Yes, that's what happening, the instructions aren't being carried out sequentially. It is a multi-core system, but why does this matter? If I run a c program it runs as a single thread, it seems to have something to do with how perl is running the script. I don't know if it will be much help, but here's the explicit code fragment that fails:

bjmsys("xspec - ${tmp}.xcm", $v);

open(DAT, "${tmp}xsfit.dat") || die ("Could not open file!");

my @kT=<DAT>; close DAT;

It dies when it tries to open the file because it hasn't been created yet.

In reply to Re^2: Runing "regular" code with threaded perl by kingskot
in thread Runing "regular" code with threaded perl by kingskot

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