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to core 1, socket 0
Thread 3 goes to core n
+2, socket 1
and so on …
The environment variables force the places to be spread apart as much as possible, where places are cores. Therefore
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-n
Show version
-v
Table 3
Editing Commands
Action
Command
Add lines above this one
i
Add lines below this one
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the code is straightforward:
$ mpirun -n 4 -f ./hosts python3 trap-mpi4py.py
Another sample problem (Listing 8) integrates x
^2 over the interval from 0.0 to 2.0. The output contains information about what
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the final answer.
The command to run the code is straightforward:
$ mpirun -n 4 -f ./hosts python3 trap-mpi4py.py
Another sample problem (Listing 8) integrates x
^2 over the interval from 0.0 to 2
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sizes (Listing 1). The second script (Listing 2) is the same as Listing 1, but uses double precision.
Listing 1: Single-Precision Square Matrix Multiply
# Example SGEMM
for N = [2, 4, 8, 16
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.6 M
Is this ok [y/N]: y
Downloading Packages:
(1/5): apr-1.3.9-3.el6_1.2.i686.rpm | 128 kB 00:00
(2/5): expat-2.0.1-11.el6_2.i686.rpm
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=====================================================================================================================================
Install 1 Package(s)
Total download size: 297 k
Installed size: 908 k
Is this ok [y/N]: y
Downloading Packages:
libstdc++-4.4.6-3.el6.i686.rpm ...
Warewulf 3 libstdc code
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environment, you rub against the additional complexity of coordinating different server, storage, and network platforms in the data center and in the cloud. For example, it often makes sense to set up
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Listing 6: Torque Job Script
[laytonjb@test1 TEST]$ more pbs-test_001
1 #!/bin/bash
2 ###
3 ### Sample script for running MPI example for computing PI (Fortran 90 code)
4 ###
5 ### Jeff Layton
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|21|" | cut -d\| -f3`
48 b=`cat $newdat | grep "50|25|" | cut -d\| -f3`
49
50 a=$(echo $a | tr \, \.)
51 b=$(echo $b | tr \, \.)
52
53
54 psum=$(echo "$a+$b" | bc )
55 echo -n "Invoice amount: $psum, continue
