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Changes between Version 2 and Version 3 of IppDataProductsForWeakLensing


Ignore:
Timestamp:
Nov 12, 2009, 11:03:19 AM (17 years ago)
Author:
dravg.uk.edinburgh
Comment:

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  • IppDataProductsForWeakLensing

    v2 v3  
    4646== Data Storage Requirements ==
    4747
    48     * 1.4e9 pixels
    49     * 10 bytes/pixel
    50     * 0.3 compression factor
    51     * 11 fields (10 MDS + M31)
    52     * ~100 images
     48 * 1.4e9 pixels
     49 * 10 bytes/pixel
     50  * This is the number thrown around, and it comes from either:
     51   * One
     52    * 14 or 15 bits/pixel from ADC.  In either case, requires 2 bytes / pixel / filter
     53    * 5 filters
     54   * Two
     55    * ( 2 bytes [signal] + 2 bytes [weight] + 1 byte [mask ) / filter = 5 bytes / filter
     56    * 2 filters
     57 * 0.3 compression factor ( or 0.44, depending on whose numbers)
     58 * 11 fields (10 MDS + M31)
     59 * ~100 images
    5360
    54 => ~4 TB
     61=> ~4 to 6 TB
    5562
    5663Since it's an approximation, budget for 8 TB