12%
03.01.2013
-ons, such as MPI, and rewriting the code. This approach allows you to start multiple instances of the tool on different nodes and have them communicate over a network so that code can be executed in parallel.
I won
13%
19.12.2012
’t cover it here.
MPI Profiling and Tracing
For HPC, it’s appropriate to discuss how to profile and trace MPI (Message-Passing Interface) applications. A number of MPI profiling tools are available
28%
04.12.2012
was particularly effective in HPC because clusters were composed of singe- or dual-processor (one- or two-core) nodes and a high-speed interconnect. The Message-Passing Interface (MPI) mapped efficiently onto ... HPC, parallel processing, GPU, multicore, OpenMP, MPI, many core, OpenACC, CUDA, MICs, GP-GPU
13%
24.11.2012
+ command-line interface. It includes updates to many modules, including: the HPC Roll (which contains a preconfigured OpenMPI environment), as well as the Intel, Dell, Univa Grid Engine, Moab, Mellanox, Open
12%
21.11.2012
, and subtract the first reading from the second.
034 !
035 ! This function is meant to suggest the similar routines:
036 !
037 ! "omp_get_wtime ( )" in OpenMP,
038 ! "MPI_Wtime ( )" in MPI,
039
15%
06.11.2012
options, and you notice that some simple options are a choice of MPI and BLAS libraries. Of course, you also need to choose a compiler. The task seems simple enough until you lay out the possible choices
32%
10.10.2012
for the length, but I think it’s important to see at least what the output files from openlava look like.
I did one more test – running a simple MPI program. It is simple code for computing the value of pi ... cluster, HPC, MPI, Warewulf, openlava, master node, compute node, VNFS, Platform Lava
13%
10.09.2012
------------------------------
compilers/gcc/4.4.6 module-info mpi/openmpi/1.6-open64-5.0
compilers/open64/5.0 modules null
dot mpi/mpich2/1.5b1-gcc-4.4.6 use
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21.08.2012
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
12%
21.08.2012
applications more easily that have different environment requirements, such as different MPI libraries.
For this article, as with the previous ones, I will use the exact same system. The purpose of this article