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100%
Getting started with I/O profiling
30.11.2025
Home
»
Archive
»
2012
»
Issue 08: FreeNAS
»
Jeff
Layton
... of the compute nodes that are running a particular application, perhaps as part of a job script. When the
MPI
job runs, you will get an output file for each node, but before collecting them together, be sure you
92%
Monitor your nodes with collectl
30.11.2025
Home
»
Archive
»
2012
»
Issue 09: Windo...
»
Jeff
Layton
... . If the cluster is running
MPI
codes, then perhaps measuring the interconnect (x in brief mode and X in detailed mode) is important. This could also include Lustre [7] if you are using it in your cluster, as well
19%
Fishing with Remora
09.12.2025
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Articles
»
a specific step. This arrangement works like an
MPI
barrier function (
MPI
_Barrier ). Although collecting these timings gives you useful information, they won’t reveal which parallel process finishes last
18%
Julia: A new language for technical computing
30.11.2025
Home
»
Archive
»
2012
»
Issue 10: Traff...
»
. Applying these lessons to HPC, you might ask, "how do I tinker with HPC?" The answer is far from simple. In terms of hardware, a few PCs, an Ethernet switch, and
MPI
get you a small cluster; or, a video card
17%
Top three HPC roadblocks
30.11.2025
Home
»
Archive
»
2012
»
Issue 08: FreeNAS
»
MPI
on a cluster, OpenMP on an SMP, CUDA/OpenCL on a GPU-assisted CPU, or any combination thereof. These choices have far-reaching economic and performance consequences. Those commercial software
17%
Avoiding common mistakes in high-performance computing
30.11.2025
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2012
»
Issue 09: Windo...
»
.e.,
MPI
) and a batch scheduler. This arrangement offers a quick victory for the administrator, but could cause serious upgrade issues and downtime in the future. For instance, upgrading to a new