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85%
Modern Fortran – Part 3
25.01.2017
Home »  HPC  »  Articles  » 
 --prefix=$HOME/gcc-6.2.0 --enable-languages=c,c++,fortran,go --disable-multilib The next step was to build and install an MPI library using the GCC 6.2.0 compilers. The OpenCoarray website recommended MPICH first, so I
85%
Warewulf Cluster Manager – Administration and Monitoring
21.08.2012
Home »  HPC  »  Articles  » 
-served directory). For the first compute node, n0001 , the logfile will be called n0001.log . Watch out for a few gotchas when writing logs to the NFS server. Some of these problems occur because, by default, SL 6.2
84%
Look for Bottlenecks with Open|SpeedShop
21.12.2011
Home »  HPC  »  Articles  » 
module load openspeedshop-2.0.1 module load mvapich-1.1  (or other MPI implementation). If you run your application like this normally, mpirun –np 256 smg2000 –n 65 65 65  or this, srun -ppbatch -N 32
84%
Improving performance with environment variables
02.08.2021
Home »  Archive  »  2021  »  Issue 64: Bare...  » 
Lead Image © sgame, fotolia.com
SGEMM for N = [2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192] A = single( rand(N,N) ); B = single( rand(N,N) ); start = clock(); C = A*B; elapsedTime = etime(clock(), start
84%
hwloc: Which Processor Is Running Your Service?
07.11.2011
Home »  HPC  »  Articles  » 
-project of the larger Open MPI community [2], is a set of command-line tools and API functions that allows system administrators and C programmers to examine the NUMA topology and to provide details about each processor
84%
Cloud-native storage with OpenEBS
25.03.2021
Home »  Archive  »  2021  »  Issue 62: Lean...  » 
.io/hostname: "node2" dataRaidGroups: - blockDevices: - blockDeviceName: "blockdevice-3f4e3fea1ee6b86ca85d2cde0f132007" - blockDeviceName: "blockdevice-db84a74a39c0a1902fced6663652118e
84%
Static code analysis finds avoidable errors
06.10.2019
Home »  Archive  »  2019  »  Issue 53: Secur...  » 
Lead Image © Andrey KOTKO, 123RF.com
, Splint [9] for C offers thorough code analysis. Listing 2 shows a deliberately broken sample program. The potential buffer overflow in line 8 and the format string vulnerability in line 9 are even
84%
Securing the container environment
01.06.2024
Home »  Archive  »  2024  »  Issue 81: Load...  » 
Lead Image © zeferli, 123RF.com
on a vulnerable pod and then it will enumerate all the secrets from the cluster (Figure 2): kubeletctl exec "whoami" -c container_name -p pod_name -n namespace --server 3.71.72.105 -i kubeletctl scan token
84%
Managing the Build Environment with Environment Modules
06.11.2012
Home »  HPC  »  Articles  » 
/mpi/mpich2-gnu4/bin/mpiexec $ module rm mpich2/1.4.1p1/gnu4 $ module load openmpi/1.6.2/gnu4 $ which mpiexec /opt/mpi/openmpi-gnu4/bin/mpiexec Notice how the path to mpiexec has changed with a change
83%
Pandas: Data analysis with Python
20.03.2014
Home »  Archive  »  2014  »  Issue 19: Perim...  » 
Lead Image © yang chao, 123RF.com
the results, whereas 'C' is initialized without a value. In: Series({'a': 1, 'b': 2, 'd': 4}, index=['a', 'b', 'c']) Out: a 1 b 2 c NaN dtype: float64 Multiple indices are also allowed; you need

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