I am 128 of 160
Hello, world, I am 102 of 160
Hello, world, I am 148 of 160
Hello, world, I am 147 of 160
Hello, world, I am 26 of 160
Hello, world, I am 36 of 160
Hello, world, I am 141 of 160
Hello, world, I am 58 of 160
Hello, world, I am 73 of 160
Hello, world, I am 46 of 160
Hello, world, I am 116 of 160
Hello, world, I am 114 of 160
Hello, world, I am 155 of 160
Hello, world, I am 4 of 160
Hello, world, I am 52 of 160
Hello, world, I am 34 of 160
Hello, world, I am 62 of 160
Hello, world, I am 17 of 160
Hello, world, I am 29 of 160
Hello, world, I am 76 of 160
Hello, world, I am 92 of 160
Hello, world, I am 81 of 160
Hello, world, I am 50 of 160
Hello, world, I am 129 of 160
Hello, world, I am 103 of 160
Hello, world, I am 149 of 160
Hello, world, I am 144 of 160
Hello, world, I am 37 of 160
Hello, world, I am 142 of 160
Hello, world, I am 56 of 160
Hello, world, I am 75 of 160
Hello, world, I am 47 of 160
Hello, world, I am 40 of 160
Hello, world, I am 106 of 160
Hello, world, I am 115 of 160
Hello, world, I am 152 of 160
Hello, world, I am 5 of 160
Hello, world, I am 54 of 160
Hello, world, I am 35 of 160
Hello, world, I am 63 of 160
Hello, world, I am 18 of 160
Hello, world, I am 30 of 160
Hello, world, I am 77 of 160
Hello, world, I am 93 of 160
Hello, world, I am 108 of 160
Hello, world, I am 122 of 160
Hello, world, I am 14 of 160
Hello, world, I am 65 of 160
Hello, world, I am 89 of 160
Hello, world, I am 99 of 160
Hello, world, I am 153 of 160
Hello, world, I am 61 of 160
Hello, world, I am 19 of 160
Hello, world, I am 31 of 160
Hello, world, I am 78 of 160
Hello, world, I am 94 of 160
Hello, world, I am 109 of 160
Hello, world, I am 15 of 160
Hello, world, I am 66 of 160
Hello, world, I am 91 of 160
Hello, world, I am 97 of 160
Hello, world, I am 80 of 160
Hello, world, I am 150 of 160
Hello, world, I am 38 of 160
Hello, world, I am 57 of 160
Hello, world, I am 72 of 160
Hello, world, I am 44 of 160
Hello, world, I am 41 of 160
Hello, world, I am 107 of 160
Hello, world, I am 112 of 160
Hello, world, I am 59 of 160
Hello, world, I am 74 of 160
Hello, world, I am 45 of 160
Hello, world, I am 42 of 160
Hello, world, I am 104 of 160
Hello, world, I am 79 of 160
Hello, world, I am 110 of 160
Hello, world, I am 90 of 160
Hello, world, I am 98 of 160
Hello, world, I am 151 of 160
Hello, world, I am 39 of 160
Hello, world, I am 43 of 160
Hello, world, I am 105 of 160
Hello, world, I am 60 of 160
Hello, world, I am 95 of 160
</nowiki>
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