"If I understand you correctly, you have a list of 500 data sets, where each set comprises 1 to 7 matrices of 1K x 1K values (bytes? ints?); your test run of 13 "observation numbers" yielded 51 query executions, so maybe there was an average of about 3 matrices per observation? (13 queries to get the lists of detectors per observation, plus 13 * 3 queries to get the matrices for three detectors, would come to 52 queries -- am I on the right track here?)"
Sortakinda. The main diff is that each chip/matrix/CCD might only have a few 'hits' on it. So what my two DB queries do is:
- for each observation number in the list, return the chips/CCDs that actually have hits;
- for each chip/CCD involved in that observation number, return the x and y value of each hit on the chip/CCD.
Hope that makes more sense. The crunching that follows iterates over the result sets ... but is decoupled from the DB calls.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
|
|
