[ncl-talk] readAsciiTable not thread safe

[Daniel.Leuenberger at meteoswiss.ch]

Dear NCL Team,

When running a large number of parallel NCL jobs using the readAsciiTable function (contributed.ncl) I realized that the function is not thread safe, e.g. may fail. The reason is that it writes a temporary ascii file and deletes it again at the end of the function. If now two parallel jobs want to write to the temporary file at exactly the same time, one is not allowed and will crash. One method to circumvent the problem would be to use a random number and/or the process ID in the file name of the temporary file.

Best regards

Daniel Leuenberger

Federal Department of Home Affairs FDHA
Federal Office of Meteorology and Climatology MeteoSwiss

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