Date: Mon, 5 Jun 2006 17:00:54 +0200 From: "Otheus (aka Timothy J. Shelling)" <otheus@...il.com> To: john-users@...ts.openwall.com Subject: NON-MPI parallelizing patch against 1.7.2. This patch (a) fixes problems when multiple john processes on different machines are trying to access the same file (ie, john.pot). It replaces the flock() calls with lockf() calls. You even see a message on stdout when two processes collide on the same file. (b) Adds a launching script to run john.pot in parallel on different hosts. See the "startpjohn" shell script in the run/ directory. Run it without options to see a usage summary, and edit the top of the script for your particular needs. Feedback appreciated. Note: the use_on_logfile=1 option doens't work yet. (c) Added a "task id" to the output of all log messages. This combines the hostname with process id. (When I do the MPI patch, it will use the MPI-rank instead of the pid). This is useful when all the log files go to one file. It's also useful for debugging or figuring out which process on which host is ill-behaved (god-forbid!) Solar, I hope you will consider incorporating these into your baseline code. Since there's no MPI code, and it performs reasonably well, and has minimal code changes, I think it will be to your liking. Content of type "text/html" skipped Download attachment "john-parallel.patch" of type "application/octet-stream" (8398 bytes)
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