Utility Programs


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In bin/, user can find several useful utility programs when manipulating logfiles. These includes log format converters, e.g. clog2slog, log format print programs, e.g. slog_print, and a script to launch display program, logviewer.



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Log Format Converters


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clog2slog
- a CLOG to SLOG logfile converter. Since the automatic generation of SLOG file through setting of environmental variable MPE_LOG_FORMAT to SLOG may NOT work for some non well-behaved MPI programs, using the logfile format converter can generate extra diagnostic information about the condition of the logfile. Also the converter allows one to adjust certain parameters of the logfile, like frame size which is the segment of the logfile to be displayed by Jumpshot-3's Time Line window. For non well behaved MPI program, one may need to increase the frame size from the default 64KB to a bigger value. For more information about the converter, do clog2slog -h.
clog2alog
- a CLOG to ALOG logfile converter. It is not being developed. It is provided here for backward compatibility purpose.



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Log Format Print Programs


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slog_print
- a stdout print program for SLOG file. It serves to check the content of the logfile. If the SLOG file is too big, it may NOT be useful to use slog_print. Also, when slog is NOT complete, slog_print won't work. So it serves as a simple test to check if the SLOG file is generated completely.
clog_print
- a stdout print program for CLOG file.



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Display Program Selector


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logviewer
- the script which involves appropriate viewer based on the file extension of logfile. For instance, if the logfile is foo.slog, logviewer will invoke Jumpshot-3 to display the logfile. Jumpshot-3 resides in share/. For more information of logviewer, do logviewer -help to list all available options.



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