[ale] parallel processing
zymana at hra.nyc.gov
Fri Jan 4 16:35:03 EST 2002
Thank You for reply.
Yes, if I specify "&" the job will go in the background. So having a couple
of background jobs is the answer.
But the reason I was asking this is:
1. I don't know how many files the dir has, so I can't (?) specify
"filesA .... fileB shuld be copied by this job "
"filesC .... fileD should be copied by this job "
I was thinking about this situation - cp ./dirA/* ./dirB
The files are big enough to drive me nuts waiting when cp will be done (
each about 5Gb -50GB X 10-15 files in diff. dirs)
2. To copy files, I'm creating the file with locations of these files and
loop to copy each one in a time ( which is not efficient :< )
I can't really apply "&" here because I need to check that all files are
copied before proceeding any farther - this is mean "control point" in this
So I was thinking about smth. else, but not background....
office: 212 849 3543
> -----Original Message-----
> From: jeff hubbs [mailto:hbbs at mediaone.net]
> Sent: Friday, January 04, 2002 3:45 PM
> To: Zyman, Andy
> Cc: 'ale at ale.org'
> Subject: Re: [ale] parallel processing
> Andy -
> You can execute each cp command with an ampersand ("&") at the end
> (that's sometimes called "amping off") but unless the files/dirs are
> really big, the cps will finish before you can type the next one - is
> that what you're talking about?
> - Jeff
> Zyman, Andy wrote:
> > Hello,
> > I just wonder :
> > Let's say in Oracle we have parallel SQL processing - I can
> specify that
> > certain SQL should be processed in parallel.
> > What about Unix? Let's say I have a directory on Sun
> server with 10 files.
> > I want to cp them to the diff. one. I'm doing cp xxx yyy.
> Now how it will
> > processed and who I can see that it will be done in parallel?
> > Thank You
> > Andy
> > ---
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