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Published on 2010-06-01T16:10:01Z
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Hello
How to strace all processes of mpi parallel job, started with mpiexec (mpich2, linux)?
-o will mess outputs from different processes
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So you have installed your cluster and you are done with introductory material on Windows HPC. Now you want to develop an application with the most common programming model: Message Passing Interface.The MPI programming model is a standard with implementations from many vendors. For newbies (like…
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I have an MPI program which compiles and runs, but I would like to step through it to make sure nothing bizarre is happening. Ideally, I would like a simple way to attach GDB to any particular process, but I'm not really sure whether that's possible or how to do it. An alternative would be having…
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I am trying to run a program with Boost MPI, but the thing is I don't have the .lib. So I try to create one by following the instruction at http://www.boost.org/doc/libs/1_43_0/doc/html/mpi/getting_started.html#mpi.config
The instruction says "For many users using LAM/MPI, MPICH, or OpenMPI, configuration…
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Sometimes MPI is used to send low-entropy data in messages. So it can be useful to try to compress messages before sending it. I know that MPI can work on very fast networks (10 Gbit/s and more), but many MPI programs are used with cheap network like 0,1G or 1Gbit/s Ethernet and with cheap (slow,…
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I've blogged before about the MPI Cluster Debugger in VS2010 that facilitates launching the application on the cluster and attaching the debugger (btw, a shorter version of the screencast I link to there, is here).There have been requests for the code I use in the screencast, so please find a ZIP…
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Sometimes you have a stuck process that's been stuck for a while, and as soon as you go to poke at it with strace/truss just to see what's going on, it gets magically unstuck and continues to run! So from merely 'observing' these programs have some impact in the running of the stuck programs .. …
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Hi all,
I wanted to know how can i use strace function to trace system calls in my C program and also use it for debugging my code.
regs
adi
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Hello
How to strace all processes of mpi parallel job, started with mpiexec (mpich2, linux)?
-o will mess outputs from different processes
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I'm using memoize.py, but strace keeps injecting the following into the program output each time a process is executed:
[ Process PID=15733 runs in 64 bit mode. ]
or
[ Process PID=16503 runs in 32 bit mode. ]
How can I silence strace such that it doesn't inject these statements into the log…
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I'm quite new to strace / netstat / etc. I'm using this command to get a trace of the apache process handling my request (telnet), is there a way to simplify it a bit?
sudo strace -o /tmp/strace -f -s4096 -r -p $(netstat -antlp | \
grep $(lsof -p `pidof telnet` | grep TCP | \
perl -n -e'/localhost:(\d+)/…
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