Here is my best solution so far using $RANDOM in bash
or maybe somebody has "pure R" solution ?
#!/bin/bash
for i in 1 2; do
p=tmp$i
cat > $p.R << EOF
set.seed($RANDOM)
cat('rnorm(3) =', rnorm(3), '\n')
EOF
nice R CMD BATCH --no-save --no-restore $p.R $p.log &
done
sleep 3
grep rnorm tmp[12].log
Best regards,
Ryszard
Ryszard Czerminski/PH/[EMAIL PROTECTED]
Sent by: [EMAIL PROTECTED]
06/09/2004 03:24 PM
To: [EMAIL PROTECTED]
cc:
Subject: [R] how to initialize random seed properly ?
I want to start R processes on multiple processors from single shell
script
and I want all of them to have different random seeds.
One way of doing this is
sleep 2 # (with 'sleep 1' I am often getting the same number)
...
set.seed(unclass(Sys.time()))
Is there a simpler way without a need to sleep between invoking
different R processes ?
Ryszard
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