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Hi there, We're attempting to run an LVQ analysis over a cluster of machines via R and openMosix. R spawns several child processes simply by writing commands to several files and using system() to start a slave process. The processes migrate perfectly, and often finish with no reported errors, writing their results into respective files for the parent process to piece together.

Hi there, We're currently attempting to explain a slowdown of an LVQ-type parallel analysis we're working on. We are benchmarking our analysis running over openMosix against the same running via SNOW for R. Both perform similarly on small datasets, but on large datasets SNOW drastically outperforms openMosix. However, these results are achieve running SNOW on the default RedHat

...ds like a great idea but it seems to cause problems in our setup--that is, with DFSA off we go a lot longer without oMFS misbehavior or other odd phenomena than when DFSA is on. How many processes do you run at a time? Reid Huntsinger -----Original Message----- From: Jim Thomas [mailto:james at staarfunds.com] Sent: Wednesday, April 21, 2004 3:14 PM To: Huntsinger, Reid Cc: r-help at stat.math.ethz.ch; openmosix-general at lists.sourceforge.net Subject: Re: [openMosix-general] openMosix and R: File I/O issues? Memory could be an issue. The three nodes in the cluster we are using only have 512 MB...

Memory could be an issue. The three nodes in the cluster we are using only have 512 MB. The machines are otherwise identical in terms of hardware. They are dual PIIIs (purchased from Penguin Computing in 2001). (If you need specs on motherboard etc, we can get that info together.) The installed operating system is RHEL-3, standard workstation with some additional libraries (e.g., all of the