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- From: gjperkins@FNALF.FNAL.GOV (George J Perkins)
- Newsgroups: vmsnet.internals
- Subject: Re: odd XQP behaviour
- Message-ID: <1e9gi4INN6p0@fnnews.fnal.gov>
- Date: 17 Nov 92 01:06:12 GMT
- References: <27A00A05_000735D8.009632ACBE1AF5C0$195_1@UK.AC.KCL.PH.IPG>
- Reply-To: gjperkins@FNALF.FNAL.GOV
- Organization: Fermi National Accelerator Lab
- Lines: 24
- NNTP-Posting-Host: fnalf.fnal.gov
-
- In article <27A00A05_000735D8.009632ACBE1AF5C0$195_1@UK.AC.KCL.PH.IPG>,
- SYSMGR@IPG.PH.KCL.AC.UK (Nigel Arnot) writes:
-
- >I have now found another funny: the same problem in reverse. A user ran
- >a FORTRAN program that generates two output files: the first stays small,
- >the second ends up at around 3000 blocks, both are opened 'NEW' (ie empty)
- >and filled with sequential writes.
- >
- >Recently he noticed that the first file had been allocated with an initial
- >size of 6000+ blocks. This was about two-thirds of his available disk quota,
- >and also would have doomed the job (after a couple of days' crunching) because
- >the second file would have run out of quota to grow into. I gave him more
- >quota to avoid this, and the first file got truncated to about 20 blocks
- >when the job finished. I have never seen anything like this before VMS 5.5.
-
- I have no opinion on the cause of this oddity, but wonder if the addition
- of an explicit "INITIALSIZE=mmm,EXTENDSIZE=nnn" to the Vax Fortran OPEN
- statement for the affected file might override it, reducing the need for a
- quota extension (or at least letting the poor user use the extra space for
- something other than a temporary scratch area). If even this doesn't help,
- the classification definitely becomes more "bug" than "feature".
-
- -----------------------------------------------------------------------
- George J Perkins perkins@msupa.pa.msu.edu gjperkins@fnal.fnal.gov
-