Differences

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--- doku:mpi_tuning [2012/12/18 09:01] – external edit 127.0.0.1
+++ doku:mpi_tuning [2021/05/13 17:57] (current) – removed goldenberg
@@ Line 1: / Line 1: @@
-====== Tools for tuning MPI ======
-===== Instrumentation tools (trace and profiling) =====
-Currently these tools for generating trace and profile information of MPI executables are installed on the login nodes:
-==== VAMPIRTRACE ====
-VAMPIRTRACE is maintained by the computing centre of TU Dresden. Linking the Libraries to your executable Produces profiling and tracing information. Currently it is available for free.
-[[http://tu-dresden.de/die_tu_dresden/zentrale_einrichtungen/zih/forschung/software_werkzeuge_zur_unterstuetzung_von_programmierung_und_optimierung/vampirtrace|VAMPIRTRACE Homepage]]
-Location on VSC-1: ''/opt/vampirtrace''
-==== TAU ====
-Another Tool is TAU, which is provided by different Institutions [[http://www.cs.uoregon.edu/research/tau/docs.php|TAU Homepage]]
-It provides viewing tools for profiles and traces (PARAPROF and JUMPSHOT)
-Location on VSC-1: ''/opt/tau''
-Sample jobscript for generating tracing information using TAU
-   #$ -N tau
-   #$ -q all.q
-   #$ -pe mpich 8
-   #$ -l h_rt=2:0:0
-   mpirun  -m $TMPDIR/machines -np $NSLOTS tau_exec -T PROFILE -T TRACE -io ./vasp''
-This produces .edf and .trc files. Then one has to
-merge these files via:
-<code>
-tau_merge -e events.*.edf -m vasp_events.edf tautrace.*.0.0.trc vasp.trc
-</code>
-and finally the 'vasp.trc' and the 'vasp_events.edf' files need to
-be converted into .slog2 format:
-<code>
-tau2slog2 vasp.trc vasp_events.edf -o vasp.slog2
-</code>
-This file (vasp.slog2) can be visualized with jumpshot.
-===== Visualization of Profiles and Traces =====
-==== VAMPIR ====
-Currently a demo version of [[http://www.vampir.eu|VAMPIR]] is installed on VSC-1. It can visualize VAMPIRTRACE files, as well as other formats such as OTF
-Location on VSC-1: ''/opt/vampir''
-==== JUMPSHOT and PARAPROF ====
-Both are installed together with TAU.
-[[http://www.mcs.anl.gov/research/projects/perfvis/software/viewers/index.htm|JUMPSHOT Homepage]]