Re: [R] Parallel computing with the snow package: external file I/O possible?

2006-04-21 Thread Martin Morgan
"Waichler, Scott R" <[EMAIL PROTECTED]> writes: > genoud()) should be independent. However, in the code below, the > directory created by each node has the same random number in its name. This is probably because 'random' numbers are generated starting from a 'seed', the seed is determined (by d

Re: [R] Parallel computing with the snow package: external file I/O possible?

2006-04-20 Thread Waichler, Scott R
Hello, After getting help to solve part of my problem and some delay on my part, I am posting a more refined version to see if someone can help me further. I am trying to autocalibrate a model in my subject area using the snow and rgenoud packages. I want to use the key function "fn" that is cal

Re: [R] Parallel computing with the snow package: external file I/O possible?

2006-03-13 Thread Martin Morgan
Hi Scott -- It took me a bit to figure it out, but the help page for system made it seem like system should return the exit status, rather than the command result, if system is invoked without specifying intern = TRUE. So why does system("hostname") actually print the host name? it's a side-effect

[R] Parallel computing with the snow package: external file I/O possible?

2006-03-13 Thread Waichler, Scott R
Hello, I am trying to do model autocalibration using the snow and rgenoud packages. The function I want to run in task-parallel fashion across multiple machines is one that pre- and post-processes data and runs an external model code. My problem is that external file I/O is happening only in t