NetWorkSpaces, developed by Scientific Computing Associates Inc., provides a framework to coordinate programs written in R. It allows users to write parallel programs in R easily.
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nws 1.6.3 --------- 1. Miscellaneous example improvements. 2. Added pportfolio as a demo. 3. The fix to SleighWorkerWrapper.sh in 1.6.2 still doesn't work in cases where zsh is invoked as /bin/sh, because it seems to emulate older Bourne shells, but the SHELL environment variable is still "/bin/zsh". I gave up trying to close descriptors 10-99. 4. Fixed bug in nwsFindTryFile. 5. Added sshforwardcmd function for tunneling the sleigh workers' connections to the nws server through ssh.
nws 1.5.1 --------- 1. Added a stdout/stderr redirection to RNWSSleighWorker.sh to avoid getting error messages on the user's console when calling stopSleigh. 2. Added parallel random forest examples/benchmarks. 3. Improved some of the examples to be useful for benchmarking. nws 1.6.0 --------- 1. The "Pro" version of nws is renamed to nwsPro. 2. Added export and unexport methods to the sleigh class. nws 1.6.1 --------- 1. Added workerInfo method to sleigh class. 2. Changed default value of 'user' parameter for sleigh constructor to NULL. When using ssh, this means the '-l' option isn't used, which allows the ssh config file to be used to use host specific users, which is very useful in a heterogeneous environment. 3. Modified the values in the "worker info" variable in the sleigh workspace to include the nws version string. 4. Reduced volume of output to the log file in verbose mode. nws 1.6.2 --------- 1. Removed sleigh dependency on nwsserver >= 1.4.0. The workerInfo and export methods won't work, but the workers should not die if using an older server. 2. Changed RNWSSleighWorker.py to make the worker process a process group leader (on Unix) to aid in kill any forked child processes. 3. Fixed bug in RNWSSleighWorker.py caused by adding '%in%' into a string that was processed using the '%' operator. This bug was introduced in version 1.6.0, but would only be a problem on Windows (by default). 4. Fixed bug in SleighWorkerWrapper.sh that occurred if using some shells other than bash and zsh. 5. Exported the close method as a method, rather than a function in the NAMESPACE file.
1. Made a number of minor changes to be more Debian compatible. 2. Fixed bug in the way iterated finds worked on single mode variables.
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