Intel Trace Analyzer and Collector - Revision history

import>Cen1001 at 16:25, 25 June 2008

2008-06-25T16:25:53Z

← Older revision		Revision as of 16:25, 25 June 2008
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	traceanalyse mpi-hello.stf		traceanalyse mpi-hello.stf


			To use the failsafe libraries:

			mpicc -trace -o mpi_timer ../../mpi_timer.c -lVTfs $VT_ADD_LIBS

			then you can stop your app by touching the stopfile if things start to swap manically.

import>Cen1001 at 16:08, 25 June 2008

2008-06-25T16:08:45Z

← Older revision		Revision as of 16:08, 25 June 2008
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	mpiexec foo		mpiexec foo

	The output is voluminous and rapidly causes the nodes to swap. You can filter it.		The output is voluminous and held in memory, and it rapidly causes the nodes to swap. You can filter it so you only get traces for certain processes or nodes. My attempts to cut it down to a reasonable size while maintaining full traces have been a failure so far.

	[cen1001@zero tracing]$ cat itac.conf		[cen1001@zero tracing]$ cat itac.conf
	MEM-FLUSHBLOCKS 256 # flush to disk once you have ~~16Mb~~ of data		MEM-FLUSHBLOCKS 256 # flush to disk once you have 256*64K of data, default is 1024
	MEM-MAXBLOCKS 1024 # stop and flush if you have more than ~~64Mb~~		MEM-MAXBLOCKS 1024 # stop and flush if you have more than 1024*64K, default is 4096
	FLUSH-PREFIX /scratch/cen1001 # where to flush to		FLUSH-PREFIX /scratch/cen1001 # where to flush to
	STOPFILE-NAME /home/cen1001/STOP # this doesn't work unless you use the failsafe libs		STOPFILE-NAME /home/cen1001/STOP # this doesn't work unless you use the failsafe libs
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	qsub -v PATH,LD_LIBRARY_PATH,VT_CONFIG run.sh		qsub -v PATH,LD_LIBRARY_PATH,VT_CONFIG run.sh

	traceanalyse		traceanalyse mpi-hello.stf

import>Cen1001 at 16:06, 25 June 2008

2008-06-25T16:06:51Z

← Older revision		Revision as of 16:06, 25 June 2008
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	This is a thing that came as part of the Intel cluster toolkit on zero but I am still figuring out how to use it, sp these are rough notes.		This is a thing that came as part of the Intel cluster toolkit on zero but I am still figuring out how to use it, sp these are rough notes.

			module add itac
	mpicc -trace -o foo foo.c		mpicc -trace -o foo foo.c
	mpicc -tcollect -o foo foo.c # not sure what the difference is		mpicc -tcollect -o foo foo.c # not sure what the difference is

import>Cen1001 at 16:06, 25 June 2008

2008-06-25T16:06:41Z

@@ Line 2: / Line 2: @@
  mpicc -trace -o foo foo.c
- mpicc -tcollect -o foo foo.c
+ mpicc -tcollect -o foo foo.c # not sure what the difference is
  itcpin -- foo
  mpiexec foo

import>Cen1001 at 14:49, 25 June 2008

2008-06-25T14:49:15Z

New page

This is a thing that came as part of the Intel cluster toolkit on zero but I am still figuring out how to use it, sp these are rough notes.

mpicc -trace -o foo foo.c
mpicc -tcollect -o foo foo.c
itcpin -- foo
mpiexec foo