Re: sunset downstream sites may feedfrom profhorn.meteor.wisc.edu

Pete,

Thanks for trying our binary and for reporting back on LDM 5.1.2
pqcreate values that worked and the ones that caused bus errors on
SGI/IRIX.  You're the first one to report this bug, and we have now
reproduced it here so we have a chance of fixing it.  The bus error
occurs under the following circumstances:

 - SGI/IRIX 32-bit platform (things seems to work fine on 64-bit IRIX
   platforms when compiled with -64 flag)

 - LDM 5.1.2 (things seem to work with LDM 5.1.2beta3, so this bug was
   introduced late in development)

 - certain values of queue size and number of products, as you have
   reported

The workaround, to try different values of number of products with
"-S" option to pqcreate, will get you going until I can deliver the
real fix.

I'll put some sort of announcement onto the ldm-users mailing list
about this bug and the work-around soon.

Thanks again for your persistence, and sorry we didn't catch this
during testing ...

--Russ

_____________________________________________________________________

Russ Rew                                         UCAR Unidata Program
address@hidden                     http://www.unidata.ucar.edu

> Keywords: 200009252103.e8PL3xb22684
> To: Russ Rew <address@hidden>
> cc: address@hidden
> Subject: Re: sunset downstream sites may feedfrom profhorn.meteor.wisc.edu 
> Date: Mon, 25 Sep 2000 16:03:57 -0500
> From: Pete Pokrandt <address@hidden>
>
> Russ,
>
> I have been playing a bit more with the queue sizes.. It seems
> that you are correct, that only certain values for the number
> of products work.
>
> I have had success with these:
>
> -----
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6101
> (where the default would have been 6103)
>
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6099
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6098
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6097
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6094
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6093
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6089
>
>
> and
> pqcreate -c -q /usr3/ldm/data/ldm.pq -v -s 650000000 -S 158689
> (where the default would have been 158691)
> -----
>
> The following all failed:
>
> Default:
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000
> Creating /cool.pretty/ldm/ldm.pq, 25000000 bytes, 6103 products.
> Bus error (core dumped)
>
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6102
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6100
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6096
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6095
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6092
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6091
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6090
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6088
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6087
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6086
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6085
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6084
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6083
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6082
> pqcreate -c -q /cool.pretty/ldm/ldm.pq -v -s 25000000 -S 6081
>
>
> Pete
>
> --
> +>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+
> ^ Pete Pokrandt                    V 1447  AOSS Bldg  1225 W Dayton St^
> ^ Systems Programmer               V Madison,         WI     53706    ^
> ^                                  V      address@hidden       ^
> ^ Dept of Atmos & Oceanic Sciences V (608) 262-3086 (Phone/voicemail) ^
> ^ University of Wisconsin-Madison  V       262-0166 (Fax)             ^
> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+